3 papers
physics.optics2021
Frequency stabilization of a quantum cascade laser by weak resonant feedback from a Fabry-Pérot cavity
Gang Zhao, Jianfei Tian, Joseph T. Hodges +1
Frequency-stabilized mid-infrared lasers are valuable tools for precision molecular spectroscopy. However, their implementation remains limited by complicated stabilization schemes…
physics.ins-det2020
Precision Spectroscopy of Nitrous Oxide Isotopocules with a Cross-Dispersed Spectrometer and Mid-Infrared Frequency Comb
D. Michelle Bailey, Gang Zhao, Adam J. Fleisher
As a potent greenhouse gas and ozone depleting agent, nitrous oxide (NO) plays a critical role in the global climate. Effective mitigation relies on understanding global source…
physics.chem-ph2020
Doppler-Free Two-Photon Cavity Ring-Down Spectroscopy of a Nitrous Oxide (NO) Vibrational Overtone Transition
Gang Zhao, D. Michelle Bailey, Adam J. Fleisher +2
We report Doppler-free two-photon absorption of NO at = 4.53 m, measured by cavity ring-down spectroscopy. High power was achieved by optical self-locking of a quantum c…