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15 results on '"Ali Serpenguzel"'

1. Laser-Inscribed Diamond Waveguide Resonantly Coupled to Diamond Microsphere

Author

Nurperi Yavuz, Mustafa Mert Bayer, Hüseyin Ozan Ҫirkinoğlu, Ali Serpengüzel, Thien Le Phu, Argyro Giakoumaki, Vibhav Bharadwaj, Roberta Ramponi, and Shane M. Eaton

Subjects
microcavities, optical resonators, waveguides, laser material processing, fiber optics, infrared, Organic chemistry, QD241-441
Abstract

An all-diamond photonic circuit was implemented by integrating a diamond microsphere with a femtosecond-laser-written bulk diamond waveguide. The near surface waveguide was fabricated by exploiting the Type II fabrication method to achieve stress-induced waveguiding. Transverse electrically and transverse magnetically polarized light from a tunable laser operating in the near-infrared region was injected into the diamond waveguide, which when coupled to the diamond microsphere showed whispering-gallery modes with a spacing of 0.33 nm and high-quality factors of 105. By carefully engineering these high-quality factor resonances, and further exploiting the properties of existing nitrogen-vacancy centers in diamond microspheres and diamond waveguides in such configurations, it should be possible to realize filtering, sensing and nonlinear optical applications in integrated diamond photonics.

Published
2020
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2. Visible to Infrared Diamond Photonics Enabled by Focused Femtosecond Laser Pulses

Author

Belén Sotillo, Vibhav Bharadwaj, John Patrick Hadden, Stefano Rampini, Andrea Chiappini, Toney T. Fernandez, Cristina Armellini, Ali Serpengüzel, Maurizio Ferrari, Paul E. Barclay, Roberta Ramponi, and Shane M. Eaton

Subjects
diamond, nitrogen-vacancy (NV) center, femtosecond laser, laser micromachining, optical waveguide, magnetometry, Mechanical engineering and machinery, TJ1-1570
Abstract

Diamond’s nitrogen-vacancy (NV) centers show great promise in sensing applications and quantum computing due to their long electron spin coherence time and because they can be found, manipulated, and read out optically. An important step forward for diamond photonics would be connecting multiple diamond NVs together using optical waveguides. However, the inertness of diamond is a significant hurdle for the fabrication of integrated optics similar to those that revolutionized silicon photonics. In this work, we show the fabrication of optical waveguides in diamond, enabled by focused femtosecond high repetition rate laser pulses. By optimizing the geometry of the waveguide, we obtain single mode waveguides from the visible to the infrared. Additionally, we show the laser writing of individual NV centers within the bulk of diamond. We use µ-Raman spectroscopy to gain better insight on the stress and the refractive index profile of the optical waveguides. Using optically detected magnetic resonance and confocal photoluminescence characterization, high quality NV properties are observed in waveguides formed in various grades of diamond, making them promising for applications such as magnetometry, quantum information systems, and evanescent field sensors.

Published
2017
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3. Editor-in-Chief

Author

Derek Abbott, Sonia Aissa, Anuradha Annaswamy, Nirwan Ansari, Jun Cai, Kun-Shan Chen, Yixin Chen, J.-C. Chiao, Ayman El-Baz, Shaikh Fattah, Hoay Gooi, Maya Gokhale, Chih-Lin I, Giuseppe Iannaccone, Yumi Iwashita, Bruce Jacob, Abbas Jamalipour, Bahram Javidi, Weihua Jiang, Okyay Kaynak, Hulya Kirkici, Germano Lambert-Torres, Shengtao Li, Michal Mrozowski, Michele Nappi, Dalma Novak, Hugo Proenca, Yi Qian, Zhihua Qu, Susanto Rahardja, Mehrdad Saif, Ali Serpenguzel, Peter H. Siegel, Ashitey Trebi-Ollennu, Daniela Tuninetti, Ge Wang, Keith A. Wear, Andreas Weisshaar, C. Patrick Yue, and Enrico Zio

Subjects
Electrical engineering. Electronics. Nuclear engineering, TK1-9971
Published
2024
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4. IEEE Access™ Editorial Board

Author

Ram Adapa, Anuradha Annaswamy, Nirwan Ansari, Jun Cai, Jose Capmany, Kun-Shan Chen, J.-C. Chiao, M. Jamal Deen, John W. Evans, Shaikh Fattah, Aura Ganz, Amitava Ghosh, Dmitry Goldgof, Josep M. Guerrero, Melinda Hodkiewicz, Abbas Jamalipour, Weihua Jiang, Lina Karam, Okyay Kaynak, Joy Laskar, Gianluca Lazzi, Victor C. M. Leung, Shengtao Li, Qilian Liang, Jian-Yu Lu, Leda Lunardi, Michael Pecht, Mugen Peng, Hugo Proenca, Yi Qian, Zhihua Qu, Mehrdad Saif, Ali Serpenguzel, Levent Sevgi, Ashitey Trebi-Ollennu, Leung Tsang, Ge Wang, Andreas Weisshaar, and Enrico Zio

Subjects
Electrical engineering. Electronics. Nuclear engineering, TK1-9971
Abstract

Ram Adapa (Fellow, IEEE) received the B.S. degree from Jawaharlal Nehru Technological University, India, the M.S. degree from IIT Kanpur, India, and the Ph.D. degree from the University of Waterloo, ON, Canada, all in electrical engineering.

Published
2021
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11. IEEE Access ™ Editorial Board

Author

Ram Adapa, Anuradha Annaswamy, Nirwan Ansari, Jun Cai, Jose Capmany, Kun-Shan Chen, J.-C. Chiao, M. Jamal Deen, John W. Evans, Shaikh Fattah, Aura Ganz, Amitava Ghosh, Dmitry Goldgof, Josep M. Guerrero, Melinda Hodkiewicz, Abbas Jamalipour, Weihua Jiang, Lina Karam, Okyay Kaynak, Joy Laskar, Gianluca Lazzi, Victor C. M. Leung, Shengtao Li, Qilian Liang, Jian-Yu Lu, Leda Lunardi, Michael Pecht, Mugen Peng, Hugo Proenca, Yi Qian, Zhihua Qu, Mehrdad Saif, Ali Serpenguzel, Levent Sevgi, Ashitey Trebi-Ollennu, Leung Tsang, Ge Wang, Andreas Weisshaar, and Enrico Zio

Subjects
Electrical engineering. Electronics. Nuclear engineering, TK1-9971
Abstract

Ram Adapa (Fellow, IEEE) received the B.S. degree from Jawaharlal Nehru Technological University, India, the M.S. degree from IIT Kanpur, India, and the Ph.D. degree from the University of Waterloo, ON, Canada, all in electrical engineering.

Published
2021

12. Optical Processes In Microparticles And Nanostructures: A Festschrift Dedicated To Richard Kounai Chang On His Retirement From Yale University

Author

Ali Serpenguzel, Andrew W Poon, Ali Serpenguzel, and Andrew W Poon

Subjects
Nonlinear optics, Optoelectronics
Abstract

This Festschrift is a tribute to an eminent scholar, scientist and engineer, Professor Richard Kounai Chang, on his retirement from Yale University on June 12, 2008. During approximately half of a century of scientific and technological exploration, Professor Chang contributed to the development of linear and nonlinear optics, novel photonic light localization devices, surface second harmonic generation, surface-enhanced Raman scattering, and novel optical methods for detecting airborne aerosol pathogens. This volume contains a collection of articles contributed by former students, collaborators, and colleagues of Professor Chang, who are leaders in academia, national laboratories and industrial research all over the world. The topics cover important optical science and technology areas including linear and nonlinear spectroscopy, linear and nonlinear optics in microparticles, linear and nonlinear spectroscopy of bioaerosols, optical microcavities and nanostructures, and photoscapes or multidisciplinary applications.

Published
2011

13. Silicon microspheres for near-IR communication applications.

Author

Ali Serpenguzel and Abdullah Demir

Subjects
*SILICON compounds, *MICROSPHERES, *NEAR infrared spectroscopy, *TELECOMMUNICATION, *ELECTRONIC amplifiers, *REFRACTIVE index, *ELASTIC scattering, *ELECTROMAGNETIC waves, *LIGHT scattering
Abstract

We have performed transverse electric and transverse magnetic polarized elastic light scattering calculations at 90deg and 0deg in the o-band at 1.3 um for a 15 um radius silicon microsphere with a refractive index of 3.5. The quality factors are on the order of 107 and the mode/channel spacing is 7 nm, which correlate well with the refractive index and the optical size of the microsphere. The 90deg elastic light scattering can be used to monitor a dropped channel (drop port), whereas the 0deg elastic scattering can be used to monitor the transmission channel (through port). The optical resonances of the silicon microspheres provide the necessary narrow linewidths that are needed for high-resolution optical communication applications. Potential telecommunication applications include filters, modulators, switches, wavelength converters, detectors, amplifiers and light sources. Silicon microspheres show promise as potential building blocks for silicon-based electrophotonic integration. [ABSTRACT FROM AUTHOR]

Published
2008
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14. Design of erbium doped microsphere lasers

Author

Prudenzano, F.a, Mescia, L.b, Allegretti, L.a, D'Orazio, A.b, De Sario, M.b, Palmisano, T.a, Féron, P.c, Ferrari, M.d, Nunzi Conti, G.e, Righini, G.C.e, Dipartimento di Ingegneria dell'Ambiente e per lo Sviluppo Sostenibile (DIASS), Politecnico di Bari, Dipartimento di Elettrotecnica e Elettronica (DEE), Fonctions Optiques pour les Technologies de l'informatiON (FOTON), Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Centre National de la Recherche Scientifique (CNRS)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-École Nationale Supérieure des Sciences Appliquées et de Technologie (ENSSAT)-Télécom Bretagne, Caratterizzazione e Sviluppo di Materiali per la Fotonica e l'Optoelecttronica (CSMFO), CNR Istituto di Fotonica e Nanotecnologie [Trento] (IFN), Consiglio Nazionale delle Ricerche [Roma] (CNR)-Consiglio Nazionale delle Ricerche [Roma] (CNR), Istituto di Fisica Applicata 'Nello Carrara' (IFAC), Consiglio Nazionale delle Ricerche [Roma] (CNR), Ali Serpenguzel, Gonçal Badenes, Giancarlo C. Righini, Collaboration: umr6082, CNR-IFN Trento, CNR-IFAC, DIASS, Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-École Nationale Supérieure des Sciences Appliquées et de Technologie (ENSSAT)-Télécom Bretagne-Centre National de la Recherche Scientifique (CNRS), National Research Council of Italy | Consiglio Nazionale delle Ricerche (CNR)-National Research Council of Italy | Consiglio Nazionale delle Ricerche (CNR), and National Research Council of Italy | Consiglio Nazionale delle Ricerche (CNR)

Subjects
Microsphere, Materials science, Optical fiber, rare earth, chemistry.chemical_element, Physics::Optics, 02 engineering and technology, 7. Clean energy, 01 natural sciences, law.invention, Laser, Rare earth, Whispering gallery modes, Applied Mathematics, Computer Science Applications1707 Computer Vision and Pattern Recognition, Electrical and Electronic Engineering, Electronic, Optical and Magnetic Materials, Condensed Matter Physics, 010309 optics, Erbium, 020210 optoelectronics & photonics, Optics, law, 0103 physical sciences, Electronic, 0202 electrical engineering, electronic engineering, information engineering, Optical and Magnetic Materials, Fiber, whispering gallery modes, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], business.industry, Spherical harmonics, Rate equation, laser, chemistry, Whispering-gallery wave, business, Lasing threshold
Abstract

conference 7366 « Photonic Materials, Devices, and Applications », session 4A « Photonic Atoms I » [7366-17], http://spie.org/microtechnologies-new-millennium.xml; International audience; The lasing characteristics of an erbium doped silica glass microsphere coupled to a tapered fiber are numerically investigated in the third band of the optical fiber communication. In the model, the electromagnetic field profile of the whispering gallery modes (WGMs) travelling in the microsphere is described by means of spherical Bessel functions for the radial dependence and spherical harmonics for the angular dependence, at both pump and signal wavelengths. Moreover, the microsphere laser operation has been simulated by taking into account the rare earth ion emission, via the rate equations, and the coupling with the tapered fiber. A number of simulations have been performed in order to demonstrate the feasibility of the active microspheres to be employed as distributed micro laser sources or to fabricate active microsensors.

Published
2009

15. Er3+ - activated photonic structures fabricated by sol-gel and rf-sputtering techniques

Author

Ferrari, M.a, Alombert-Goget, G.a, Armellini, C.a, Berneschi, S.b, Bhaktha, S.N.B.ac, Boulard, B.d, Brenci, M.b, Chiappini, A.a, Chiasera, Duverger-Arfuso, C.d, Féron, P.e, Gonçalves, R.R.f, Jestin, Y.a, Minati, L.g, Moser, E.c, Nunzi Conti, Pelli, Rao, D.N.h, Retoux, R.i, Righini, G.C.b, Speranza, G.g, Caratterizzazione e Sviluppo di Materiali per la Fotonica e l'Optoelecttronica (CSMFO), CNR Istituto di Fotonica e Nanotecnologie [Trento] (IFN), Consiglio Nazionale delle Ricerche [Roma] (CNR)-Consiglio Nazionale delle Ricerche [Roma] (CNR), Istituto di Fisica Applicata 'Nello Carrara' (IFAC), Consiglio Nazionale delle Ricerche [Roma] (CNR), Dipartimento di Fisica (Università Degli Studi di Trento), Università degli Studi di Trento (UNITN)-Istituto Nazionale per la Fisica della Materia (INFM)-Caratterizzazione e Sviluppo di Materiali per la Fotonica e l'Optoelecttronica (CSMFO), Laboratoire des oxydes et fluorures (LdOF ), Le Mans Université (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC), Fonctions Optiques pour les Technologies de l'informatiON (FOTON), Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Centre National de la Recherche Scientifique (CNRS)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-École Nationale Supérieure des Sciences Appliquées et de Technologie (ENSSAT)-Télécom Bretagne, Departamento de Quimica, Universitade de São Paulo, Fondazione Bruno Kessler [Trento, Italy] (FBK), School of Physics, University of Hyderabad, Laboratoire de cristallographie et sciences des matériaux (CRISMAT), École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Institut de Chimie du CNRS (INC), Ali Serpenguzel, Gonçal Badenes, Giancarlo C. Righini, Collaboration : umr6082, CNR-IFN Trento, CNR-IFAC, National Research Council of Italy | Consiglio Nazionale delle Ricerche (CNR)-National Research Council of Italy | Consiglio Nazionale delle Ricerche (CNR), National Research Council of Italy | Consiglio Nazionale delle Ricerche (CNR), Università degli Studi di Trento (UNITN), Le Mans Université (UM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-École Nationale Supérieure des Sciences Appliquées et de Technologie (ENSSAT)-Télécom Bretagne-Centre National de la Recherche Scientifique (CNRS), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche sur les Matériaux Avancés (IRMA), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Institut national des sciences appliquées Rouen Normandie (INSA Rouen Normandie), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), and Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Materials science, Optical fiber, Fabrication, Er3+-activated silica-based glasses, 02 engineering and technology, sol-gel route, 01 natural sciences, Waveguide (optics), law.invention, Optics, law, SiO2-GeO2, 0103 physical sciences, 010306 general physics, Photonic crystal, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], business.industry, Photonic integrated circuit, Metamaterial, Sputter deposition, 021001 nanoscience & nanotechnology, SiO2-HfO2, rf sputtering, Optoelectronics, Photonics, 0210 nano-technology, business
Abstract

conference 7366 « Photonic Materials, Devices, and Applications », Session: 3B « Nanophotonics II » [7366-13], http://spie.org/microtechnologies-new-millennium.xml; International audience; The realization of photonic structures operating at visible and near infrared frequencies is a highly attractive scientific and technological challenge. Since optical fiber innovation, a huge of activity has been performed leading to interesting results, such as optical waveguides and planar lightwave circuits, microphotonic devices, optical microcavities, nanowires, plasmonic structures, and photonic crystals. These systems have opened new possibilities in the field of both basic and applied physics, in a large area covering Information Communication Technologies, Health and Biology, Structural Engineering, and Environment Monitoring Systems. Several materials and techniques are employed to successfully fabricate photonic structures. Concerning materials, Er3+-activated silica-based glasses still play an important role, although recently interesting results have been published about fluoride glass-ceramic waveguides. As far as regards the fabrication methods sol-gel route and rf sputtering have proved to be versatile and reliable techniques. In this article we will present a review of some Er3+-activated photonic structures fabricated by sol gel route and rf sputtering deposition. In the discussion on the sol-gel approach we focus our attention on the silica-hafnia binary system presenting an overview concerning fabrication protocols and structural, optical and spectroscopic assessment of SiO2-HfO2 waveguides activated by Er3+ ions. In order to put in evidence the reliability and versatility of the sol-gel route for photonics applications four different confined structures are briefly presented: amorphous waveguides, coated microspheres, monolithic waveguide laser, and core-shell nanospheres. As examples of rf sputtering technique, we will discuss Er3+-activated silica-hafnia and silica-germania waveguides, the latter system allowing fabrication of integrated optics structures by UV photo-imprinting. Finally, two examples of photonic crystal structures, one prepared by sol-gel process and the other one fabricated by rf sputtering deposition, will be illustrated.

Published
2009

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