Improving the power and spectral performance of a 27-33 THz AgGaS2 difference-frequency spectrometer

T. Kaing; Jean Jacques Zondy; A. P. Yelisseyev; S. I. Lobanov; Ludmila I. Isaenko

doi:10.1109/19.769665

Improving the power and spectral performance of a 27-33 THz AgGaS₂ difference-frequency spectrometer

T. Kaing, Jean Jacques Zondy, A. P. Yelisseyev, S. I. Lobanov, Ludmila I. Isaenko

Research output: Contribution to journal › Article

3 Citations (Scopus)

Abstract

Progress toward the achievement of a compact, sub-kilohertz resolution difference-frequency spectrometer to probe narrow saturated molecular transitions in the 9-11 μm range is reported. The spectrometer, presently generating 40 nW of infrared (IR) power [8], uses a type-I cut AgGaS₂ crystal located in a dual-cavity resonator design. A frequency-stabilized alldiode-laser setup was implemented to obtain the required mid-IR spectral purity and frequency tuning range. Further experimental investigations show that a type-II phase-matched AgGaS₂ crystal or a walkoff-compensated, two-crystal device would yield at least two times larger conversion efficiency than type-I cut samples. These improvements should help to reach the goal of the microwatt-level output for the IR radiation.

Original language	English
Pages (from-to)	592-595
Number of pages	4
Journal	IEEE Transactions on Instrumentation and Measurement
Volume	48
Issue number	2
DOIs	https://doi.org/10.1109/19.769665
Publication status	Published - Dec 1 1999
Externally published	Yes

Keywords

Difference-frequency generation
Frequency metrology
Infrared spectroscopy

ASJC Scopus subject areas

Instrumentation
Electrical and Electronic Engineering

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abstract = "Progress toward the achievement of a compact, sub-kilohertz resolution difference-frequency spectrometer to probe narrow saturated molecular transitions in the 9-11 μm range is reported. The spectrometer, presently generating 40 nW of infrared (IR) power [8], uses a type-I cut AgGaS2 crystal located in a dual-cavity resonator design. A frequency-stabilized alldiode-laser setup was implemented to obtain the required mid-IR spectral purity and frequency tuning range. Further experimental investigations show that a type-II phase-matched AgGaS2 crystal or a walkoff-compensated, two-crystal device would yield at least two times larger conversion efficiency than type-I cut samples. These improvements should help to reach the goal of the microwatt-level output for the IR radiation.",

keywords = "Difference-frequency generation, Frequency metrology, Infrared spectroscopy",

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T1 - Improving the power and spectral performance of a 27-33 THz AgGaS2 difference-frequency spectrometer

AU - Kaing, T.

AU - Zondy, Jean Jacques

AU - Yelisseyev, A. P.

AU - Lobanov, S. I.

AU - Isaenko, Ludmila I.

PY - 1999/12/1

Y1 - 1999/12/1

N2 - Progress toward the achievement of a compact, sub-kilohertz resolution difference-frequency spectrometer to probe narrow saturated molecular transitions in the 9-11 μm range is reported. The spectrometer, presently generating 40 nW of infrared (IR) power [8], uses a type-I cut AgGaS2 crystal located in a dual-cavity resonator design. A frequency-stabilized alldiode-laser setup was implemented to obtain the required mid-IR spectral purity and frequency tuning range. Further experimental investigations show that a type-II phase-matched AgGaS2 crystal or a walkoff-compensated, two-crystal device would yield at least two times larger conversion efficiency than type-I cut samples. These improvements should help to reach the goal of the microwatt-level output for the IR radiation.

AB - Progress toward the achievement of a compact, sub-kilohertz resolution difference-frequency spectrometer to probe narrow saturated molecular transitions in the 9-11 μm range is reported. The spectrometer, presently generating 40 nW of infrared (IR) power [8], uses a type-I cut AgGaS2 crystal located in a dual-cavity resonator design. A frequency-stabilized alldiode-laser setup was implemented to obtain the required mid-IR spectral purity and frequency tuning range. Further experimental investigations show that a type-II phase-matched AgGaS2 crystal or a walkoff-compensated, two-crystal device would yield at least two times larger conversion efficiency than type-I cut samples. These improvements should help to reach the goal of the microwatt-level output for the IR radiation.

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