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Title: External Cavity Quantum Cascade Laser for Quartz Tuning Fork Photoacoustic Spectroscopy of Broad Absorption Features

Abstract

We demonstrate mid-infrared spectroscopy of large molecules with broad absorption features using a tunable external cavity quantum cascade laser. Absorption spectra for two different Freons are measured over the range 1130-1185 cm-1 with 0.2 cm-1 resolution via laser photoacoustic spectroscopy with quartz tuning forks as acoustic transducers. The measured spectra are in excellent agreement with published reference absorption spectra.

Authors:
; ; ;
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
909468
Report Number(s):
PNNL-SA-53174
Journal ID: ISSN 0146-9592; OPLEDP; NN2001000; TRN: US200722%%1098
DOE Contract Number:
AC05-76RL01830
Resource Type:
Journal Article
Resource Relation:
Journal Name: Optics Letters, 32(9):1177-1179; Journal Volume: 32; Journal Issue: 9
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; LASERS; DESIGN; PHOTOACOUSTIC SPECTROSCOPY; QUARTZ; TUNING; OCIS codes: 140.3070 Infrared and far-infrared lasers; 140.3600 Lasers; tunable; 140.5960 Semiconductor lasers; 300.6340 Spectroscopy; infrared; 300.6430 Spectroscopy; optoacoustic and thermo-optic

Citation Formats

Phillips, Mark C., Myers, Tanya L., Wojcik, Michael D., and Cannon, Bret D. External Cavity Quantum Cascade Laser for Quartz Tuning Fork Photoacoustic Spectroscopy of Broad Absorption Features. United States: N. p., 2007. Web. doi:10.1364/OL.32.001177.
Phillips, Mark C., Myers, Tanya L., Wojcik, Michael D., & Cannon, Bret D. External Cavity Quantum Cascade Laser for Quartz Tuning Fork Photoacoustic Spectroscopy of Broad Absorption Features. United States. doi:10.1364/OL.32.001177.
Phillips, Mark C., Myers, Tanya L., Wojcik, Michael D., and Cannon, Bret D. Tue . "External Cavity Quantum Cascade Laser for Quartz Tuning Fork Photoacoustic Spectroscopy of Broad Absorption Features". United States. doi:10.1364/OL.32.001177.
@article{osti_909468,
title = {External Cavity Quantum Cascade Laser for Quartz Tuning Fork Photoacoustic Spectroscopy of Broad Absorption Features},
author = {Phillips, Mark C. and Myers, Tanya L. and Wojcik, Michael D. and Cannon, Bret D.},
abstractNote = {We demonstrate mid-infrared spectroscopy of large molecules with broad absorption features using a tunable external cavity quantum cascade laser. Absorption spectra for two different Freons are measured over the range 1130-1185 cm-1 with 0.2 cm-1 resolution via laser photoacoustic spectroscopy with quartz tuning forks as acoustic transducers. The measured spectra are in excellent agreement with published reference absorption spectra.},
doi = {10.1364/OL.32.001177},
journal = {Optics Letters, 32(9):1177-1179},
number = 9,
volume = 32,
place = {United States},
year = {Tue May 01 00:00:00 EDT 2007},
month = {Tue May 01 00:00:00 EDT 2007}
}
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  • No abstract prepared.
  • An ultra compact all-fiber quartz-enhanced photoacoustic spectroscopy (QEPAS) sensor using quartz tuning fork (QTF) with a low resonance frequency of 30.72 kHz was demonstrated. Such a sensor architecture has the advantages of easier optical alignment, lower insertion loss, lower cost, and more compact compared with a conventional QEPAS sensor using discrete optical components for laser delivery and coupling to the QTF. A fiber beam splitter and three QTFs were employed to perform multi-point detection and demonstrated the potential of spatially resolved measurements.
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