Laser & Optoelectronics Progress, Volume. 54, Issue 10, 101403(2017)
Unstable Resonator Technique for Nd∶YAG Slab Gain Medium
An unstable resonator can obtain high extraction efficiency of light as well as high beam quality under the condition of the large Fresnel number. We design a telescopic off-axis metastable-unstable hybrid resonator with conduction-cooled end-pumped structure which can be used as the Nd∶YAG slab gain medium, and its output coupling mirror is a variable reflectivity mirror. The resonator in the width direction of the hybrid resonator (the x direction of the slab gain medium) is an unstable resonator, and the resonator in the thickness direction (the y direction of the slab gain medium) is a metastable resonator. Through the theoretical analysis, an output power of 4428.7 W of this metastable-unstable hybrid resonator structure and an optical-optical efficiency of 0.4429 can be obtained when the pump power is 10 kW.
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Lei Jian, Liu Yang, Li Tianqi, Li Bao, Wang Zhe, Tang Xiaojun. Unstable Resonator Technique for Nd∶YAG Slab Gain Medium[J]. Laser & Optoelectronics Progress, 2017, 54(10): 101403
Category: Lasers and Laser Optics
Received: Mar. 30, 2017
Accepted: --
Published Online: Oct. 9, 2017
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