Open AccessHigh-resolution, broadly-tunable mid-IR spectroscopy using a continuous wave optical parametric oscillator
Author(s) -
David B. Foote,
Matthew J. Cich,
Walter C. Hurlbut,
Ulrich Eismann,
Adam T. Heiniger,
Chris Haimberger
Publication year - 2021
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.418287
Subject(s) - hitran , optical parametric oscillator , optics , continuous wave , spectroscopy , materials science , absorption spectroscopy , parametric statistics , cavity ring down spectroscopy , infrared , laser , physics , statistics , mathematics , quantum mechanics
We report on the design and automation of a mid-infrared, continuous wave, singly-resonant optical parametric oscillator. Hands-free controls and the implementation of a tuning algorithm allowed for hundreds of nanometers of continuous, effective-mode-hop-free tuning over the range of 2190-4000 nm. To demonstrate the applicability of this light source and algorithm to mid-IR spectroscopy, we performed a sample spectroscopy measurement in a C 2 H 2 gas cell and compared the experimentally-measured absorption spectrum to HITRAN 2016 simulations. We found excellent agreement with simulation in both peak heights and peak centers; we also report a reduced uncertainty in peak centers compared to simulation.