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Applied Optics

Applied Optics


  • Vol. 28, Iss. 9 — May. 1, 1989
  • pp: 1727–1730

Optical distortion of transmissive optics at high power CO2 laser irradiation

Hidemi Takahashi, Minoru Kimura, and Reiji Sano  »View Author Affiliations

Applied Optics, Vol. 28, Issue 9, pp. 1727-1730 (1989)

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The optical distortions of transmissive optics for high power CO2 lasers have been measured by the interference of a probe He–Ne laser beam. The change of interference fringes is observed by a video camera when the sample is irradiated by a cw high power CO2 laser. From the change of fringe pattern, the optical distortion is obtained and the spatial distribution of the temperature rise is derived. Thermal expansion and thermal change of the optics cause optical distortions. Both factors have to be added to large thermal lensing effects for ZnSe optics but they are small for KCl optics.

© 1989 Optical Society of America

Original Manuscript: September 23, 1988
Published: May 1, 1989

Hidemi Takahashi, Minoru Kimura, and Reiji Sano, "Optical distortion of transmissive optics at high power CO2 laser irradiation," Appl. Opt. 28, 1727-1730 (1989)

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