Results 31 to 40 of about 18,598 (289)

Self-Pulsating Semiconductor Lasers: Theory and Experiment [PDF]

, 1999
We report detailed measurements of the pump-current dependency of the self-pulsating frequency of semiconductor CD lasers. A distinct kink in this dependence is found and explained using rate-equation model. The kink denotes a transition between a region
Elsasser, W., Hernandez-Garcia, E., Landais, P., Lenstra, D., Lynch, S., Miguel, M. San, Mirasso, C. R., O'Gorman, J., Phelan, P., van Tartwijk, G. H. M.   +9 more
core   +6 more sources

Theoretical Study of The Ratio A/As Effect on Saturable Absorber Performance of Passive Q-switched Tm+3 Doped Fiber Laser System

مجلة علوم ذي قار
       The effect of the ratio of active media effective area to the saturable absorber effective area (A/As) on saturable absorber performance has been studied  numerically for passive Q-switching fiber laser system doped with Tm+3 as an active ...
Tahani M . Hussein , Abdul - Kareem Mahdi Salih, M. Benhaliliba   +2 more
doaj   +1 more source

Multilayer black phosphorus as broadband saturable absorber for pulsed lasers from 1 to 2.7 {\mu}m wavelength

, 2015
It attracts wide interest to seek universe saturable absorber covering wavelengths from near infrared to mid-infrared band. Multilayer black phosphorus, with variable direct bandgap (0.3-2 eV) depending on the layer number, becomes a good alternative as ...
Guo, Zhinan, Kong, Lingchen, Qian, Liejia, Qin, Zhipeng, Xie, Guoqiang, Yuan, Peng, Zhang, Han   +6 more
core   +1 more source

Generation and Quenching of Intensity Pulsations in Semiconductor Lasers Coupled to External Cavities [PDF]

, 1980
The behavior of self-pulsing and nonpulsing lasers coupled to external cavities is investigated experimentally and theoretically. We investigate the dependence of the pulsation characteristics on the external cavity length using a saturable absorber ...
Figueroa, Luis, Lau, Kam Y., Yariv, Amnon   +2 more
core   +1 more source

Passively Q-switched 2.79-μm Er, Cr: YSGG laser based on pure water saturable absorber

Frontiers in Physics
Exploring suitable saturable absorber materials for the 2.79 μm waveband is always a focus in passive Q-switching laser technology. Pure water exhibits excellent fluidity, high chemical stability, and outstanding thermal properties; notably, its recovery
Yinze Wang, Yinze Wang, Lei Huang, Lei Huang, Haolin Kong, Yueyun Zhang, Tingqing Cheng, Li Wang, Li Wang, Haihe Jiang, Haihe Jiang   +10 more
doaj   +1 more source

Tunable Gold Nanorods Q-Switcher for Pulsed Er-Doped Fiber Laser

IEEE Photonics Journal, 2017
We prepared the gold nanorods (GNRs) via seed-mediated growth method, and fabricated the fiber-compatible saturable absorption device with it. We found that the nonlinear absorption behavior of the fiber-compatible GNRs saturable absorber can be tuned by
Guobao Jiang, Yu Jin, Lili Miao, Lin Du, Zhe Kang, Bin Huang, Chujun Zhao, Shuangchun Wen   +7 more
doaj   +1 more source

Nonlinear Stabilization of High-Energy and Ultrashort Pulses in Passively Modelocked Lasers with Fast Saturable Absorption

, 2016
The two most commonly used models for passively modelocked lasers with fast saturable absorbers are the Haus modelocking equation (HME) and the cubic-quintic modelocking equation (CQME).
Marks, Brian S., Menyuk, Curtis R., Wang, Shaokang   +2 more
core   +1 more source

Coherent instabilities in a semiconductor laser with fast gain recovery [PDF]

, 2006
We report the observation of a coherent multimode instability in quantum cascade lasers (QCLs), which is driven by the same fundamental mechanism of Rabi oscillations as the elusive Risken-Nummedal-Graham-Haken (RNGH) instability predicted 40 years ago ...
A. Belyanin, A. Gordon, A. Yariv, A. Z. Grasiuk, C. Jirauschek, Christine Y. Wang, D. Bour, F. X. Kärtner, Federico Capasso, G. Höfler, H. Fu, H. Haken, H. Haken, J. Faist, L. Allen, L. Diehl, M. Troccoli, R. W. Boyd, S. Corzine, T. Voigt, Ya. I. Khanin   +20 more
core   +2 more sources

Broader, flatter optical spectra of passively mode-locked semiconductor lasers for a wavelength-division multiplexing source [PDF]

, 1997
Using the time domain master equation for a complex electric-field pulse envelope, we find analytical results for the optical spectra of passively mode-locked semiconductor lasers. The analysis includes the effect of optical nonlinearity of semiconductor
Eliyahu, Danny, Salvatore, Randal A., Yariv, Amnon   +2 more
core   +1 more source

Mid-Infrared Dual-Wavelength Passively Q-Switched Er: SrF₂ Laser by CsPbCl₃ Quantum Dots Absorber

Crystals, 2022
A passively Q-switched compact dual-wavelength Er: SrF2 laser, operating at a 2729.73 nm and 2747.2 nm wavelength, was demonstrated by utilizing CsPbCl3 quantum dots (QDs) as a saturable absorber (SA).
Leilei Guo, Maorong Wang, Yifan Zhang, Shuaiyi Zhang, Kai Zhong, Qiuling Zhao, Lihua Teng, Xia Wang, Jianquan Yao   +8 more
doaj   +1 more source