Optimization of a midinfrared high-resolution difference-frequency laser spectrometer

A. H. Hielscher; C. E. Miller; D. C. Bayard; U. Simon; K. P. Smolka; R. F. Curl; F. K. Tittel

doi:10.1364/JOSAB.9.001962

Optimization of a midinfrared high-resolution difference-frequency laser spectrometer

A. H. Hielscher, C. E. Miller, D. C. Bayard, U. Simon, K. P. Smolka, R. F. Curl, F. K. Tittel

Biomedical Engineering

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Abstract

Improved performance of a continuous-wave (cw) laser spectrometer for Doppler-limited infrared spectroscopy of molecules based on difference-frequency generation (DFG) in AgGaS2 has been achieved. The spectrometer was configured to generate continuous scans of up to 1 cm^-1 from 1550 to 2100 cm^-1. An absolute precision of ˜6 × 10^-3 cm^-1 with a resolution of better than 1.0 MHz (3.3 × 10^-5 cm^-1) was achieved. Infrared powers of ˜20 μW were obtained by employing 90° Type I phase matching in a 45-mm-long AgGaS₂ crystal. The highresolution characteristics of the DFG spectrometer were evaluated by using H₂O and N₂O spectra. Preliminary infrared kinetic spctroscopy results involving the detection of transient CO radicals from 193-nm acetone photodissociation are also reported.

Original language	English (US)
Pages (from-to)	1962-1967
Number of pages	6
Journal	Journal of the Optical Society of America B: Optical Physics
Volume	9
Issue number	11
DOIs	https://doi.org/10.1364/JOSAB.9.001962
State	Published - Nov 1992

ASJC Scopus subject areas

Statistical and Nonlinear Physics
Atomic and Molecular Physics, and Optics

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title = "Optimization of a midinfrared high-resolution difference-frequency laser spectrometer",

abstract = "Improved performance of a continuous-wave (cw) laser spectrometer for Doppler-limited infrared spectroscopy of molecules based on difference-frequency generation (DFG) in AgGaS2 has been achieved. The spectrometer was configured to generate continuous scans of up to 1 cm-1 from 1550 to 2100 cm-1. An absolute precision of ˜6 × 10-3 cm-1 with a resolution of better than 1.0 MHz (3.3 × 10-5 cm-1) was achieved. Infrared powers of ˜20 μW were obtained by employing 90° Type I phase matching in a 45-mm-long AgGaS2 crystal. The highresolution characteristics of the DFG spectrometer were evaluated by using H2O and N2O spectra. Preliminary infrared kinetic spctroscopy results involving the detection of transient CO radicals from 193-nm acetone photodissociation are also reported.",

author = "Hielscher, {A. H.} and Miller, {C. E.} and Bayard, {D. C.} and U. Simon and Smolka, {K. P.} and Curl, {R. F.} and Tittel, {F. K.}",

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AU - Hielscher, A. H.

AU - Miller, C. E.

AU - Bayard, D. C.

AU - Simon, U.

AU - Smolka, K. P.

AU - Curl, R. F.

AU - Tittel, F. K.

PY - 1992/11

Y1 - 1992/11

N2 - Improved performance of a continuous-wave (cw) laser spectrometer for Doppler-limited infrared spectroscopy of molecules based on difference-frequency generation (DFG) in AgGaS2 has been achieved. The spectrometer was configured to generate continuous scans of up to 1 cm-1 from 1550 to 2100 cm-1. An absolute precision of ˜6 × 10-3 cm-1 with a resolution of better than 1.0 MHz (3.3 × 10-5 cm-1) was achieved. Infrared powers of ˜20 μW were obtained by employing 90° Type I phase matching in a 45-mm-long AgGaS2 crystal. The highresolution characteristics of the DFG spectrometer were evaluated by using H2O and N2O spectra. Preliminary infrared kinetic spctroscopy results involving the detection of transient CO radicals from 193-nm acetone photodissociation are also reported.

AB - Improved performance of a continuous-wave (cw) laser spectrometer for Doppler-limited infrared spectroscopy of molecules based on difference-frequency generation (DFG) in AgGaS2 has been achieved. The spectrometer was configured to generate continuous scans of up to 1 cm-1 from 1550 to 2100 cm-1. An absolute precision of ˜6 × 10-3 cm-1 with a resolution of better than 1.0 MHz (3.3 × 10-5 cm-1) was achieved. Infrared powers of ˜20 μW were obtained by employing 90° Type I phase matching in a 45-mm-long AgGaS2 crystal. The highresolution characteristics of the DFG spectrometer were evaluated by using H2O and N2O spectra. Preliminary infrared kinetic spctroscopy results involving the detection of transient CO radicals from 193-nm acetone photodissociation are also reported.

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Optimization of a midinfrared high-resolution difference-frequency laser spectrometer

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