Title :
Comb-assisted swept laser spectroscopy with a mode-hop-free tunable external cavity QCL
Author :
Knabe, Kevin ; Giorgetta, Fabrizio R. ; Armacost, Chris M. ; Radunsky, Michael B. ; Crivello, Sam ; Day, Timothy ; Williams, Paul A. ; Newbury, Nathan R.
Author_Institution :
Quantum Electron. & Photonics Div., Nat. Inst. of Stand. & Technol., Boulder, CO, USA
Abstract :
We demonstrate sub-MHz spectral resolution of N2O absorption spectra acquired with a swept external-cavity quantum cascade laser (QCL) over 0.87 THz. The QCL frequency is monitored by sum-frequency generation with an optical fiber frequency comb.
Keywords :
laser cavity resonators; nitrogen compounds; optical fibres; optical frequency conversion; quantum cascade lasers; N2O; absorption spectra; comb-assisted swept laser spectroscopy; mode-hop-free tunable external cavity QCL; optical fiber frequency comb; sub-MHz spectral resolution; sum-frequency generation; swept external-cavity quantum cascade laser; Absorption; Distortion measurement; Frequency measurement; Optical distortion; Optical fibers; Quantum cascade lasers; Spectroscopy;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2012 Conference on
Conference_Location :
San Jose, CA
Print_ISBN :
978-1-4673-1839-6
