Results 41 to 50 of about 3,322,116 (291)

Numerical Analysis of Nonlinear Dynamics Based on Spin-VCSELs with Optical Feedback

open access: yesPhotonics, 2021
In this paper, the nonlinear dynamics of a novel model based on optically pumped spin-polarized vertical-cavity surface-emitting lasers (spin-VCSELs) with optical feedback is investigated numerically.
Tingting Song   +6 more
doaj   +1 more source

Results of the Optical Downlink Experiment KIODO from OICETS Satellite to Optical Ground Station Oberpfaffenhofen (OGS-OP) [PDF]

open access: yes, 2007
Optical LEO downlinks from the Japanese OICETS to the optical ground station built by the German Aerospace Center (DLR) near Munich have been performed. This was the first optical LEO downlink on European grounds.
Perlot, Nicolas   +13 more
core   +1 more source

The Dynamics of Semiconductor Laser under Optical Feedback

open access: yesمجلة علوم ذي قار, 2019
The dynamical behavior of semiconductor laser in the present of optical feedback is studied by varying number of control parameters that appeared in the adopted theoretical model viz, linewidth enhancement factor , pump level , delay time and feedback ...
Abadhar R. Ahmed
doaj   +2 more sources

Comparison of plane mirror vs retroreflector performance for laser-self-mixing displacement sensors [PDF]

open access: yesJournal of the European Optical Society-Rapid Publications, 2009
The behavior of a displacement optical sensor based on the Laser-Self-Mixing effect employing a plane mirror (PT) and a solid corner-cube (CC) as moving target is analyzed.
Ottonelli S.   +4 more
doaj   +1 more source

AC/DC: The FERMI FEL Split and Delay Optical Device for Ultrafast X-ray Science

open access: yesPhotonics, 2022
Free-electron lasers (FELs) are the most advanced class of light-sources, by virtue of their unique capability to lase high-brightness pulses characterized by wavelengths spanning the extreme-ultraviolet, the soft and hard X-ray spectral domains, as well
Alberto Simoncig   +14 more
doaj   +1 more source

Experimental investigations of Synchronization in two optically coupled chaotic systems utilizing optical feedback and optical injection [PDF]

open access: yesمجلة جامعة الانبار للعلوم الصرفة, 2018
An experimentally observations of chaos synchronization have been investigated between two optically coupled laser diodes. Two schemes of optical injection, bidirectional and unidirectional optical injections have been used.
Salam K. Mousa   +2 more
doaj   +1 more source

Influence of Radiative and Non-Radiative Recombination Lifetimes and Feedback Strength on the States and Relative Intensity Noise of Laser Diode

open access: yesPhotonics, 2022
A systematic treatment of the influence of the optical feedback (OFB) and the ratio of the radiative and the non-radiative recombination lifetime (τr/τnr) on the relative intensity noise (RIN) and the system dynamics of a semiconductor laser (SL) is ...
Salah Abdulrhmann   +2 more
doaj   +1 more source

Coupled-wave theory for distributed-feedback optical parametric amplifiers and oscillators [PDF]

open access: yes, 2012
[[abstract]]We have derived a coupled-wave theory for optical parametric amplification and oscillation in a dielectric-modulated nonlinear optical material whose dielectric period is in resonance with the signal wave.
Huang YC;Lin YY
core   +1 more source

Bifurcation analysis of a multi-transverse-mode VCSEL [PDF]

open access: yes, 2008
We study the behaviour of a multi-transverse-mode vertical-cavity surface-emitting laser subject to optical feedback in which the optical modes are coupled through the external round-trip. Starting from a delayed partial differential equation description
Green, K, Green, K., Krauskopf, B
core   +1 more source

Effects of Power Split Ratio and Optical Delay Phase Tuning on Stabilization of Self-Mode-Locked Quantum-Dash Lasers Subject to Dual-Loop Optical Feedback

open access: yesIEEE Photonics Journal, 2020
In the present work, we report a path of RF stabilization versus delay subject to self-mode-locked (SML) two-section quantum-dash (QDash) lasers emitting at ∼1.55 μm and operating at ∼21 GHz repetition rate using a feedback ...
Haroon Asghar, John G. McInerney
doaj   +1 more source

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