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Your search keyword '"STEEL, MICHAEL"' showing total 23 results
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23 results on '"STEEL, MICHAEL"'

1. Molecular optomechanics with atomic antennas

Author

Schmidt, Mikolaj K., High, Alexander A., and Steel, Michael J.

Subjects
Quantum Physics
Abstract

A typical surface-enhanced Raman scattering (SERS) system relies on deeply subwavelength field localization in nanoscale plasmonic cavities to enhance both the excitation and emission of Raman active molecules. Here, we demonstrate that a germanium-vacancy (GeV) defect in diamond can efficiently mediate the excitation process, by acting as a bright atomic antenna. At low temperatures, GeV exhibits low dissipation, allowing it to be efficiently populated by the incident field, resulting in a thousand-fold increase in the efficiency of Raman scattering. Additionally, we show that atomic antenna-enhanced Raman scattering can be distinguished from conventional SERS by tracing the dependence of Stokes intensity on input power, and the pronounced antibunching of the Raman emission.

Published
2024

2. Generation of polarization-entangled counter-propagating photons with high orbital angular momentum

Author

Wagner, Elisabeth, Schmidt, Mikolaj K., Steel, Michael J., and Sharapova, Polina R.

Subjects
Quantum Physics
Abstract

Spin and orbital angular momenta of light are attractive resources to harness for encoding, and manipulating information, with applications in various quantum photonic technologies. However, to fully harness that potential, we require robust sources of high-order angular momentum photons exhibiting nonclassical correlations. Here we propose a fiber-based source of polarization-entangled photons in high-order orbital angular momentum (OAM) modes. In our setup the pairs or photons are generated in a cylindrical fiber through a four-wave mixing process, which induces polarization, or spin entanglement. The photons are then converted to modes exhibiting large OAM by the two helical gratings inscribed in the core of the fiber. We present a complete theoretical framework used to consistently describe this process, and demonstrate a robust control over the joint spectral amplitude of the generated photons.

Published
2024

3. Quasi-solitons and stable superluminal opto-acoustic pulses in Brillouin scattering

Author

Runge, Antoine F. J., Schmidt, Mikołaj K., Solntsev, Alexander S., Steel, Michael J., and Poulton, Christopher G.

Subjects
Physics - Optics, Nonlinear Sciences - Pattern Formation and Solitons
Abstract

We theoretically and numerically study the evolution of soliton-like waves supported by stimulated Brillouin scattering. First, the emergence and unusual behaviour of resonant solitary waves are investigated for both backward and forward three wave interactions. We find that these waves can be characterized by the ratio between the optical and acoustic damping coefficients. We also examine a second class of non-resonant anti-symmetric soliton-like waves, which have a more complicated pulse shape than traditional solitons. These waves are superluminal, with pulse velocities that can be tuned by the input Stokes and pump fields. We discuss the excitation of these types of waves and the physical conditions required for their observation., Comment: 9 pages, 7 figures

Published
2024

4. Anti-resonant reflecting acoustic rib waveguides for strong opto-acoustic interaction

Author

Dinter, Thomas, Schmidt, Mikołaj K., and Steel, Michael J.

Subjects
Physics - Optics
Abstract

Few known material systems can simultaneously guide optical and elastic fields through total internal reflection. This natural limit has restricted the realization of strong optoacoustic effects to highly-specialised and purpose-built platforms which employ either exotic materials, or complex waveguide designs. Here we apply the concept of Anti-Resonant Reflecting Acoustic Waveguides (ARRAWs) as a potential solution to this issue. ARRAWs confine the elastic field to a high-elastic-velocity core via the anti-resonances of a cladding layer of lower elastic velocity. We numerically study the appearance and dispersion of ARRAW-guided modes in a conventional silicon-on-insulator rib waveguide geometry. Applying the technique to the problem of efficient backwards Stimulated Brillouin Scattering (SBS), we predict that ARRAW guidance, in conjunction with conventional optical confinement, can produce Brillouin gains comparable to those of more exotic geometries., Comment: 9 pages, 7 figures

Published
2024

7. Brillouin light storage for 100 pulse widths

Author

Stiller, Birgit, Jaksch, Kevin, Piotrowski, Johannes, Merklein, Moritz, Schmidt, Mikolaj K., Vu, Khu, Ma, Pan, Madden, Stephen, Steel, Michael J., Poulton, Christopher G., and Eggleton, Benjamin J.

Subjects
Physics - Optics, Quantum Physics
Abstract

Signal processing based on stimulated Brillouin scattering (SBS) is limited by the narrow linewidth of the optoacoustic response, which confines many Brillouin applications to continuous wave signals or optical pulses longer than several nanoseconds. In this work, we experimentally demonstrate Brillouin interactions at the 150 ps time scale and a delay for a record 15 ns which corresponds to a delay of 100 pulse widths. This breakthrough experimental result was enabled by the high local gain of the chalcogenide waveguides as the optoacoustic interaction length reduces with pulse width. We successfully transfer 150ps-long pulses to traveling acoustic waves within a Brillouin-based memory setup. The information encoded in the optical pulses is stored for 15 ns in the acoustic field. We show the retrieval of eight amplitude levels, multiple consecutive pulses and low distortion in pulse shape. The extension of Brillouin-based storage to the ultra-short pulse regime is an important step for the realisation of practical Brillouin-based delay lines and other optical processing applications., Comment: 6 pages, 6 figures

Published
2023

8. Molecular optomechanics in the anharmonic regime: from nonclassical mechanical states to mechanical lasing

Author

Schmidt, Mikołaj K. and Steel, Michael J.

Subjects
Quantum Physics, Physics - Optics
Abstract

Cavity optomechanics aims to establish optical control over vibrations of mechanical systems, to heat, cool or to drive them toward coherent, or nonclassical states. This field was recently extended to include molecular optomechanics, which describes the dynamics of THz molecular vibrations coupled to the optical fields of lossy cavities via Raman transitions, and was developed to understand the anomalous amplification of optical phonons in Surface-Enhanced Raman Scattering experiments. But the molecular platform should prove suitable for demonstrating more sophisticated optomechanical effects, including engineering of nonclassical mechanical states, or inducing coherent molecular vibrations. In this work, we propose two pathways towards implementing these effects, enabled or revealed by the strong intrinsic anharmonicities of molecular vibrations. First, to prepare a nonclassical mechanical state, we propose an incoherent analogue of the mechanical blockade, in which the molecular aharmonicity and optical response of hybrid cavities isolate the two lowest-energy vibrational states. Secondly, we show that for a strongly driven optomechanical system, the anharmonicity can effectively suppress the mechanical amplification, shifting and reshaping the onset of coherent mechanical oscillations. Our estimates indicate that both effects should be within reach of the existing implementations of the Surface Enhanced Raman Scattering, opening the pathway towards the coherent and nonclassical effects in molecular optomechanics.

Published
2023

9. Optimizing performance for on-chip SBS-based isolator

Author

Lai, Choon Kong, Merklein, Moritz, Bedoya, Alvaro Casas, Liu, Yang, Madden, Stephen J., Poulton, Christopher G., Steel, Michael J., and Eggleton, Benjamin J.

Subjects
Physics - Optics
Abstract

Non-reciprocal optical components such as isolators and circulators are crucial for preventing catastrophic back-reflection and controlling optical crosstalk in photonic systems. While non-reciprocal devices based on Brillouin intermodal transitions have been experimentally demonstrated in chip-scale platforms, harnessing such interactions has required a suspended waveguide structure, which is challenging to fabricate and is potentially less robust than a non-suspended structure, thereby limiting the design flexibility. In this paper, we numerically investigate the performance of a Brillouin-based isolation scheme in which a dual-pump-driven optoacoustic interaction is used to excite confined acoustic waves in a traditional ridge waveguide. We find that acoustic confinement, and therefore the amount of Brillouin-driven mode conversion, can be enhanced by selecting an appropriate optical mode pair and waveguide geometry of two arsenic based chalcogenide platforms. Further, we optimize the isolator design in its entirety, including the input couplers, mode filters, the Brillouin-active waveguide as well as the device fabrication tolerances. We predict such a device can achieve 30 dB isolation over a 38 nm bandwidth when 500 mW pump power is used; in the presence of a +/- 10 nm fabrication-induced width error, such isolation can be maintained over a 5-10 nm bandwidth.

Published
2022

10. Identifying unbound strong bunching and the breakdown of the Rotating Wave Approximation in the quantum Rabi model

Author

Nodar, Álvaro, Esteban, Ruben, Muniain, Unai, Steel, Michael J., Aizpurua, Javier, and Schmidt, Mikołaj K.

Subjects
Quantum Physics, Physics - Optics
Abstract

We use a recently derived gauge-invariant formulation of the problem of a two-level system coupled to an optical cavity, to explore the transition between the weak, and the ultra-strong coupling regimes of light-matter interaction. We explore this transition using the intensity correlations $g^{(2)}(\tau)$ of the emitted light, and find strong, unbounded bunching of the emission from systems governed by the Rabi Hamiltonian. Surprisingly, this effect is observed not only in the ultra-strong coupling regime, but also for weakly coupled systems, where the Jaynes-Cummings Hamiltonian would predict the opposite, antibunched emission. This suggests that the higher-order correlations are a particularly sensitive probe of the divergence between the Jaynes-Cummings and Rabi Hamiltonians, and can serve as an indicator of the breakdown of the rotating wave approximation. Our findings indicate also that the boundary between the weakly, strongly, and ultra-strongly coupled dynamics, is much richer than currently accepted.

Published
2022

11. IMPACT-Global Hip Fracture Audit: Nosocomial infection, risk prediction and prognostication, minimum reporting standards and global collaborative audit: Lessons from an international multicentre study of 7,090 patients conducted in 14 nations during the COVID-19 pandemic

Author

Abdul-Jabar, Hani, Abu-Rajab, Rashid, Abugarja, Ahmed, Adam, Karen, Aguado Hernández, Héctor J., Améstica Lazcano, Gedeón, Anderson, Sarah, Ansar, Mahmood, Antrobus, Jonathan, Aragón Achig, Esteban Javier, Archunan, Maheswaran, Arrieta Salinas, Mirentxu, Ashford–Wilson, Sarah, Assens Gibert, Cristina, Athanasopoulou, Katerina, Awadelkarim, Mohamed, Baird, Stuart, Bajada, Stefan, Balakrishnan, Shobana, Balasubramanian, Sathishkumar, Ballantyne, James A., Bárcena Goitiandia, Leopoldo, Barkham, Benjamin, Barmpagianni, Christina, Barres-Carsi, Mariano, Barrett, Sarah, Baskaran, Dinnish, Bell, Jean, Bell, Katrina, Bell, Stuart, Bellelli, Giuseppe, Benchimol, Javier Alberto, Boietti, Bruno Rafael, Boswell, Sally, Braile, Adriano, Brennan, Caitlin, Brent, Louise, Brooke, Ben, Bruno, Gaetano, Burahee, Abdus, Burns, Shirley, Calabrò, Giampiero, Campbell, Lucy, Carabelli, Guido Sebastian, Carnegie, Carol, Carretero Cristobal, Guillermo, Caruana, Ethan, Cassinello Ogea, M.a Concepción, Castellanos Robles, Juan, Castillon, Pablo, Chakrabarti, Anil, Cecere, Antonio Benedetto, Chen, Ping, Clarke, Jon V., Collins, Grace, Corrales Cardenal, Jorge E., Corsi, Maurizio, Cózar Adelantado, Gara María, Craxford, Simon, Crooks, Melissa, Cuarental-García, Javier, Cuthbert, Rory, Dall, Graham, Daskalakis, Ioannis, De Cicco, Annalisa, de la Fuente de Dios, Diana, Demaria, Pablo, Dereix, John, Díaz Jiménez, Julian, Dinamarca Montecinos, José Luis, Do Le, Ha Phuong, Donoso Coppa, Juan Pablo, Drosos, Georgios, Duffy, Andrew, East, Jamie, Eastwood, Deborah, Elbahari, Hassan, Elias de Molins Peña, Carmen, Elmamoun, Mamoun, Emmerson, Ben, Escobar Sánchez, Daniel, Faimali, Martina, Farré-Mercadé, Maria Victòria, Farrow, Luke, Fayez, Almari, Fell, Adam, Fenner, Christopher, Ferguson, David, Finlayson, Louise, Flores Gómez, Aldo, Freeman, Nicholas, French, Jonathan, Gabardo Calvo, Santiago, Gagliardo, Nicola, Garcia Albiñana, Joan, García Cruz, Guillermo, García de Cortázar Antolín, Unai, García Virto, Virginia, Gealy, Sophie, Gil Caballero, Sandra Marcela, Gill, Moneet, González González, María Soledad, Gopireddy, Rajesh, Guntley, Diane, Gurung, Binay, Guzmán Rosales, Guadalupe, Haddad, Nedaa, Hafeez, Mahum, Haller, Petra, Halligan, Emer, Hardie, John, Hawker, Imogen, Helal, Amr, Herrera Cruz, Mariana, Herreros Ruiz-Valdepeñas, Ruben, Horton, James, Howells, Sean, Howieson, Alan, Hughes, Luke, Hünicken Torrez, Flavia Lorena, Hurtado Ortega, Ana, Huxley, Peter, Hamid, Hytham K.S., Ilahi, Nida, Iliadis, Alexis, Inman, Dominic, Jadhao, Piyush, Jandoo, Rajan, Jawad, Lucy, Jayatilaka, Malwattage Lara Tania, Jenkins, Paul J., Jeyapalan, Rathan, Johnson, David, Johnston, Andrew, Joseph, Sarah, Kapoor, Siddhant, Karagiannidis, Georgios, Karanam, Krishna Saga, Kattakayam, Freddy, Konarski, Alastair, Kontakis, Georgios, Labrador Hernández, Gregorio, Lancaster, Victoria, Landi, Giovanni, Le, Brian, Liew, Ignatius, Logishetty, Kartik, Lopez Marquez, Andrew Carlomaria Daniel, Lopez, Judit, Lum, Joann, Macpherson, Gavin J., Madan, Suvira, Mahroof, Sabreena, Malik-Tabassum, Khalid, Mallina, Ravi, Maqsood, Afnan, Marson, Ben, Martin Legorburo, M. José, Martin-Perez, Encarna, Martínez Jiménez, Tania, Martinez Martin, Javier, Mayne, Alistair, Mayor, Amy, McAlinden, Gavan, McLean, Lucille, McDonald, Lorna, McIntyre, Joshua, McKay, Pamela, McKean, Greg, McShane, Heather, Medici, Antonio, Meeke, Chelsea, Meldrum, Evonne, Mendez, Mijail, Mercer, Scott, Merino Perez, Josu, Mesa-Lampré, María-Pilar, Mighton, Shuna, Milne, Kirsty, Mohamed Yaseen, Muhammed, Moppett, Iain, Mora, Jesus, Morales-Zumel, Sira, Moreno Fenoll, Irene Blanca, Mousa, Adham, Murray, Alastair W., Murray, Elspeth V., Nair, Radhika, Neary, Fiona, Negri, Giacomo, Negus, Oliver, Newham-Harvey, Fiona, Ng, Nigel, Nightingale, Jess, Noor Mohamed Anver, Sumiya, Nunag, Perrico, O'Hare, Matthew, Ollivere, Ben, Ortés Gómez, Raquel, Owens, AnneMarie, Page, Siobhan, Palloni, Valentina, Panagiotopoulos, Andreas, Panagiotopoulos, Elias, Panesar, Paul, Papadopoulos, Antonios, Spyridon, Papagiannis, Pareja Sierra, Teresa, Park, Chang, Parwaiz, Hammad, Paterson-Byrne, Paul, Patton, Sam, Pearce, Jack, Porter, Marina, Pellegrino, Achille, Pèrez Cuellar, Arturo, Pezzella, Raffaele, Phadnis, Ashish, Pinder, Charlotte, Piper, Danielle, Powell-Bowns, Matilda, Prieto Martín, Rocío, Probert, Annabel, Ramesh, Ashwanth, Ramírez de Arellano, Manuel Vicente Mejía, Renton, Duncan, Rickman, Stephen, Robertson, Alastair, Roche Albero, Adrian, Rodrigo Verguizas, José Alberto, Rodríguez Couso, Myriam, Rooney, Joanna, Sáez-López, Pilar, Saldaña-Díaz, Andres, Santulli, Adriano, Sanz Pérez, Marta Isabel, Sarraf, Khaled M., Scarsbrook, Christine, Scott, Chloe E.H., Scott, Jennifer, Shah, Sachi, Sharaf, Sharief, Sharma, Sidharth, Shirley, Denise, Siano, Antonio, Simpson, James, Singh, Abhinav, Singh, Amit, Sinnett, Tim, Sisodia, Gurudatt, Smith, Philomena, Sophena Bert, Eugenia, Steel, Michael, Stewart, Avril, Stewart, Claire, Sugand, Kapil, Sullivan, Niall, Sweeting, Lauren, Symes, Michael, Tan, Dylan Jun Hao, Tancredi, Francesco, Tatani, Irini, Thomas, Philip, Thomson, Fraser, Toner, Niamh S., Tong, Anna, Toro, Antonio, Tosounidis, Theodoros, Tottas, Stylianos, Trinidad Leo, Andrea, Tucker, Damien, Vemulapalli, Krishna, Ventura Garces, Diego, Vernon, Olivia Katherine, Viveros Garcia, Juan Carlos, Ward, Alex, Ward, Kirsty, Watson, Kate, Weerasuriya, Thisara, Wickramanayake, Udara, Wilkinson, Hannah, Windley, Joseph, Wood, Janet, Wynell-Mayow, William, Zatti, Giovanni, Zeiton, Moez, Zurrón Lobato, Miriam, Hall, Andrew J., Clement, Nicholas D., Ojeda-Thies, Cristina, MacLullich, Alasdair MJ., Toro, Giuseppe, Johansen, Antony, White, Tim O., and Duckworth, Andrew D.

Published
2022
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12. Anti-resonant reflecting acoustic rib waveguides for strong opto-acoustic interaction.

Author

Dinter, Thomas J., Schmidt, Mikołaj K., and Steel, Michael J.

Subjects
ACOUSTIC waveguides, PHOTOACOUSTIC effect, BRILLOUIN scattering, VELOCITY, GEOMETRY
Abstract

Few known material systems can simultaneously guide optical and elastic fields through total internal reflection. This natural limit has restricted the realization of strong optoacoustic effects to highly specialized and purpose-built platforms, which employ either exotic materials or complex waveguide designs. Here, we apply the concept of Anti-Resonant Reflecting Acoustic Waveguides (ARRAWs) as a potential solution to this issue. ARRAWs confine the elastic field to a high-elastic-velocity core via the anti-resonances of a cladding layer of lower elastic velocity. We numerically study the appearance and dispersion of ARRAW-guided modes in a conventional silicon-on-insulator rib waveguide geometry. Applying the technique to the problem of efficient backward stimulated Brillouin scattering, we predict that ARRAW guidance, in conjunction with conventional optical confinement, can produce Brillouin gains comparable with those of more exotic geometries. [ABSTRACT FROM AUTHOR]

Published
2024
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14. Brillouin light storage for 100 pulse widths

Author

Stiller, Birgit, primary, Jaksch, Kevin, additional, Piotrowski, Johannes, additional, Merklein, Moritz, additional, Schmidt, Mikolaj K., additional, Vu, Khu, additional, Ma, Pan, additional, Madden, Stephen, additional, Steel, Michael, additional, Poulton, Christopher G., additional, and Eggleton, Benjamin, additional

Published
2023
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18. IMPACT-Global Hip Fracture Audit: Nosocomial infection, risk prediction and prognostication, minimum reporting standards and global collaborative audit

Author

Hall, Andrew J., primary, Clement, Nicholas D., additional, Ojeda-Thies, Cristina, additional, MacLullich, Alasdair MJ., additional, Toro, Giuseppe, additional, Johansen, Antony, additional, White, Tim O., additional, Duckworth, Andrew D., additional, Abdul-Jabar, Hani, additional, Abu-Rajab, Rashid, additional, Abugarja, Ahmed, additional, Adam, Karen, additional, Aguado Hernández, Héctor J., additional, Améstica Lazcano, Gedeón, additional, Anderson, Sarah, additional, Ansar, Mahmood, additional, Antrobus, Jonathan, additional, Aragón Achig, Esteban Javier, additional, Archunan, Maheswaran, additional, Arrieta Salinas, Mirentxu, additional, Ashford–Wilson, Sarah, additional, Assens Gibert, Cristina, additional, Athanasopoulou, Katerina, additional, Awadelkarim, Mohamed, additional, Baird, Stuart, additional, Bajada, Stefan, additional, Balakrishnan, Shobana, additional, Balasubramanian, Sathishkumar, additional, Ballantyne, James A., additional, Bárcena Goitiandia, Leopoldo, additional, Barkham, Benjamin, additional, Barmpagianni, Christina, additional, Barres-Carsi, Mariano, additional, Barrett, Sarah, additional, Baskaran, Dinnish, additional, Bell, Jean, additional, Bell, Katrina, additional, Bell, Stuart, additional, Bellelli, Giuseppe, additional, Benchimol, Javier Alberto, additional, Boietti, Bruno Rafael, additional, Boswell, Sally, additional, Braile, Adriano, additional, Brennan, Caitlin, additional, Brent, Louise, additional, Brooke, Ben, additional, Bruno, Gaetano, additional, Burahee, Abdus, additional, Burns, Shirley, additional, Calabrò, Giampiero, additional, Campbell, Lucy, additional, Carabelli, Guido Sebastian, additional, Carnegie, Carol, additional, Carretero Cristobal, Guillermo, additional, Caruana, Ethan, additional, Cassinello Ogea, M.a Concepción, additional, Castellanos Robles, Juan, additional, Castillon, Pablo, additional, Chakrabarti, Anil, additional, Cecere, Antonio Benedetto, additional, Chen, Ping, additional, Clarke, Jon V., additional, Collins, Grace, additional, Corrales Cardenal, Jorge E., additional, Corsi, Maurizio, additional, Cózar Adelantado, Gara María, additional, Craxford, Simon, additional, Crooks, Melissa, additional, Cuarental-García, Javier, additional, Cuthbert, Rory, additional, Dall, Graham, additional, Daskalakis, Ioannis, additional, De Cicco, Annalisa, additional, de la Fuente de Dios, Diana, additional, Demaria, Pablo, additional, Dereix, John, additional, Díaz Jiménez, Julian, additional, Dinamarca Montecinos, José Luis, additional, Do Le, Ha Phuong, additional, Donoso Coppa, Juan Pablo, additional, Drosos, Georgios, additional, Duffy, Andrew, additional, East, Jamie, additional, Eastwood, Deborah, additional, Elbahari, Hassan, additional, Elias de Molins Peña, Carmen, additional, Elmamoun, Mamoun, additional, Emmerson, Ben, additional, Escobar Sánchez, Daniel, additional, Faimali, Martina, additional, Farré-Mercadé, Maria Victòria, additional, Farrow, Luke, additional, Fayez, Almari, additional, Fell, Adam, additional, Fenner, Christopher, additional, Ferguson, David, additional, Finlayson, Louise, additional, Flores Gómez, Aldo, additional, Freeman, Nicholas, additional, French, Jonathan, additional, Gabardo Calvo, Santiago, additional, Gagliardo, Nicola, additional, Garcia Albiñana, Joan, additional, García Cruz, Guillermo, additional, García de Cortázar Antolín, Unai, additional, García Virto, Virginia, additional, Gealy, Sophie, additional, Gil Caballero, Sandra Marcela, additional, Gill, Moneet, additional, González González, María Soledad, additional, Gopireddy, Rajesh, additional, Guntley, Diane, additional, Gurung, Binay, additional, Guzmán Rosales, Guadalupe, additional, Haddad, Nedaa, additional, Hafeez, Mahum, additional, Haller, Petra, additional, Halligan, Emer, additional, Hardie, John, additional, Hawker, Imogen, additional, Helal, Amr, additional, Herrera Cruz, Mariana, additional, Herreros Ruiz-Valdepeñas, Ruben, additional, Horton, James, additional, Howells, Sean, additional, Howieson, Alan, additional, Hughes, Luke, additional, Hünicken Torrez, Flavia Lorena, additional, Hurtado Ortega, Ana, additional, Huxley, Peter, additional, Hamid, Hytham K.S., additional, Ilahi, Nida, additional, Iliadis, Alexis, additional, Inman, Dominic, additional, Jadhao, Piyush, additional, Jandoo, Rajan, additional, Jawad, Lucy, additional, Jayatilaka, Malwattage Lara Tania, additional, Jenkins, Paul J., additional, Jeyapalan, Rathan, additional, Johnson, David, additional, Johnston, Andrew, additional, Joseph, Sarah, additional, Kapoor, Siddhant, additional, Karagiannidis, Georgios, additional, Karanam, Krishna Saga, additional, Kattakayam, Freddy, additional, Konarski, Alastair, additional, Kontakis, Georgios, additional, Labrador Hernández, Gregorio, additional, Lancaster, Victoria, additional, Landi, Giovanni, additional, Le, Brian, additional, Liew, Ignatius, additional, Logishetty, Kartik, additional, Lopez Marquez, Andrew Carlomaria Daniel, additional, Lopez, Judit, additional, Lum, Joann, additional, Macpherson, Gavin J., additional, Madan, Suvira, additional, Mahroof, Sabreena, additional, Malik-Tabassum, Khalid, additional, Mallina, Ravi, additional, Maqsood, Afnan, additional, Marson, Ben, additional, Martin Legorburo, M. José, additional, Martin-Perez, Encarna, additional, Martínez Jiménez, Tania, additional, Martinez Martin, Javier, additional, Mayne, Alistair, additional, Mayor, Amy, additional, McAlinden, Gavan, additional, McLean, Lucille, additional, McDonald, Lorna, additional, McIntyre, Joshua, additional, McKay, Pamela, additional, McKean, Greg, additional, McShane, Heather, additional, Medici, Antonio, additional, Meeke, Chelsea, additional, Meldrum, Evonne, additional, Mendez, Mijail, additional, Mercer, Scott, additional, Merino Perez, Josu, additional, Mesa-Lampré, María-Pilar, additional, Mighton, Shuna, additional, Milne, Kirsty, additional, Mohamed Yaseen, Muhammed, additional, Moppett, Iain, additional, Mora, Jesus, additional, Morales-Zumel, Sira, additional, Moreno Fenoll, Irene Blanca, additional, Mousa, Adham, additional, Murray, Alastair W., additional, Murray, Elspeth V., additional, Nair, Radhika, additional, Neary, Fiona, additional, Negri, Giacomo, additional, Negus, Oliver, additional, Newham-Harvey, Fiona, additional, Ng, Nigel, additional, Nightingale, Jess, additional, Noor Mohamed Anver, Sumiya, additional, Nunag, Perrico, additional, O'Hare, Matthew, additional, Ollivere, Ben, additional, Ortés Gómez, Raquel, additional, Owens, AnneMarie, additional, Page, Siobhan, additional, Palloni, Valentina, additional, Panagiotopoulos, Andreas, additional, Panagiotopoulos, Elias, additional, Panesar, Paul, additional, Papadopoulos, Antonios, additional, Spyridon, Papagiannis, additional, Pareja Sierra, Teresa, additional, Park, Chang, additional, Parwaiz, Hammad, additional, Paterson-Byrne, Paul, additional, Patton, Sam, additional, Pearce, Jack, additional, Porter, Marina, additional, Pellegrino, Achille, additional, Pèrez Cuellar, Arturo, additional, Pezzella, Raffaele, additional, Phadnis, Ashish, additional, Pinder, Charlotte, additional, Piper, Danielle, additional, Powell-Bowns, Matilda, additional, Prieto Martín, Rocío, additional, Probert, Annabel, additional, Ramesh, Ashwanth, additional, Ramírez de Arellano, Manuel Vicente Mejía, additional, Renton, Duncan, additional, Rickman, Stephen, additional, Robertson, Alastair, additional, Roche Albero, Adrian, additional, Rodrigo Verguizas, José Alberto, additional, Rodríguez Couso, Myriam, additional, Rooney, Joanna, additional, Sáez-López, Pilar, additional, Saldaña-Díaz, Andres, additional, Santulli, Adriano, additional, Sanz Pérez, Marta Isabel, additional, Sarraf, Khaled M., additional, Scarsbrook, Christine, additional, Scott, Chloe E.H., additional, Scott, Jennifer, additional, Shah, Sachi, additional, Sharaf, Sharief, additional, Sharma, Sidharth, additional, Shirley, Denise, additional, Siano, Antonio, additional, Simpson, James, additional, Singh, Abhinav, additional, Singh, Amit, additional, Sinnett, Tim, additional, Sisodia, Gurudatt, additional, Smith, Philomena, additional, Sophena Bert, Eugenia, additional, Steel, Michael, additional, Stewart, Avril, additional, Stewart, Claire, additional, Sugand, Kapil, additional, Sullivan, Niall, additional, Sweeting, Lauren, additional, Symes, Michael, additional, Tan, Dylan Jun Hao, additional, Tancredi, Francesco, additional, Tatani, Irini, additional, Thomas, Philip, additional, Thomson, Fraser, additional, Toner, Niamh S., additional, Tong, Anna, additional, Toro, Antonio, additional, Tosounidis, Theodoros, additional, Tottas, Stylianos, additional, Trinidad Leo, Andrea, additional, Tucker, Damien, additional, Vemulapalli, Krishna, additional, Ventura Garces, Diego, additional, Vernon, Olivia Katherine, additional, Viveros Garcia, Juan Carlos, additional, Ward, Alex, additional, Ward, Kirsty, additional, Watson, Kate, additional, Weerasuriya, Thisara, additional, Wickramanayake, Udara, additional, Wilkinson, Hannah, additional, Windley, Joseph, additional, Wood, Janet, additional, Wynell-Mayow, William, additional, Zatti, Giovanni, additional, Zeiton, Moez, additional, and Zurrón Lobato, Miriam, additional

Published
2022
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20. Mo1515: THE TRANSCRIPTOMIC PROFILE OF THE NON-INFLAMED ILEUM IN CROHN’S DISEASE DIFFERS COMPARED TO THAT OF HEALTH CONTROLS

Author

Lozano, Helena Martinez, primary, Nayeri, Shadi, additional, Borowski, Krzysztof, additional, Olivera, Pablo A., additional, Steel, Michael J., additional, Leibovitzh, Haim, additional, Lee, Sun-Ho, additional, Hernandez-Rocha, Cristian, additional, Conner, James, additional, Stempak, Joanne M., additional, and Silverberg, Mark S., additional

Published
2022
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21. Tu1492: ILEAL MICROBIOME REMAINS LESS DIVERSE IN ENDOSCOPICALLY AND HISTOLOGICALLY INACTIVE CROHN'S DISEASE COMPARED TO ULCERATIVE COLITIS OR HEALTHY CONTROLS

Author

Olivera, Pablo A., primary, Leibovitzh, Haim, additional, Lee, Sun-Ho, additional, Borowski, Krzysztof, additional, Steel, Michael J., additional, Lozano, Helena Martinez, additional, Nayeri, Shadi, additional, Hernandez-Rocha, Cristian, additional, Stempak, Joanne M., additional, Conner, James, additional, and Silverberg, Mark S., additional

Published
2022
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22. Quantitative morphology of femtosecond laser-written point-by-point optical fiber Bragg gratings

Author

Bhardwaj, Saurabh, Fernandez, Toney Teddy, Gross, Simon, Withford, Michael J., and Steel, Michael J.

Abstract

We investigate the morphology of femtosecond laser, single pulse-inscribed, point-by-point (PbP) fiber Bragg gratings. Direct measurement of a PbP grating’s refractive index profile was carried out with micro-reflectivity analysis. PbP gratings were imaged at sub-micrometer scale with scanning electron microscopy, Raman and photoluminescence studies were performed to probe the structural and electronic changes. Comparison of results from different characterisation techniques suggests that the creation of an increased refractive index region around the micro-void is due to contributions from both densification and the formation of highly polarizable non-bridging oxygen bonds.

Published
2022

23. Diffusive light pipes

Author

Steel, Michael J.

Abstract

Optical waveguides that route light are a core technology of modern photonics and the bedrock of the global communications network. A surprising diffusion mechanism for guiding light has now been identified, and it is strangely close to home.

Published
2024
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