Results 261 to 270 of about 2,541,468 (293)

Dynamic Evolution of Harmonic Mode-Locking in a SESAM-Based Mode-Locked Semiconductor Laser

Laser Congress 2024 (ASSL, LAC, LS&C)
We demonstrate the natural dynamic evolution of harmonic mode-locking by increasing the pump power with only three components of a VECSEL gain chip, a semiconductor saturable absorber, and a focusing lens.
Yu-Hsin Hsu, Yung-Fu Chen
openaire   +1 more source

Double-Frequency Harmonic Mode Locking in a Pulsed Nd:YAG Laser

Conference on Lasers and Electro-Optics Europe, 1996
The harmonic mode locking (ML), i.e. the modulation of resonator losses at a frequency that is an integer multiple N of the fundamental mode spacing, has been a technique intensively studied for achieving minimum pulse duration in low-gain actively mode locked continuos wave (CW) Nd:YAG laser (see refs. [1, 2] and references therein). The experiment we
P. Di Trapani, S. Amati, M. Bondani, A. Andreoni, G. Cavalcabo, E. Zanzottera   +5 more
openaire   +1 more source

High-Resolution Mode-Locked Laser Rangefinder With Harmonic Downconversion

IEEE Transactions on Instrumentation and Measurement, 2012
The development of new pulsed optical sources with high pulse stability allows the improvement of common contactless measurement techniques. A new two-way optical rangefinder, employing a femtosecond laser, is presented here from design to implementation. The system is based on the evaluation of the phase delay of the returning optical pulse train with
Pesatori, A., Norgia, M., Svelto, C., ZUCCO, MASSIMO, Stupka, M., De Marchi, A.   +6 more
openaire   +4 more sources

Intermodal-beating mode-locking: toward higher-order harmonic mode-locking of Raman laser

Asia Communications and Photonics Conference, 2012
We demonstrate a new mode-locking technique (i.e. intermodal-beating mode-locking, IBML) in Raman fiber lasers to develop high-order harmonic mode-locking. By satisfying the harmonic frequency-matched condition of IBML, the harmonic of mode-locking as high as 680th-order is successfully achieved.
Zhengqian Luo, Huihui Cheng, Hongyan Fu, Chenchun Ye, Huiying Xu, Zhiping Cai   +5 more
openaire   +1 more source

Experimental study of the stability of harmonic mode-locking in quantum dot passively mode-locked lasers

CLEO: 2014, 2014
The stability of harmonic mode-locking in a two-section quantum dot passively mode-locked laser is examined using a Frequency Resolved Optical Gating pulse measurement system and shown for the first time to be a stable effect.
J. K. Mee, R. Raghunathan, D. Murrell, A. Braga, Y. Li, L. F. Lester   +5 more
openaire   +1 more source

Axial mode locking in a harmonic-multiplying, inverted gyrotwystron

IEEE Transactions on Plasma Science, 2000
When in microwave sources, an open waveguide operating at frequencies close to cutoff is used as a resonator, a number of modes with the same transverse structure, but different axial distribution can be excited by an electron beam. The width of the resonance curves of these modes broadens as the number of axial variations grows.
V.L. Granatstein, J.C. Rodgers, H. Guo, G.S. Nusinovich, J. Zhao   +4 more
openaire   +1 more source

Harmonically Fourier Domain Mode-Locked Optoelectronic Oscillator

IEEE Photonics Technology Letters, 2019
We experimentally demonstrate a harmonically Fourier domain mode-locked optoelectronic oscillator (FDML OEO). Harmonic Fourier domain mode locking operation is achieved when the cavity round-trip time is equal to integer multiples of the scanning period of the filter in the OEO loop.
Tengfei Hao, Jian Tang, Wei Li, Ninghua Zhu, Ming Li   +4 more
openaire   +1 more source

Colliding-pulse harmonically mode-locked fiber laser

Applied Physics B, 2001
A Fabry–Perot semiconductor saturable absorber has been implemented in a colliding pulse configuration for stabilizing a harmonically mode-locked fiber laser. An environmentally stable CPM design is shown to enhance supermode suppression.
O.G. Okhotnikov, M. Guina
openaire   +1 more source

Stabilization of passive harmonic mode-locking by amplitude modulation

IEEE Photonics Technology Letters, 2002
We demonstrate a fiber laser that is passively mode locked by a semiconductor saturable absorber and stabilized by the amplitude modulation. The synchronization of a dropout-free harmonic mode locking to an external clock was obtained with the pulse characteristics solely determined by the saturable absorber action, and not by the applied amplitude ...
O.G. Okhotnikov, M. Guina, M. Pessa
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Rational harmonic mode-locked optoelectronic oscillator

5th Optics Young Scientist Summit (OYSS 2022), 2022
Zhuoyue Tuo, Chunbo Zhao, Yansong Meng, Erwang Du, Yuling He, Jingwen Gong, Xiaojun Li, Qinggui Tan   +7 more
openaire   +1 more source