Public Data Resource

Frequency stabilization of a quantum cascade laser by weak resonant feedback from a Fabry-Perot cavity

Description

Data from peer-reviewed publication: G. Zhao et al., Frequency stabilization of a quantum cascade laser by weak resonant feedback from a Fabry-Perot cavity, Optics Letters

Frequency-stabilized mid-infrared lasers are valuable tools for precision molecular spectroscopy. However, their implementation remains limited by complicated stabilization schemes. Here we achieve optical self-locking of a quantum cascade laser to the resonant leak-out field of a highly mode-matched two-mirror cavity. The result is a simple approach to achieving ultra-pure frequencies from high-powered mid-infrared lasers. For short time scales (<0.1 ms), we report a linewidth reduction factor of 3×10^(-6) to a linewidth of 12 Hz. Furthermore, we demonstrate two-photon cavity-enhanced absorption spectroscopy of an N2O overtone transition near a wavelength of 4.53 um.
Research Topics: Chemistry: Analytical chemistry , Environment: Greenhouse gas measurements , Metrology:Optical, photometry, and laser metrology , Physics: Spectroscopy    
Subject Keywords: laser stabilization, diode lasers, quantum cascade lasers, laser metrology, optical resonators, two-photon absorption, greenhouse gases, nitrous oxide, oceans, ph, marine mammals, remote sensing, seabirds, Environment and Climate    

Data Access


These data are public.
Files

Loading file list...