Abstract
We present a versatile mid-infrared frequency comb spectroscopy system based on a doubly resonant optical parametric oscillator tunable in the 3–5.4 μm range and two detection methods: a Fourier transform spectrometer (FTS) and a continuous-filtering Vernier spectrometer (CF-VS). Using the FTS with a multipass cell, we measure high precision broadband absorption spectra of at 3.3 μm and NO at 5.25 μm, the latter for the first time with comb spectroscopy, and we detect atmospheric species (, CO, , and ) in air in the signal and idler ranges. Multiline fitting yields minimum detectable concentrations of for , NO, and CO. For the first time in the mid-infrared, we perform CF-VS using an enhancement cavity, a grating, and a single detector, and we measure the absorption spectrum of and in ambient air at , reaching a 40 ppb concentration detection limit for in 2 ms.
© 2016 Optical Society of America
Full Article | PDF ArticleMore Like This
Juho Karhu, Teemu Tomberg, Francisco Senna Vieira, Guillaume Genoud, Vesa Hänninen, Markku Vainio, Markus Metsälä, Tuomas Hieta, Steven Bell, and Lauri Halonen
Opt. Lett. 44(5) 1142-1145 (2019)
Thomas Werblinski, Bastian Lämmlein, Franz J. T. Huber, Lars Zigan, and Stefan Will
Opt. Lett. 41(10) 2322-2325 (2016)
Luke Maidment, Peter G. Schunemann, and Derryck T. Reid
Opt. Lett. 41(18) 4261-4264 (2016)