Peltola Jari, Vainio Markku, Fordell Thomas, Hieta Tuomas, Merimaa Mikko, Halonen Lauri
Opt Express. 2014 Dec 29;22(26):32429-39. doi: 10.1364/OE.22.032429.
We report on a tunable continuous-wave mid-infrared optical parametric oscillator (OPO), which is locked to a fully stabilized near-infrared optical frequency comb using a frequency doubling scheme. The OPO is used for 40 GHz mode-hop-free, frequency-comb-locked scans in the wavelength region between 2.7 and 3.4 μm. We demonstrate the applicability of the method to high-precision cavity-ring-down spectroscopy of nitrous oxide (NO) and water (HO) at 2.85 µm and of methane (CH) at 3.2 μm.
我们报道了一种可调谐连续波中红外光学参量振荡器（OPO），它通过倍频方案锁定到一个完全稳定的近红外光学频率梳上。该OPO用于在2.7至3.4μm波长区域内进行40GHz无模式跳变、频率梳锁定扫描。我们证明了该方法适用于在2.85μm处对一氧化二氮（NO）和水（HO）以及在3.2μm处对甲烷（CH）进行高精度腔衰荡光谱分析。
