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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 47, Iss. 18 — Jun. 20, 2008
  • pp: 3360–3363

Reflective attenuator for high-energy laser measurements

John H. Lehman, David Livigni, Xiaoyu Li, Christopher L. Cromer, and Marla L. Dowell  »View Author Affiliations


Applied Optics, Vol. 47, Issue 18, pp. 3360-3363 (2008)
http://dx.doi.org/10.1364/AO.47.003360


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Abstract

A high-energy laser attenuator in the range of 250 mJ ( 20 ns pulse width, 10 Hz repetition rate, 1064 nm wavelength) is described. The optical elements that constitute the attenuator are mirrors with relatively low reflectance, oriented at a 45 ° angle of incidence. By combining three pairs of mirrors, the incoming radiation is collinear and has the same polarization orientation as the exit. We present damage testing and polarization-dependent reflectance measurements for 1064 nm laser light at 45 ° angle of incidence for molybdenum, silicon carbide, and copper mirrors. A six element, 74 times ( 18 dB ) attenuator is presented as an example.

© 2008 Optical Society of America

OCIS Codes
(140.0140) Lasers and laser optics : Lasers and laser optics
(140.3330) Lasers and laser optics : Laser damage
(230.0230) Optical devices : Optical devices

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: March 26, 2008
Manuscript Accepted: May 5, 2008
Published: June 17, 2008

Citation
John H. Lehman, David Livigni, Xiaoyu Li, Christopher L. Cromer, and Marla L. Dowell, "Reflective attenuator for high-energy laser measurements," Appl. Opt. 47, 3360-3363 (2008)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-47-18-3360


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References

  1. X. Li, T. Scott, S. Yang, C. Cromer, and M. Dowell, “Nonlinearity measurements of high-power laser detectors at NIST,” J. Res. Natl. Inst. Stand. Technol. 109, 429-434 (2004).
  2. R. O. Rice and J. D. Macomber, “Attenuation of giant laser pulsed by absorbing filters,” Appl. Opt. 14, 2203-2206 (1975). [CrossRef] [PubMed]
  3. K. Hirabayashi, M. Wada, and C. Amano, “Compact optical-fiber variable attenuator arrays with polymer-network liquid crystals,” Appl. Opt. 40, 3509-3517 (2001). [CrossRef]
  4. D. L. Franzen and L. B. Schmidt, “Absolute reference calorimeter for measuring high power laser pulses,” Appl. Opt. 15, 3115-3122 (1976). [CrossRef] [PubMed]
  5. W. R. Goggin and J. W. Moberly, “Thermal dimensional instabilities of beryllium mirrors,” Appl. Opt. 9, 2691-2696(1970). [CrossRef] [PubMed]
  6. J. H. Lehman and C. L. Cromer, “Optical tunnel trap detector for radiometric measurements,” Metrologia 37, 477-480(2000). [CrossRef]
  7. By convention, the statement 1/e2 is to say that, for an ideally Gaussian laser beam profile, approximately 86% of the laser energy is contained within an area defined by the given radius.
  8. E. D. Palik, Handbook of Optical Constants of Solids II (Academic, 1991).

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