OSA's Digital Library

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


View Full Text Article

Enhanced HTML    Acrobat PDF (676 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

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


Sort:  Author  |  Year  |  Journal  |  Reset  

References

  1. J. Peñano, P. Sprangle, A. Ting, R. Fischer, B. Hafizi, and P. Serafim, “Optical quality of high-power laser beams in lenses,” J. Opt. Soc. Am. B 26, 503–510 (2009). [CrossRef]
  2. L. D. Landau and E. M. Lifshitz, “Thermal conduction in an incompressible fluid,” in Fluid Mechanics (Pergamon, 1975).
  3. L. D. Landau and E. M. Lifshitz, “The general equation of heat transfer,” in Fluid Mechanics (Pergamon, 1975).
  4. L. D. Landau and E. M. Lifshitz, “Free convection,” in Fluid Mechanics (Pergamon, 1975).
  5. A. Nakayama and H. Koyama, “An integral method for free convection from a vertical heated surface in a thermally stratified porous medium,” Wärme-Stoffübertrag 21, 297–300 (1987). [CrossRef]
  6. R. B. Bird, W. E. Stewart, and E. N. Lightfoot, “Use of the equations of change to solve steady-state problems” in Transport Phenomena (Wiley, 2002).
  7. Y. Çengel and R. H. Turner, “Equation of motion and the Grashof number,” Fundamentals of Thermal-Fluid Sciences (McGraw-Hill, 2005).
  8. S. Ostrach, “An analysis of laminar free-convection flow and heat transfer about a flat plate parallel to the direction of the generating body force,” National Advisory Committee for Aeronautics Report Number 1111 (1953).
  9. P. Sprangle, A. Ting, J. Peñano, R. Fischer, and B. Hafizi, “Incoherent combining and atmospheric propagation of high-power fiber lasers for directed-energy applications,” IEEE J. Quantum Electron. 45, 138–148 (2009). [CrossRef]
  10. V. Loriette and C. Boccara, “Absorption of low-loss optical materials measured at 1064 nm by a position-modulated ollinear photothermal detection technique,” Appl. Opt. 42, 649–656 (2003). [CrossRef]
  11. S. R. Nersisyan, N. V. Tabiryan, and C. M. Stickley, “Characterization of glass and high-power near-infrared CW laser beams using nonlinear optical techniques,” Opt. Eng. 45, 104301 (2006). [CrossRef]

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.


« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited