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Proceedings Article

Propagation of a laser beam through vapor media

[+] Author Affiliations
Anurup G. Barua

Gauhati Univ. (India)

Gauranga D. Baruah

Dibrugarh Univ. (India)

Proc. SPIE 4976, Atmospheric Propagation, 222 (April 30, 2003); doi:10.1117/12.479201
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From Conference Volume 4976

  • Atmospheric Propagation
  • Cynthia Y. Young; John S. Stryjewski
  • San Jose, CA | January 25, 2003

abstract

One of the elementary models of molecular band absorption is the quasi-random model. This model is used to study the propagation of a laser beam through vapor media. 1.15μm is one of the many helium-neon lasers operating in the near-IR region; in this region water vapor molecules have five absorption lines. Absorption of this laser beam in a cloud of water vapor, in the frequency interval 8676-8680 cm-1, is shown in intervals 0.2 cm-2 wide for two different path lengths. Interaction of a tunable dye laser beam with p-benzoquinone-D4 lines is studied in the frequecny range 20750-22275 cm-1. Values of transmittance, averaged over intervals of 25 cm-1, are obtained for two different absorber thicknesses. From these values, intensities of the absorption lines are simulated.

© (2003) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Anurup G. Barua and Gauranga D. Baruah
"Propagation of a laser beam through vapor media", Proc. SPIE 4976, Atmospheric Propagation, 222 (April 30, 2003); doi:10.1117/12.479201; http://dx.doi.org/10.1117/12.479201


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