Results 1 to 10 of about 449,684 (296)
Laser Optical Feedback Turns 60. [PDF]
Sensors (Basel), 2023 As soon as a laser is fired, some of the emitted light is scattered backward and coupled with the cavity modes, causing instability [...]
Dabbicco M, Columbo LL, Perchoux J.
europepmc +5 more sources
Dual-Frequency Doppler LiDAR Based on External Optical Feedback Effect in a Laser [PDF]
Sensors, 2020 A novel Dual-frequency Doppler LiDAR (DFDL) is presented where the dual-frequency light source is generated by using external optical feedback (EOF) effect in a laser diode (LD). By operating a LD at period-one (P1) state and choosing suitable LD related
Zhuqiu Chen +6 more
doaj +2 more sources
All-optical versus electro-optical quantum-limited feedback [PDF]
Physical Review A, 1994 All-optical feedback can be effected by putting the output of a source cavity through a Faraday isolator and into a second cavity which is coupled to the source cavity by a nonlinear crystal.
A. Barchielli +20 more
core +6 more sources
Application of Near-Infrared Optical Feedback Cavity Enhanced Absorption Spectroscopy (OF-CEAS) to the Detection of Ammonia in Exhaled Human Breath [PDF]
Sensors, 2019 The qualitative and quantitative analysis to trace gas in exhaled human breath has become a promising technique in biomedical applications such as disease diagnosis and health status monitoring.
Zhifu Luo, Zhongqi Tan, Xingwu Long
doaj +2 more sources
Achieving Long Distance Sensing Using Semiconductor Laser with Optical Feedback by Operating at Switching Status [PDF]
Sensors, 2022 In this study, a novel distance sensing method is presented by using a semiconductor laser (SL) with optical feedback (OF) and operating the SL at a switching status happened between two nonlinear dynamic states (stable state and period-one state).
Bairun Nie +7 more
doaj +2 more sources
Modulation Characteristics of Period-One Oscillations in Quantum Cascade Lasers
Applied Sciences, 2021 Quantum cascade lasers subject to tilted optical feedback produce periodic oscillations, quasi-periodic oscillations, and low-frequency oscillations. This work presents the modulation characteristics of period-one (P1) oscillations in a quantum cascade ...
Binbin Zhao +3 more
doaj +1 more source
Photonics, 2022 Semiconductor lasers can exhibit complex dynamical behavior in the presence of external perturbations. Delayed optical feedback, re-injecting part of the emitted light back into the laser cavity, in particular, can destabilize the laser’s emission.
Xavier Porte +3 more
doaj +1 more source
Photonics, 2022 In this work, we experimentally investigate the nonlinear dynamics of an interband cascade laser (ICL) under variable-aperture optical feedback implemented by a gold mirror combining with a ring-actuated iris diaphragm (RAID). By continuously varying the
Maorong Zhao +7 more
doaj +1 more source
Band-Rejection Feedback for Chaotic Time-Delay Signature Suppression in a Semiconductor Laser
IEEE Photonics Journal, 2022 Chaos generation from a semiconductor laser under band-rejection optical feedback is proposed and investigated numerically and experimentally. The band-rejection feedback performs better than the conventional broadband mirror feedback in concealing the ...
Song-Sui Li +7 more
doaj +1 more source
Optical Feedback Linear Cavity Ringdown Spectroscopy
Frontiers in Physics, 2022 Optical feedback cavity ringdown spectroscopy is presented with a linear Fabry–Pérot cavity and a cost-effective DFB laser. To circumvent the low coupling efficiency caused by the broad laser linewidth, an optical feedback technique is used, and an ...
Xingping Wang +11 more
doaj +1 more source