Results 31 to 40 of about 449,684 (296)
Room temperature plasmon laser by total internal reflection [PDF]
, 2010 Plasmon lasers create and sustain intense and coherent optical fields below light's diffraction limit with the unique ability to drastically enhance light-matter interactions bringing fundamentally new capabilities to bio-sensing, data storage ...
AV Akimov +30 more
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IEEE Photonics Journal, 2018 An InP-based, monolithically integrated multiwavelength laser with optical feedback is presented. We demonstrate the performance of the dual-wavelength operation. Single-mode lasing is obtained for each of the two channels within a temperature range from
Dan Zhao +5 more
doaj +1 more source
Adaptive Optics Feedback Control [PDF]
EAS Publications Series, 2013 This book is a collection of 19 articles which reflect the courses given at the Collège de France/Summer school “Reconstruction d'images − Applications astrophysiques“ held in Nice and Fréjus, France, from June 18 to 22, 2012. The articles presented in this volume address emerging concepts and methods that are useful in the complex process of improving
Folcher, J.-P. +3 more
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Hysteresis Loop Effect on Intensity for Horizontal and Vertical Polarization by Optical Feedback [PDF]
مجلة جامعة الانبار للعلوم الصرفة, 2020 The effect of optical feedback on hysteresis loop (HL) is investigated. Hysteresis loop occurs between two eigenstates of the He-Ne laser (x , y) and it changes by optical feedback at angles from 0° to 180°.
Ehsan Ali Abed +2 more
doaj +1 more source
Influence of the absorber dimensions on wavefront shaping based on volumetric optoacoustic feedback [PDF]
, 2015 The recently demonstrated control over light distribution through turbid media based on real-time three-dimensional optoacoustic feedback has offered promising prospects to interferometrically focus light within scattering objects.
Dean-Ben, X. L. +3 more
core +1 more source
VCSEL with multi-transverse cavities with bandwidth beyond 100 GHz
Nanophotonics, 2021 To fulfill the demands of high-speed photonic applications, researchers, and engineers have been working to improve the modulation bandwidth (MBW) of semiconductor lasers.
Heidari Elham +5 more
doaj +1 more source
Semiconductor laser with filtered optical feedback: from optical injection to conventional feedback
IMA Journal of Applied Mathematics, 2007 AbstractWe study a model for a semiconductor laser subject to filtered optical feedback,that is a system of delay differential equations (DDEs). In this model the filter is characterisedby a mean frequency Ωm and a filter width λ. In the limit of a narrow filter(λ → 0) the laser equations reduce to the equations for a laser with optical injection ...
Hek, G., Rottschäfer, V.
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Photonics, 2023 Spin-polarized vertical-cavity surface-emitting lasers (spin-VCSELs) with birefringence-induced polarization oscillations have been proposed to generate desired photonic microwave signals.
Zhenye Shen +5 more
doaj +1 more source
OPTICAL TRANSISTORS WITH NEGATIVE FEEDBACK
Le Journal de Physique Colloques, 1988 We consider a Fabry-Perot filled with a nonlinear medium. The transmitted (It) and reflected (Ir) intensities are related to the holding or input beam intensity Ih by the Airy formulae: It is assumed that the angle of incidence is sufficiently small (i.e., near normal incidence) to neglect the angular dependence in the Airy function.
Mandel, P., Smith, S.
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Mechanically Contacted Distributed-Feedback Optical Microcavity
Nanomaterials, 2022 We report a construction of distributed-feedback (DFB) optical microcavities, which is realized through mechanical contact between a high-quality planar thin film of a polymeric semiconductor and a large-area homogeneous nanograting. Using poly[(9,9-dioctylfluorenyl-2,7-diyl)-alt-(benzo[2,1,3] thiadiazol-4,8-diyl)] (F8BT) as the active medium for the ...
Yue Liu +4 more
openaire +3 more sources