Results 31 to 40 of about 13,087 (290)

Graphene saturable absorbers for VECSELs [PDF]

SPIE Proceedings, 2014
We report mode-locking of an optically pumped VECSEL using a graphene-based saturable absorber mirror (GSAM). Self-starting and stable modelocked operation is demonstrated with 473 fs pulses at 1.5 GHz repetition rate and 949 nm center wavelength. Wavelength tuning is achieved over a 46 nm bandwidth. We discuss the mirror design, the fabrication of the
V. J. Wittwer, C. A. Zaugg, Z. Sun, D. Popa, S. Milana, T. S. Kulmala, R. S. Sundaram, M. Mangold, M. Golling, Y. Lee, J. H. Ahn, U. Keller, A. C. Ferrari   +12 more
openaire   +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

Compact Passively Q-Switched Tm:KY(WO₄)₂ Laser

Приборы и методы измерений, 2022
Diode-pumped thulium lasers emitting in the spectral range near 2 μm are attractive for applications in different areas: surgery, rangefinding, and environmental atmosphere monitoring. In this article the latest results of Tm:KYW laser performance with a
V. E. Kisel
doaj   +1 more source

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

Passively Q-switched Yb-doped fiber laser based on Ag nanoplates saturable absorber [PDF]

EPJ Web of Conferences, 2020
We experimentally investigated Ag nanoplates as saturable absorber for Q-switched pulse generation in an Yb-doped fiber laser. The pulse train repetition rate increases with the increase of the pump power. At the maximum pump power of 600 mW, the maximum
Wang Pan, Scardaci Vittorio
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

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

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