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

Year: 2000

Authors: Mazzotti D., De Natale P., Giusfredi G., Fort C., Mitchell J.A., Hollberg L.W.

Autors Affiliation: Istituto Nazionale di Ottica (INO)
Department of Physics, University of Firenze
European Laboratory for Non-linear Spectroscopy (LENS)
Istituto Nazionale di Fisica della Materia (INFM)
National Institute of Standards and Technology (NIST)

Abstract: We report difference-frequency generation (DFG) in periodically poled lithium niobate (PPLN) around 4.25 mu m using a cw Nd:YAG and an injection-locked 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 the theoretical limit is obtained. Detection of CO2 absorption spectra is demonstrated and further improvements and applications to high sensitivity spectroscopy are discussed.


Volume: 70 (6)      Pages from: 747  to: 750

KeyWords: Trace-gas-detection; Diode-laser; Wavelength; Amplifier; Power; Fiber
DOI: 10.1007/s003400000263

Citations: 32
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