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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 13, Iss. 25 — Dec. 12, 2005
  • pp: 10085–10091

Damage threshold and surface distortion measurement for high-reflectance, low-loss mirrors to 100+ MW/cm2 cw laser intensity

Lei S. Meng, Jason K. Brasseur, and David K. Neumann  »View Author Affiliations

Optics Express, Vol. 13, Issue 25, pp. 10085-10091 (2005)

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By frequency-stabilizing the output from an Erbium fiber amplifier at 1580 nm to a high-finesse cavity (finesse ~6300) formed by two high-reflectance, low-loss, concave mirrors, we achieve 22.4±2.0 kW intracavity circulating power and 101±9 MW/cm2 cw intracavity intensities on the surfaces of the mirrors. Repeated experiments show no damage to the mirrors’ coating. In addition, small variations of the mirrors’ radius of curvature are observed and measured by recording the cavity’s transverse-mode range. The mirrors’ 10 cm radius of curvature changes as function of laser intensity at a rate of 105 μm/(MW/cm2).

© 2005 Optical Society of America

OCIS Codes
(140.4780) Lasers and laser optics : Optical resonators
(230.4040) Optical devices : Mirrors
(310.1620) Thin films : Interference coatings
(350.1820) Other areas of optics : Damage

ToC Category:
Research Papers

Lei S. Meng, Jason K. Brasseur, and David K. Neumann, "Damage threshold and surface distortion measurement for high-reflectance, low-loss mirrors to 100+ MW/cm2 cw laser intensity," Opt. Express 13, 10085-10091 (2005)

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