首页》回顾》金属结构件的高性能快速响应激光修复技术

High-power stable continuous-wave single-frequency Nd:YVO4 lasers

演讲课题:High-power stable continuous-wave single-frequency Nd:YVO4 lasers

演讲人:张宽收Kuanshou Zhang

演讲摘要:

Solid state continuous wave (cw) single-frequency lasers have attracted great interest due to their excellent properties of high output power, low noise and good beam quality. This kind of laseris widely used in a variety of application fields, such as cold atom physics, precise measurements, quantum optics, and so on. To suppress the mode hopping or multi-longitudinal-mode operation at a high pump power and obtain high power stable single-frequency lasers,a universal model about the sufficient condition of stable single-frequency operation is established and applied to the theoretical analysis of a high power unidirectional ring Nd:YVO4 laser at 1342 nm with energy transfer up conversion and excited stimulated absorption taken into account. After the influences of the LBO temperature and output transmission on the output characteristics and the single-frequency operation region of the laser were experimentally studied at a pump power of 50 W, a stable continuous-wave single-frequency laser with 1342 nm power of 11.3 W and 671 nm power of 0.3 W is fabricated by optimizing the transmission of output coupler and the temperature of LiB3O5 crystal. Mode-hopping-free laser operation with a power stability better than ±0.5% and a frequency fluctuation less than ±88 MHz is achieved during a given three hours. Consequently, the theoretical model can be employed as a useful tool for the design of the high power single-frequency lasers.

张宽收Kuanshou Zhang

Institute of Opto-Electronics, Shanxi University

Professional Experience:

09/2000-present: Professor, Institute of Opto-electronics,Shanxi University

10/2001-06/2012: Director, State Key Laboratory of Quantum Optics and Quantum Optics Devices

10/1998-06/2002:   Visiting Scholar, Laboratoire Kastler-Brossel, University Pierre et Marie Curie, French

06/1997-08/2000:   Associate Professor, Institute of Opto-electronics,Shanxi University

08/1987-05/1997:    Lectuer, Institute of Opto-electronics,Shanxi University

 

Education:

Ph.D., (Physics) University Pierre et Marie Curie, France 2002.Advisor: Claude Fabre

Ph.D., (Physics) Shanxi University,China 1997.Advisor:Kunchi Peng

M.S., (Physics)Shanxi University,China1994.Advisor:Kunchi Peng

B.S., (Physics) Fudan University,China 1987

 

Scientific activities

Field: Quantum Optics; Laser Technology; Nonlinear Optics.

Over 100 publications in peer-referred journals.

 

Honors and Awards

The Prize in Science &Technological of Shanxi Province (Second class), 2016

The Prize in Technological Invention of Shanxi Province (First class), 2011

Excellent Scientist of the Education Ministry of China, 2006

Special Subsidy by the State Council of China, 2004

The WuYi Medal ofShanxiProvince, 2003

The National Prize in Technological Invention of China (Second class), 2002

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