Results 31 to 40 of about 7,518 (151)

Frequency-tunable Optoelectronic Oscillator With Synchronized Dual-Wavelength Narrow-Linewidth Laser Output

IEEE Access, 2018
Synchronized dual-wavelength narrow-linewidth lasers and a wideband frequency-tunable optoelectronic oscillator are simultaneously realized using mutual-injection-locked distributed feedback (DFB) lasers.
Guangcan Chen, Dan Lu, Song Liang, Lu Guo, Wu Zhao, Yongguang Huang, Lingjuan Zhao   +6 more
doaj   +1 more source

L-Band Erbium Fiber Laser with Tunable and Narrow Sub-kHz Linewidth Output

Applied Sciences, 2023
In this paper, a wavelength-selectable erbium-doped fiber (EDF) laser in L-band bandwidth with a simple structure and low cost is described. To obtain stable single-longitudinal-mode (SLM) and narrow laser linewidth, the 2 m unpumped EDF-based saturable ...
Lan-Yin Chen, Yu-Ting Lai, Chien-Hung Yeh, Chun-Yen Lin, Kuan-Ming Cheng, Jing-Heng Chen, Chi-Wai Chow   +6 more
doaj   +1 more source

High-Power Narrow-Linewidth Tunable 670.8-nm Master Oscillator Power Amplifier With High Efficiency

IEEE Photonics Journal, 2017
A highly efficient 670.8-nm high-power narrow-linewidth wavelength-tunable laser source with master oscillator power amplifier structure is demonstrated, which yielded CW output power of 4.5 W with spectral linewidth of 0.3 pm and mode-hop free tuning ...
Hao Wu, Hangyu Peng, Jun Zhang, Jinlong Zhang, Hongbo Zhu, Yongqiang Ning   +5 more
doaj   +1 more source

Single-Longitudinal Mode Ytterbium-Doped Fiber Laser with Ultra-Narrow Linewidth and High OSNR Using a Double-Ring Passive Subcavity

Photonics, 2023
A continuous wave (CW) ultra-narrow linewidth single-longitudinal mode (SLM) ytterbium-doped fiber laser (YDFL) based on narrowband fiber Bragg grating (NB-FBG) and double-ring passive subcavity (DR-PS) was studied.
Han Wen, Yaqi Zhai, Baole Lu, Haowei Chen   +3 more
doaj   +1 more source

Tunable Narrow-Linewidth Si₃N₄ Cascaded Triple-Ring External-Cavity Semiconductor Laser for Coherent Optical Communications

Photonics
We propose an external-cavity laser that combines wide tunability with narrow linewidth. The design utilizes a low-loss Si3N4 waveguide and a thermally tuned cascaded triple-ring resonator to enable continuous wavelength tuning. The numerical simulations
Tong Wang, Yuchen Hu, Wen Zhou, Ye Wang
doaj   +1 more source

Tunable Narrow-Linewidth Ring Laser Based on the Polarization Conversion in a Tapered Fiber-Coupled Whispering Gallery Mode Resonator

Crystals, 2021
Based on the polarization conversion in a tapered fiber-coupled whispering gallery mode (WGM) system, a simple-structured narrow linewidth band-pass filter was fabricated and a narrow linewidth ring laser was demonstrated. With a fiber Bragg grating (FBG)
Pengfa Chang, Chen Wang, Hong Han, Feng Gao, Ligang Huang, Anbang Wang   +5 more
doaj   +1 more source

Subwavelength-grating coupled-cavity resonance VCSELs with ultra-narrow linewidth

APL Photonics
Vertical-cavity surface-emitting lasers (VCSELs) characterized by compactness, high stability, and narrow linewidths are of significant interest for miniature atomic sensing applications.
Li-shan Fu, Ning Cui, Feng Zhang, Ji-sheng Wang, Ao Qiu, Bao-lu Guan, Ai-Qun Liu   +6 more
doaj   +1 more source

2.58 kW Narrow Linewidth Fiber Laser Based on a Compact Structure with a Chirped and Tilted Fiber Bragg Grating for Raman Suppression

Photonics, 2021
We report a high power, narrow linewidth fiber laser based on oscillator one-stage power amplification configuration. A fiber oscillator with a center wavelength of 1080 nm is used as the seed, which is based on a high reflection fiber Bragg grating (FBG)
Xin Tian, Chenhui Gao, Chongwei Wang, Xiaofan Zhao, Meng Wang, Xiaoming Xi, Zefeng Wang   +6 more
doaj   +1 more source

PULSED KGd(WO4)2 RAMAN LASER: TOWARDS EMISSION LINEWIDTH NARROWING

Приборы и методы измерений, 2015
The linewidth of a KGd(WO4)2 pulsed Raman laser is analysed experimentally for different configurations of the Raman and pump resonators: with narrow and broadband pump emission profiles, with and without linewidth narrowing elements in the Raman laser ...
V. G. Savitski
doaj  

Pump-induced stimulated superradiant Smith-Purcell radiation with ultra-narrow linewidth

eLight
Lasers with the gain medium of gas, liquid, semiconductor, and solid could generate coherent light with rather narrow spectral linewidth, which play an important role in the fields of communication, measurement, sensing, and so on. Although free electron
Yuechai Lin, Jinyu Li, Fang Liu, Weisi Meng, Pan Pan, Hanqi Feng, Wei Zhang, Xue Feng, Kaiyu Cui, Jinjun Feng, Yidong Huang   +10 more
doaj   +1 more source