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物理学报. 2001, 50(8): 1492-1495.
doi: 10.7498/aps.50.1492.
三共振准相位匹配光学参量振荡器反射抽运场的正交位相压缩
- 收稿日期: 2001-01-14
- 刊出日期: 2001-04-05
摘要: 利用全固化单频Nd∶YVO4激光器抽运由periodically poled lithium niobate(PPLN)准相位匹配晶体组成的光学参量振荡器,通过调节晶体的温度,在信号模与闲置模近简并的情况下,完成了抽运场与两个亚谐波模在腔内同时共振,实现了光学参量振荡器的极低阈值运转(阈值为1.2mW);当抽运功率为阈值抽运功率的2.8倍时,观察到反射抽运光的正交位相压缩,压缩度达1.1dB.数值计算与实验结果一致
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关键词:
- 准相位匹配光学参量振荡器 /
- 正交位相压缩 /
- 级联非线性过程
English Abstract
QUADRATURE PHASE-SQUEEZING OF PUMP FIELD REFLECTED FROM TRIPLY RESONANT QUASI-PHASE-MATCHED OPTICAL PARAMETRIC OSCILLATOR
- Received Date:
14 January 2001
- Published Online:
05 April 2001
Abstract: A quasi- phase-matched optical parametric oscillator(QPM OPO)consisting of a periodically poled LiNbO3(PPLN) crystal is pumped by an all-solid state single frequency Nd:YVO4 laser. The triple resonance of the pump mode and two subharmonic modes with near- degenerate frequencies are experimentally demonstrated by means of precision temperature control of the crystal. The threshold pump power is only 1.2mW. The quadrature phase noise squeezing of the pump field reflected from the OPO up to 1.1dB is observed at the pump power of 2.8 times of the oscillation threshold. The numerically calculated result is in good agreement with the experimentally measured data.
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