Dual-comb spectroscopy based on quantum cascade laser frequency combs
Authors: Villares G., Cappelli F., Hugi A., Blaser S., Faist J.
Autors Affiliation: Institute for Quantum Electronics, ETH Zurich, Switzerland; CNR-INO, Istituto Nazionale di Ottica, LENS -European Laboratory for Non-Linear Spectroscopy, Via Nello Carrara 1, Sesto Fiorentino FI, 50019, Italy; IRsweep GmbH, Burgstrasse 20, Zurich, CH-8037, Switzerland; Alpes Lasers SA, 1-3 Max.-de-Meuron, Neuchâtel, CH-2000, Switzerland
Abstract: Mid-infrared dual-comb spectroscopy by means of quantum cascade laser frequency combs is demonstrated. Broadband high resolution molecular spectroscopy is performed, showing the potential of quantum cascade laser combs as a compact, all solid-state, chemical sensor.
KeyWords: Broadband communication; Frequency measurement; Lenses; Optical mixing; Quantum cascade lasers; Semiconductor device measurement; Spectroscopy