CO2 的光谱饱和度和 2.77μm 光参量振荡器的频率稳定化。

Saturation spectroscopy of CO2 and frequency stabilization of an optical parametric oscillator at 2.77 μm.

机构信息

Institute of Photonic Technologies, National Tsing Hua University, Hsinchu 30013, Taiwan.

出版信息

Opt Lett. 2012 Jun 15;37(12):2409-11. doi: 10.1364/OL.37.002409.

DOI:10.1364/OL.37.002409

Abstract

We report the frequency stabilization of a CW single-frequency, singly resonant optical parametric oscillator (OPO) to the saturation absorption center of the (12)C(16)O210°1,02°1>←00°0 P(14) line at 2.77 μm. The CO2 molecules were excited by the OPO idler wave, and the absorption signal was monitored through the fluorescence at 4.3 μm using a gold-coated longitudinal cell. The idler frequency was stabilized onto the line center by wavelength modulation method. The linewidth of the saturation dip was estimated to be 4.7 MHz, and the achieved frequency stability was 3.9 kHz (3.6×10(-11)).

摘要

我们报告了连续波单频、单共振光学参量振荡器（OPO）到（12）C（16）O2[10°1,02°1]（II）>←00°0 P（14）线在 2.77 μm 处的饱和吸收中心的频率稳定化。CO2 分子被 OPO 闲频波激发，并且通过使用镀金纵向池在 4.3 μm 处的荧光监测吸收信号。通过波长调制法将闲频稳定在谱线中心。饱和凹陷的线宽估计为 4.7 MHz，实现的频率稳定性为 3.9 kHz（3.6×10(-11)）。