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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 29, Iss. 6 — Feb. 20, 1990
  • pp: 798–801

Sampling of diode laser spectra by a confocal etalon fringe pattern

Christophe Nicolas and Jonathan C. Sproul  »View Author Affiliations


Applied Optics, Vol. 29, Issue 6, pp. 798-801 (1990)
http://dx.doi.org/10.1364/AO.29.000798


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Abstract

This paper presents an original method of IR diode laser spectra sampling, where the sampling is defined by the fringe pattern of a confocal etalon. The laser wave number is scanned between two peaks of the Airy type function and is temporarily locked to each peak, allowing integration of the spectroscopic data on another optoelectronic channel. This method is well adapted to broad absorption line studies, provided the line can afford the relatively large sample spacing (0.01 cm−1). A monitoring experiment for both pressure and HBr concentration in halogen bulbs is presented to show an example of the method’s use.

© 1990 Optical Society of America

History
Original Manuscript: June 22, 1989
Published: February 20, 1990

Citation
Christophe Nicolas and Jonathan C. Sproul, "Sampling of diode laser spectra by a confocal etalon fringe pattern," Appl. Opt. 29, 798-801 (1990)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-29-6-798


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References

  1. P. Connes, “L’etalon de Fabry-Perot Spherique,” J. Phys. Radium 19, 262–267 (1958). [CrossRef]
  2. D. E. Jennings, “Calibration of Diode Laser Spectra Using a Confocal Etalon,” Appl. Opt. 23, 1299–1301 (1984). [CrossRef] [PubMed]
  3. H. J. Clar, M. Reich, R. Schieder, G. Winnewisser, K. M. T. Yamada, “Diode Laser Spectrum of the ν6 Band of CH3I Using a Novel Etalon as a Calibration Scale,” J. Mol. Spectrosc. 112, 447–458 (1985). [CrossRef]
  4. M. Reich, R. Schieder, H. J. Clar, G. Winnewisser, “Internally Coupled Fabry-Perot Interferometer for High Precision Wavelength Control of Tunable Diode Lasers,” Appl. Opt. 25, 130–135 (1986). [CrossRef] [PubMed]
  5. T. Giesen, M. Harter, R. Schieder, G. Winnewisser, K. M. T. Yamada, “High Resolution Spectroscopy Using a Stabilized Diode Laser: The 2 ν9 Band of HNO3,” Z. Naturforsch. 43a, 402–406 (1988).
  6. C. Nicolas, A. W. Mantz, “Infrared Tunable Diode Laser Control: Frequency Stabilization and Digitization of Spectra Leading to High Sensitivity and Accurate Frequency Scale,” Appl. Opt. 28, 4525–4532 (1989). [CrossRef] [PubMed]
  7. H. J. Clar, R. Schieder, M. Reich, G. Winnewisser, “High Precision Frequency Calibration of Tunable Diode Lasers Stabilized on an Internally Coupled Fabry-Perot Interferometer,” Appl. Opt. 28, 1648–1656 (1989). [CrossRef] [PubMed]
  8. H. J. Clar, R. Schieder, G. Winnewisser, K. M. T. Yamada, “Pressure Broadening and Lineshifts in the ν2 Band of NH3,” J. Mol. Struct. 190, 447–456 (1988). [CrossRef]
  9. Nitrocellulose presents absorption bands in the IR at 1280 and 1650 cm−1. If one works in these spectral regions, it might be preferable to use an uncoated KBr flat as a beam splitter for better performance.
  10. The PIR is an electronic interface that sums two signals, one proportional to the input signal, the other an integration of the input signal. This regulator is a key element in the diode laser frequency stabilization experiments and particularly for fringe triggered data collection.
  11. Specifications given by the manufacturer, Burleigh Instrument, Inc., Burleigh Park, Fishers, NY 14453.
  12. D. L. Wall, E. F. Pearson, A. W. Mantz, “Tunable Diode Lasers for Industrial Analysis and Monitoring Applications,” in Proceedings, Fourth World Congress of International Federation of Automatic Control (Ghent, Belgium, 1980), pp. 295–300.
  13. L. S. Rothman et al., “The HITRAN Database: 1986 Edition,” Appl. Opt. 26, 4058–4097 (1987). [CrossRef] [PubMed]
  14. J. O’Connell, Laser Photonics, Analytics Division; private communication.

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