We discuss recent advances in the stabilization and application of femtosecond frequency combs based on optical parametric oscillators (OPOs) pumped by femtosecond lasers at 800 and 1060 nm. A method for locking to zero the carrier-envelope-offset of a Ti:sapphire-pumped OPO comb is described. The application of Yb:KYW-laser-pumped dual-combs for mid-infrared spectroscopy is detailed, specifically methane spectroscopy at approximately a 0.7% concentration at 1 atm.

Date Published: 14 August 2014
PDF: 7 pages
Opt. Eng. 53(12) 122605 doi: 10.1117/1.OE.53.12.122605
Published in: Optical Engineering Volume 53, Issue 12