3 papers
physics.ins-det2018
High resolution ultra-sensitive trace gas detection by use of cavity-position-modulated sub-Doppler NICE-OHMS - Application to detection of acetylene in human breath
Gang Zhao, Thomas Hausmaninger, Florian M. Schmidt +2
A sensitive high resolution sub-Doppler detecting spectrometer, based on noise-immune cavity-enhanced optical heterodyne molecular spectrometry (NICE-OHMS), for trace gas detection…
physics.optics2018
Broadband calibration-free cavity-enhanced complex refractive index spectroscopy using a frequency comb
Alexandra C. Johansson, Lucile Rutkowski, Anna Filipsson +4
We present broadband cavity-enhanced complex refractive index spectroscopy (CE-CRIS), a technique for calibration-free determination of the complex refractive index of entire molec…
physics.ins-det2017
Sensitive and broadband measurement of dispersion in a cavity using a Fourier transform spectrometer with kHz resolution
Lucile Rutkowski, Alexandra C. Johansson, Gang Zhao +4
Optical cavities provide high sensitivity to dispersion since their resonance frequencies depend on the index of refraction. We present a direct, broadband, and accurate measuremen…