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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 51, Iss. 14 — May. 10, 2012
  • pp: 2573–2580

Laser heating of uncoated optics in a convective medium

B. Hafizi, A. Ting, D. F. Gordon, P. Sprangle, J. R. Peñano, R. F. Fischer, G. P. DiComo, and D. C. Colombant  »View Author Affiliations


Applied Optics, Vol. 51, Issue 14, pp. 2573-2580 (2012)
http://dx.doi.org/10.1364/AO.51.002573


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Abstract

Powerful, long-pulse lasers have a variety of applications. In many applications, optical elements are employed to direct, focus, or collimate the beam. Typically the optic is suspended in a gaseous environment (e.g., air) and can cool by convection. The variation of the optic temperature with time is obtained by combining the effects of laser heating, thermal conduction, and convective loss. Characteristics of the solutions in terms of the properties of the optic material, laser beam parameters, and the environment are discussed and compared with measurements at the Naval Research Laboratory, employing kW-class, 1 µm wavelength, continuous wave lasers and optical elements made of fused silica or BK7 glass. The calculated results are in good agreement with the measurements, given the approximations in the analysis and the expected variation in the absorption coefficients of the glasses used in the experiments.

© 2012 Optical Society of America

OCIS Codes
(110.0110) Imaging systems : Imaging systems
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(140.0140) Lasers and laser optics : Lasers and laser optics

History
Original Manuscript: August 10, 2011
Revised Manuscript: January 5, 2012
Manuscript Accepted: January 6, 2012
Published: May 8, 2012

Citation
B. Hafizi, A. Ting, D. F. Gordon, P. Sprangle, J. R. Peñano, R. F. Fischer, G. P. DiComo, and D. C. Colombant, "Laser heating of uncoated optics in a convective medium," Appl. Opt. 51, 2573-2580 (2012)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-51-14-2573

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