Infrared and Laser Engineering, Volume. 45, Issue 11, 1105001(2016)

1.35 GHz linearly tunable single-frequency Nd:YVO4 laser

Xu Xinrui*, Fan Rongwei, Chen Zhaodong, and Chen Deying
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    The investigation on 808 nm CW laser-diode pumped all solid-state linearly tunable Nd:YVO4 laser was conducted in this paper. By utilizing methods of short cavity, inclined thin etalon and frequency stabilization including gain medium temperature control, mechanical vibration damping of the laser base and aerial isolation of external turbulence and noises, single frequency laser output at 1 064 nm was achieved with a maximum output power of 140 mW. Frequency characteristics was monitored by a Fabry-Perot interferometer and beam density distribution was also scanned, beam quality M2 was measured to be about 1.05 by knife technique. Electro-optical RTP crystal was fixed in the cavity and connected to a high power source, which allowed cavity length modulation by linear electro-optical effect. During the cavity length tuning process, mode hops were avoided by the real time angle tilting of the thin etalon. Frequency tuning range of the 1 064 nm laser reaches 1.35 GHz. Programed saw-tooth with a 2 200 V amplitude was further applied on the RTP and a 20 Hz periodical linear frequency tuning laser with an average power of 85 mW was obtained.

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    Xu Xinrui, Fan Rongwei, Chen Zhaodong, Chen Deying. 1.35 GHz linearly tunable single-frequency Nd:YVO4 laser[J]. Infrared and Laser Engineering, 2016, 45(11): 1105001

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    Paper Information

    Category: 激光器技术

    Received: Mar. 5, 2016

    Accepted: Apr. 3, 2016

    Published Online: Jan. 20, 2017

    The Author Email: Xinrui Xu (xuxinruihit@163.com)

    DOI:10.3788/irla201645.1105001

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