Difference-frequency generation in PPLN at 4.25 mu m: an analysis of sensitivity limits for DFG spectrometers

Authors
Mazzotti, D De Natale, P Giusfredi, G Fort, C Mitchell, JA Hollberg, LW
Citation
D. Mazzotti et al., Difference-frequency generation in PPLN at 4.25 mu m: an analysis of sensitivity limits for DFG spectrometers, APP PHYS B, 70(6), 2000, pp. 747-750
Citations number
14
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
APPLIED PHYSICS B-LASERS AND OPTICS
ISSN journal
09462171 → ACNP
Volume
70
Issue
6
Year of publication
2000
Pages
747 - 750
Database
ISI
SICI code
0946-2171(200006)70:6<747:DGIPA4>2.0.ZU;2-Y
Abstract
We report difference-frequency generation (DFG) in periodically poled lithi um niobate (PPLN) around 4.25 mu m using a cw Nd:YAG and an injection-locke d diode laser. This system provides a narrow linewidth source at 4.25 mu m with near-shot-noise-limited operation. A conversion efficiency close to th e theoretical limit is obtained. Detection of CO2 absorption spectra is dem onstrated and further improvements and applications to high sensitivity spe ctroscopy are discussed.