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Your search keyword '"Lagendijk, Aart"' showing total 104 results
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104 results on '"Lagendijk, Aart"'

1. Positioning and finding quantum dots in silicon nanostructures

Author

Schulz, Andreas Stefan, Grishina, Diana, Harteveld, Cornelis A.M., Pacureanu, Alexandra Teodora, Lagendijk, Aart, Huskens, J., Vancso, Julius, Cloetens, Peter, Vos, Willem L., Complex Photonic Systems, MESA+ Institute, Molecular Nanofabrication, and Materials Science and Technology of Polymers

Subjects
Condensed Matter::Soft Condensed Matter, polymerbrushes, xrayfluorescencetomography, photoniccrystals, quantumdots
Abstract

Control over the interaction between light and matter will have far-ranging consequences in chemistry, material science, physics, and biology. An important tool for the advanced control of light is offered by 3D photonic crystals with a photonic band gap, a range of frequencies for which light is forbidden to exist. We have developed methods to precisely control the location of lead sulfide quantum dots on silicon surfaces by attaching the dots to functionalized polymer brushes. Encouraged by successes on planar silicon wafers, we introduced quantum dots with polymer brushes in the nanopores of 2D and even 3D photonic band gap crystals. By synchrotron X-ray fluorescence tomography, we obtain detailed information on the positioning of the brushes and the dots. Notably, the quantum dot signal correlates very strongly with the brush signal, validating our approach. In optical experiments we find evidence for considerable emission inhibition in the 3D photonic band gap.

Published
2020

6. Fabrication and Fundamentals of Complex Nanophotonic Media

Author

Meretska, Maryna, Adhikary, Manashee, Devashish, D., Grishina, Diana, Hack, Sjoerd Arthur, Schulz, Andreas Stefan, Sokolov, Sergei, Aas, Mehdi, Hasan, Shakeeb Bin, Ojambati, Oluwafemi Stephen, Uppu, Ravitej, Harteveld, Cornelis A.M., Fokkema, Wouter K., Gietema, Jellmer, Ottens, Iris, Velsink, Mathijs, Venderbosch, Pim, Barnes, William Leslie, Klärs, Jan Andre, Lagendijk, Aart, Pinkse, Pepijn W.H., Vos, Willem L., Complex Photonic Systems, Materials Science and Technology of Polymers, and Molecular Nanofabrication

Published
2017

8. Light propagation in solid state lighting

Author

Meretska, Maryna, Lagendijk, Aart, Thyrrestrup Nielsen, Henri, IJzerman, Wilbert L., Mosk, Allard, Vos, Willem L., and Complex Photonic Systems

Published
2017

10. How to distinguish scattered and absorbed light from re-emitted light for white LEDs?

Author

Meretska, Maryna, Lagendijk, Aart, Thyrrestrup Nielsen, Henri, Mosk, Allard, IJzerman, Wilbert L., Vos, Willem L., and Complex Photonic Systems

Abstract

We have studied the light transport through phosphor diffuser plates that are used in commercial solid-state lighting modules (Fortimo). These polymer plates contain YAG:Ce+3 phosphor particles that scatter, absorb and re-emit incident light in the visible wavelength range (400-700 nm). To distinguish scattered from re-emitted light we used a narrowband light source. The re-emitted light is Stokes shifted to the red with respect to the scattered light, and is then spectrally separated from the scattered light. By using this technique we have measured the diffuse transmission of the phosphor diffuser plates. We use diffusion theory to extract the transport mean free path ltr over the full wavelength range. Simultaneously, we determine the absorption mean free path labs in the wavelength range 400 to 530 nm where YAG:Ce+3 absorbs. The measured absorption (1/labs) spectrum provides information about optimal design parameters: thickness of the plates and phosphor concentration of white LED

Published
2017

11. Non-Rayleigh distribution of reflected intensity from photonic crystals with disorder

Author

Ojambati, Oluwafemi Stephen, Yeganegi Dastgerdi, Elahe, Mosk, Allard, Lagendijk, Aart, Vos, Willem L., Complex Photonic Systems, and Faculty of Science and Technology

Abstract

Structural disorder results in multiple scattering in real photonic crystals, which have been widely used for applications and studied for fundamental interests. The interaction of light with such complex photonic media is expected to show interplay between disorder and order. For a completely disordered medium, the intensity statistics is well-known to obey Rayleigh statistics with a negative exponential distribution function, corresponding to absence of correlations. Intensity statistics is unexplored however for complex media with both order and disorder. We study experimentally the intensity statistics of light reflected from photonic crystals with various degree of disorder. We observe deviations from the Rayleigh distribution and the deviations increase with increasing long-range order.

Published
2016

12. Light Propagation in Complex Media

Author

Meretska, Maryna, Aas, Mehdi, Amitonova, Lyubov, Descloux, Adrien, Dubbink, T., Hong, Peilong, Hooijschuur, Peter, Ladovrechis, K., Lian, Jin, Ojambati, Oluwafemi Stephen, Sokolov, Sergei, Yuce, E., IJzerman, Wilbert, Barnes, William Leslie, Mosk, Allard, Pinkse, Pepijn Willemszoon Harry, Lagendijk, Aart, Vos, Willem L., and Complex Photonic Systems

Published
2016

13. Injecting energy into the fundamental

Author

Ojambati, Oluwafemi Stephen, Yilmaz, H., Lagendijk, Aart, Mosk, Allard, Vos, Willem L., and Complex Photonic Systems

Subjects
METIS-318907
Published
2016

22. Selective coupling of light into the

Author

Ojambati, Oluwafemi Stephen, Yilmaz, H., Lagendijk, Aart, Mosk, Allard, Vos, Willem L., and Complex Photonic Systems

Subjects
METIS-318913
Published
2016

23. Energy density distribution of shaped waves inside scattering media mapped onto a complete set of diffusion modes

Author

Ojambati, Oluwafemi Stephen, Mosk, Allard, Vellekoop, Ivo Micha, Lagendijk, Aart, Vos, Willem L., Complex Photonic Systems, Biomedical Photonic Imaging, and Faculty of Science and Technology

Subjects
IR-100776, METIS-317341
Abstract

We show that the spatial distribution of the energy density of optimally shaped waves inside a scattering medium can be described by considering only a few of the lowest eigenfunctions of the diffusion equation. Taking into account only the fundamental eigenfunction, the total internal energy inside the sample is underestimated by only 2%. The spatial distribution of the shaped energy density is very similar to the fundamental eigenfunction, up to a cosine distance of about 0.01. We obtained the energy density inside a quasi-1D disordered waveguide by numerical calculation of the joined scattering matrix. Computing the transmission-averaged energy density over all transmission channels yields the ensemble averaged energy density of shaped waves. From the averaged energy density obtained, we reconstruct its spatial distribution using the eigenfunctions of the diffusion equation. The results from our study have exciting applications in controlled biomedical imaging, efficient light harvesting in solar cells, enhanced energy conversion in solid-state lighting, and low threshold random lasers.

Published
2016

26. Programmable complex photonic circuits

Author

Yilmaz, H., Hummel, T., Lian, Jin, Sokolov, Sergei, Tentrup, Tristan Bernhard Horst, Uppu, Ravitej, Wolterink, Tom, Amitonova, Lyubov, Bosch, Jeroen, Ctistis, Georgios, Goorden, S.A., Yuce, E., Boller, Klaus J., Lagendijk, Aart, Vos, Willem L., Mosk, Allard, Pinkse, Pepijn Willemszoon Harry, Complex Photonic Systems, and Laser Physics & Nonlinear Optics

Subjects
METIS-313539
Published
2015

27. Stirring of light in ordered and disordered media

Author

Grishina, Diana, Meretska, Maryna, Schulz, A., Thyrrestrup Nielsen, Henri, Marakis, Evangelos, Ojambati, Oluwafemi Stephen, Ctistis, Georgios, Yilmaz, H., Hasan, Shakeeb Bin, Mohammadabadi, R.M., Hofste, J., Harteveld, Cornelis A.M., Barnes, William Leslie, Pinkse, Pepijn Willemszoon Harry, Vos, Willem L., Mosk, Allard, Lagendijk, Aart, and Complex Photonic Systems

Subjects
METIS-313566
Published
2015

31. Light propagation and emission in complex photonic media

Author

Vos, Willem L., Lagendijk, Aart, Mosk, Allard, Ghulinyan, M., Pavesi, L., Complex Photonic Systems, and Faculty of Science and Technology

Subjects
IR-99059, METIS-314809, ComputingMilieux_MISCELLANEOUS
Abstract

This paper is Chapter 1 of the book "Light Localisation and Lasing: Random and Pseudorandom Photonic Structures", edited by Mher Ghulinyan and Lorenzo Pavesi (Cambridge University Press, Cambridge, 2015). It provides a general introduction to the field.

Published
2015

32. Light scattering from three-level systems: The T matrix of a point dipole with gain

Author

Savels, T., Savels, Tom, Mosk, Allard, Lagendijk, Aart, Complex Photonic Systems, and Faculty of Science and Technology

Subjects
Physics, T matrix, FOS: Physical sciences, Disordered Systems and Neural Networks (cond-mat.dis-nn), Condensed Matter - Disordered Systems and Neural Networks, IR-53288, Atomic and Molecular Physics, and Optics, Three level, Light scattering, Formalism (philosophy of mathematics), Dipole, Quantum mechanics, Master equation, Atom, METIS-225847, S-matrix
Abstract

We present an extension of the T-matrix approach to scattering of light by a three-level system, using a description based on a Master equation. More particularly, we apply our formalism to calculate the T matrix of a pumped three-level atom, providing an exact and analytical expression describing the influence of a pump on the light-scattering properties of an atomic three-level system.

Published
2005
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33. Diffusion of light in white LEDs

Author

Meretska, Maryna, Leung, Y.F.V., Tukker, T.W., Lagendijk, Aart, Mosk, Allard, IJzerman, Wilbert, Vos, Willem L., and Complex Photonic Systems

Subjects
METIS-309310
Published
2014

35. Photonic band gap crystals

Author

Yeganegi Dastgerdi, Elahe, Lagendijk, Aart, Mosk, Allard, Vos, Willem L., and Complex Photonic Systems

Subjects
METIS-302893
Published
2014

36. Dynamic tuning and switching of nanophotonic structures

Author

Sokolov, Sergei, Lian, Jin, Yuce, E., Thyrrestrup Nielsen, Henri, Ctistis, Georgios, Perez-Vizcaino, J., Reuling, J., Lagendijk, Aart, Vos, Willem L., Mosk, Allard, and Complex Photonic Systems

Subjects
METIS-305445
Published
2014

37. Optimal control of light propagation in complex media

Author

Yilmaz, H., Akbulut, D., Goorden, S.A., Ojambati, Oluwafemi Stephen, Lian, Jin, Sokolov, Sergei, van de Graaff, M., Aulbach, Jochen, Vos, Willem L., Lagendijk, Aart, Mosk, Allard, and Complex Photonic Systems

Subjects
METIS-300707
Published
2013

38. Precise control of light emission in photonic materials

Author

Yeganegi Dastgerdi, Elahe, Grishina, Diana, Harteveld, Cornelis A.M., Leung, Y.F.V., Schulz, Andreas Stefan, Barnes, William Leslie, Lagendijk, Aart, Mosk, Allard, Vos, Willem L., and Complex Photonic Systems

Subjects
METIS-297949
Published
2013

44. Full-field characterization of photonic-crystal waveguides

Author

Singh, A., Huisman, S.R., Ctistis, Georgios, Korterik, Jeroen P., Segerink, Franciscus B., Herek, Jennifer Lynn, Stobbe, S., Lagendijk, Aart, Lodahl, P., Vos, Willem L., Pinkse, Pepijn Willemszoon Harry, Complex Photonic Systems, and Optical Sciences

Subjects
METIS-290669
Published
2012

50. Scattering optics resolve nanostructure

Author

Bertolotti, J., van Putten, E.G., Akbulut, D., Vos, Willem L., Lagendijk, Aart, Mosk, Allard, Dobisz, Elizabeth A., Eldada, Louay A., and Complex Photonic Systems

Subjects
Diffraction, Materials science, Opacity, Scattering, business.industry, Near-field optics, Ray, METIS-281175, Light scattering, law.invention, Lens (optics), Optics, law, business, Refractive index
Abstract

Scattering of light is considered a nuisance in microscopy. It limits the penetration depth and strongly deteriorates the achievable resolution. However, by gaining active spatial control over the optical wave front it is possible to manipulate the propagation of scattered light far in the multiple scattering regime. These wave front shaping techniques have given rise to new high-resolution microscopy methods based on strong light scattering. This is based on the realization that scattering by stationary particles performs a linear transformation on the incident light modes. By inverting this linear transformation, one can focus light through an opaque material and even inside it. An extremely high resolution focus can be obtained using scatterers embedded in a high-index medium, where the diffraction limit for focusing is reduced by a factor n. We have constructed a scattering lens made of the high-index material gallium phosphide (GaP) which is transparent over most of the visible spectrum and has the highest index of all nonabsorbing materials in the visible range. This yields a focal spot resolution of less than 100 nm, and it seems theoretically possible to create a focus of order 70 nm. The system resolution of a microscope based on this lens could be substantially higher.n

Published
2011
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