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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 11, Iss. 6 — Jun. 1, 1972
  • pp: 1419–1423

Self-Induced Thermal Distortion Effects on Target Image Quality

Frederick G. Gebhardt  »View Author Affiliations


Applied Optics, Vol. 11, Issue 6, pp. 1419-1423 (1972)
http://dx.doi.org/10.1364/AO.11.001419


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Abstract

Experimental results are reported that show the effects of the self-induced thermal lens due to a high power laser beam on imaging or tracking systems viewing along the same propagation path. The thermal distortion effects of a wind are simulated with a low power (≲ 3-W) CO2 laser beam propagating through a cell of liquid CS2 moving across the beam. The resulting image distortion includes a warping effect analogous to the deflection of the CO2 beam, together with a pronounced demagnification of the central portion of the object. An active optical tracker is simulated with a He–Ne laser beam propagating collinearly with the C02 beam. The He–Ne beam pattern returned from a specular target is distorted and sharply confined to the outline of the crescent shaped CO2 beam. Simple ray optics models are used to provide qualitative explanations for the experimental results.

© 1972 Optical Society of America

History
Original Manuscript: November 22, 1971
Published: June 1, 1972

Citation
Frederick G. Gebhardt, "Self-Induced Thermal Distortion Effects on Target Image Quality," Appl. Opt. 11, 1419-1423 (1972)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-11-6-1419

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