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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 39, Iss. 24 — Aug. 20, 2000
  • pp: 4418–4424

Diode-pumped 214.8-nm Nd:YAG/Cr4+:YAG microchip laser system for the detection of NO

J. Wormhoudt, J. H. Shorter, C. C. Cook, and J. J. Zayhowski  »View Author Affiliations


Applied Optics, Vol. 39, Issue 24, pp. 4418-4424 (2000)
http://dx.doi.org/10.1364/AO.39.004418


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Abstract

A passively Q-switched 214.8-nm Nd:YAG/Cr4+:YAG microchip laser system for the detection of NO was designed, constructed, and tested. The system uses the fifth harmonic of the 1.074-µm transition in Nd:YAG to detect NO by laser-induced fluorescence. A significant challenge was the development of an environmentally stable coating to provide the necessary discrimination between the 1.074-µm laser line and the stronger transition at 1.064 µm. The exact position of the fifth-harmonic frequency was determined by use of NO fluorescence excitation spectra to be 46556 ± 1.5 cm-1. With a pulse energy of approximately 50 nJ of fifth-harmonic light, we observed a detection sensitivity for NO of approximately 15 parts per billion by volume in a simple, compact optical system.

© 2000 Optical Society of America

OCIS Codes
(140.3530) Lasers and laser optics : Lasers, neodymium
(140.3580) Lasers and laser optics : Lasers, solid-state
(190.4160) Nonlinear optics : Multiharmonic generation
(300.2530) Spectroscopy : Fluorescence, laser-induced
(300.6360) Spectroscopy : Spectroscopy, laser
(300.6540) Spectroscopy : Spectroscopy, ultraviolet

History
Original Manuscript: November 16, 1999
Revised Manuscript: May 19, 2000
Published: August 20, 2000

Citation
J. Wormhoudt, J. H. Shorter, C. C. Cook, and J. J. Zayhowski, "Diode-pumped 214.8-nm Nd:YAG/Cr4+:YAG microchip laser system for the detection of NO," Appl. Opt. 39, 4418-4424 (2000)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-39-24-4418

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