检索结果-南通市图书馆

2-kW-level superfluorescent fiber source with flexible wavelength and linewidth tunable characteristics

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

High Power Laser Science and Engineering 2021年第4期9卷 93-102页

作者： Jun Ye Chenchen Fan Jiangming Xu Hu Xiao Jinyong Leng Pu Zhou College of Advanced Interdisciplinary Studies National University of Defense TechnologyChangsha 410073China

The superfluorescent fiber source(SFS)with tunable optical spectrum has shown great application potential in the sensing,imaging,and spectral ***,we demonstrate for the first time a 2-kW-level wavelength and linewidth tunable *** on a flexible filtered SFS seed and three stages of fiber amplifiers,the output power can be scaled from the milliwatt level to about 2 kW,with a wavelength tuning range of 1068–1092 nm and a linewidth tuning range of 2.5–9.7 ***,a numerical simulation is conducted based on the generalized nonlinear Schr?dinger equation,and the results reveal that the wavelength tuning range is limited by the decrease of seed power and the growth of amplified spontaneous emission,whereas the linewidth tuning range is determined by the gain competition and nonlinear Kerr *** developed wavelength and linewidth tunable SFS may be applied to scientific research and industrial processing.

关键词： fiber amplifiers high power superfluorescent fiber source tunable lasers

1.65μm square-FP coupled cavity semiconductor laser for methane gas detection

在线全文

学校读者我要写书评

暂无评论

Chinese Optics Letters 2022年第6期20卷 30-34页

作者： Yingrun Fan Jinlong Xiao Zhengzheng Shen Youzeng Hao Jiachen Liu Ke Yang Yuede Yang Yongzhen Huang School of Microelectronics University of Chinese Academy of SciencesBejing 100049China State Key Laboratory of Integrated Optoelectronics Institute of SemiconductorsChinese Academy of SciencesBejing 100083China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBejjing 100049China

We report a 1.65μm square-Fabry–Pérot[FP]coupled cavity semiconductor laser for methane gas *** laser output optical power can reach 7.4 m W with the side mode suppression ratio about 40 d *** wavelength tuning range is 2 nm by adjusting the FP cavity injection current,covering the methane absorption line at 1653.72 *** lasing wavelength can also be tuned by adjusting the square microcavity injection current or temperature,*** gas detection is successfully demonstrated utilizing this laser.

关键词： coupled cavity lasers tunable lasers tunable diode laser absorption spectroscopy methane gas detection

A Wavelength tunable DBR Laser Integrated with an Electro-Absorption Modulator by a Combined Method of SAG and QWI

在线全文

学校读者我要写书评

暂无评论

Journal of Semiconductors 2005年第11期26卷 2053-2057页

作者：张靖李宝霞赵玲娟王保军周帆朱洪亮边静王圩中国科学院半导体研究所光电子技术国家研究中心北京100083

We report a wavelength tunable electro-absorption modulated DBR laser based on a combined method of SAG and QWI. The threshold current is 37mA and the output power at 100mA gain current is 3.5mW. When coupled to a single-mode fiber with a coupling efficiency of 15% ,more than a 20dB extinction ratio is observed over the change of EAM bias from 0 to -2V. The 4.4nm continuous wavelength tuning range covers 6 channels on a 100GHz grid for WDM telecommunications.

关键词： tunable lasers distributed Bragg reflector lasers electroabsorption modulator quantum-well intermi-xing selective area growth

What are Exciting in Laser Science

在线全文

学校读者我要写书评

暂无评论

Tsinghua Science and Technology 1998年第1期3卷 14-26页

作者： Yuen Ron Shen Department of Physics, University of California Materials Sciences Division Lawrence Berkeley National Laboratory Berkeley, CA 94720, USA Department of Physics University of California Materials Sciences Division Lawrence Berkeley National Laboratory Berkeley CA 94720 USA

Recent advances in selected areas of laser science are briefly reviewed. They include laser technology, coherent control of quantum systems by lasers, X ray generation by ultrashort high intensity laser pulses, and ... 详细信息

关键词： laser science coherent control coherent excitation dark state laser technology tunable lasers X ray generation femtosecond pulses high intensity laser excitation high order harmonic generation surface nonlinear optical spectroscopy surface c

Picosecond Self-modelocked Wavelength tunable Ti:Al2O3 Laser

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of lasers 1997年第5期 385-390页

作者： WANG Zhenglin WANG Peilin GUO Qiang WANG Jin ZHAN Jie CHENG Chanfgshui SONG Zhihong (Anhui Institute of Optics & Fine Mechanics, Chinese Academy of Sciences,P. O. Box 1125, Hefei 230031, China)

The characteristics of a wavelength tunable, picosecond self-modelocked Ti:Al2O3 laser, pumped by a frequency-doubled modelocked Nd:YAG laser, are studied experimentally. A stable self-modelocked pulse train of 29ps pulse duration(FWHM) is obtained. The output peak power is more than 20 MW and the maximum laser-to-laser conversion efficiency is of 32.5% at 790nm, with the energy instability less than 4%.The output wavelength can tune continuously in the range of 680-980nm and extended to 350-480 nm by using a BBO crystal as second harmonic generation element.

关键词： self-modelocking Ti:Al2O3 laser Kerr lens effect tunable lasers