Laser Difference-Frequency Generation in the Mid-Infrared and Applications to High-Resolution Molecular Spectroscopy and Trace Gas Detection

Author

Chen, Weidong ; Cousin, Julien ; Poullet, Emmanuelle ; Boucher, Daniel ; Gao, Xiaoming ; Sigrist, Markus W. ; Tittel, Frank K.

Author_Institution

Univ. du Littoral Cote d´´Opale, Dunkerque

fYear

2006

fDate

18-22 Sept. 2006

Firstpage

583

Lastpage

583

Abstract

We report on the development of a widely tunable continuous-wave (CW) laser spectrometer based on difference-frequency generation (DFG) in a nonlinear optical crystal, which operates in the mid-infrared (MIR) spectral region of 3-20 mum with a Doppler linewidth limited spectral resolution. The state-of-the-art of CW DFG techniques as well as the applications of the DFG-based laser source to high-resolution molecular spectroscopy and trace gas spectroscopy were presented.

Keywords

infrared sources; infrared spectroscopy; laser tuning; measurement by laser beam; optical frequency conversion; optical materials; spectral line breadth; spectrochemical analysis; CW DFG techniques; DFG-based laser source; Doppler linewidth limited spectral resolution; high-resolution molecular spectroscopy; laser difference-frequency generation; nonlinear optical crystal; trace gas detection; trace gas spectroscopy; tunable continuous-wave laser spectrometer; wavelength 3 micron to 20 micron; Biomedical optical imaging; Chemical lasers; Gas lasers; Infrared spectra; Laser theory; Nonlinear optics; Optical mixing; Optical sensors; Spectroscopy; Tunable circuits and devices;

fLanguage

English

Publisher

ieee

Conference_Titel

Infrared Millimeter Waves and 14th International Conference on Teraherz Electronics, 2006. IRMMW-THz 2006. Joint 31st International Conference on

Conference_Location

Shanghai

Print_ISBN

1-4244-0400-2

Electronic_ISBN

1-4244-0400-2

Type

conf

DOI

10.1109/ICIMW.2006.368790

Filename

4222524