Chinese Optics Letters, 2009, 7 (11): 1038, Published Online: Nov. 11, 2009  

Widely continuous-tunable 2.789 4.957 \mu m twin MgO:PPLN cascaded optical parametric oscillator Download: 704次

Author Affiliations
1 College of Optoelectronic Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
2 Shenzhen Key Laboratory of Laser Engineering, Shenzhen University, Shenzhen 518060, China
Abstract
An all-solid-state mid-infrared optical parametric oscillator with wide tunability by using two identical multi-grating periodically poled 5-mol.-% MgO-doped lithium niobate cascaded is reported. The pump laser is an acousto-optically Q-switched Nd:YAG laser with 150-ns pulse width at repetition rate of 10 kHz. Wide tunability from 2.789 to 4.957 \mu m at the idler wavelength is achieved by varying the temperature from 40 to 200 ℃ and translating the grating periods from 26 to 31 \mu m with a step of 0.5 \mu m. When the incident pump average power is 8.15 W, the maximum idler output average power is 2.23 W at 3.344 \mu m and the optic-optic conversion efficiency is about 27.4%.

Linzhong Xia, Hong Su, Shuangchen Ruan. Widely continuous-tunable 2.789 4.957 \mu m twin MgO:PPLN cascaded optical parametric oscillator[J]. Chinese Optics Letters, 2009, 7(11): 1038.

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