Dr. Yunfeng Qi Profile

Dr. Yunfeng Qi

at Shanghai Institute of Optics and Fine Mechanics

SPIE Involvement:

Author

Publications (8)

Proceedings Article | 18 March 2024 Paper

A monolithic 2042nm hybrid pumped gain-switched thulium-doped fiber laser

Junjie Ren, Yunfeng Qi, Zhenxing He, Ting Yu, Xisheng Ye

Proceedings Volume 13104, 131042Z (2024) https://doi.org/10.1117/12.3023284

KEYWORDS: Pulsed laser operation, Pulse signals, Laser resonators, Fiber lasers, Continuous wave operation, Signal to noise ratio, Resonators, Fiber Bragg gratings, Energy efficiency, Gain switching, Nanosecond lasers

Read Abstract +

SPIE Journal Paper | 4 March 2024

Wavelength selective bending sensitive multi-ring fiber for suppressing stimulated Raman scattering

Dongyu He, Meisong Liao, Tianxing Wang, Shizi Yu, Lili Hu, Shubin Chen, Chunlei Yu, Yunfeng Qi, Junqing Meng, Weibiao Chen, Weiqing Gao

OE, Vol. 63, Issue 03, 036101, (March 2024) https://doi.org/10.1117/12.10.1117/1.OE.63.3.036101

KEYWORDS: Signal attenuation, Raman spectroscopy, Raman scattering, Refractive index, Cladding, Optical engineering, Step index fibers, Frequency modulation, Fermium, Laser scattering

Read Abstract +

Proceedings Article | 29 March 2019 Paper

Experimental study on the influence of backward ASE on SBS process in single-frequency amplifier

Xuewen Li, Zhao Quan, Hui Shen, Qiurui Li, Yunfeng Qi, Bing He

Proceedings Volume 11046, 110460E (2019) https://doi.org/10.1117/12.2524407

KEYWORDS: Optical amplifiers, Fiber amplifiers, Fiber lasers, Scattering, Superluminescent sources, Laser scattering, Signal processing, Oscillators, High power fiber amplifiers, Backscatter

Read Abstract +

Proceedings Article | 24 October 2017 Paper

Suppression of high order modes employing active self-imaging mode filter in large mode area strongly pumped fiber amplifier

Xiang Zhao, Gang Bai, Ye Zheng, Xiaolong Chen, Yifeng Yang, Yunfeng Qi, Bing He, Jun Zhou

Proceedings Volume 10457, 104572Q (2017) https://doi.org/10.1117/12.2284934

Read Abstract +

Proceedings Article | 4 May 2015 Paper

Mode controlling study on narrow-linewidth and high power all-fiber amplifier

Min Lei, Yunfeng Qi, Chi Liu, Yifeng Yang, Ye Zheng, Jun Zhou

Proceedings Volume 9543, 95431L (2015) https://doi.org/10.1117/12.2181497

KEYWORDS: Amplifiers, High power lasers, Charge-coupled devices, Optical amplifiers, High power fiber amplifiers, Fiber amplifiers, Fiber lasers, Laser damage threshold, Fiber Bragg gratings, Continuous wave operation

Read Abstract +

Proceedings Article | 29 November 2012 Paper

Coherent beam combination of seven high power fiber amplifiers with an all-optical feedback loop

Houkang Liu, Bing He, Jun Zhou, Chi Liu, Liyun Hao, Shoujun Dai, Yunfeng Qi, Xiaolong Chen

Proceedings Volume 8551, 85510P (2012) https://doi.org/10.1117/12.999551

KEYWORDS: Feedback loops, Coherent beam combination, Fiber amplifiers, Optical amplifiers, Amplifiers, Mode locking, Fiber lasers, High power fiber amplifiers, Visibility, Beam splitters

Read Abstract +

Proceedings Article | 20 August 2011 Paper

High power single frequency linear-polarized all-fiber MOPA system for coherent detection

Ya-qian Ding, Yun-feng Qi, Chi Liu, Jing He, Jun Zhou

Proceedings Volume 8192, 81922O (2011) https://doi.org/10.1117/12.900734

KEYWORDS: Optical amplifiers, Amplifiers, Fiber lasers, Fiber amplifiers, Signal to noise ratio, Semiconductor lasers, Cladding, High power fiber amplifiers, Optical isolators, Phase modulation

Read Abstract +

Proceedings Article | 17 April 2006 Paper

184W diode-side-pumped ceramic Nd:YAG laser with a diffusive optical pump cavity

Jun Zhou, Qihong Lou, Sungman Lee, Yunfeng Qi

Proceedings Volume 6190, 619005 (2006) https://doi.org/10.1117/12.661666

KEYWORDS: Ceramics, Nd:YAG lasers, Crystals, Neodymium, Laser development, Birefringence, Optical resonators, Laser crystals, High power lasers, Diodes

Read Abstract +

Showing 5 of 8 publications

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Keywords/Phrases

Search In:

Publication Years