Low noise, continuous-wave single-frequency 1.5-μm laser generated by a singly resonant optical parametric oscillator

doi:10.1088/1674-1056/20/11/114215

Abstract We report a low noise continuous-wave (CW) single-frequency 1.5-μm laser source obtained by a singly resonant optical parametric oscillator (SRO) based on periodically poled lithium niobate (PPLN). The SRO was pumped by a CW single-frequency Nd:YVO₄ laser at 1.06 μm. The 1.02 W of CW single-frequency signal laser at 1.5 μm was obtained at pump power of 6 W. At the output power of around 0.75 W, the power stability was better than ±1.5% and no mode-hopping was observed in 30 min and frequency stability was better than 8.5 MHz in 1 min. The signal wavelength could be tuned from 1.57 to 1.59 μm by varying the PPLN temperature. The 1.5-μm laser exhibits low noise characteristics, the intensity noise of the laser reaches the shot noise limit (SNL) at an analysis frequency of 4 MHz and the phase noise is less than 1 dB above the SNL at analysis frequencies above 10 MHz.

Keywords: singly resonant optical parametric oscillator 1.5-μm laser single-frequency operation low noise

Received: 09 February 2011
Revised: 04 May 2011
Accepted manuscript online:

PACS:	42.65.Yj	(Optical parametric oscillators and amplifiers)
	42.60.Mi	(Dynamical laser instabilities; noisy laser behavior)
	42.72.Ai	(Infrared sources)

Fund: Project supported by the National Natural Science Foundation of China (Grant No. 60878003), the Science Fund for Excellent Research Team of the National Natural Science Foundation of China (Grant No. 60821004), and the National Basic Research Program of China (Grant No. 2010CB923101).

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Liu Jian-Li(刘建丽), Liu Qin(刘勤), Li Hong(李宏), Li Peng(李鹏), and Zhang Kuan-Shou(张宽收) Low noise, continuous-wave single-frequency 1.5-μm laser generated by a singly resonant optical parametric oscillator 2011 Chin. Phys. B 20 114215

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Low noise, continuous-wave single-frequency 1.5-μm laser generated by a singly resonant optical parametric oscillator

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