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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 12, Iss. 7 — Apr. 5, 2004
  • pp: 1383–1388

High-energy, high-contrast, double-confocal multipass amplifier

Jeffrey Wojtkiewicz and Charles G. Durfee  »View Author Affiliations

Optics Express, Vol. 12, Issue 7, pp. 1383-1388 (2004)

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We have developed a high-contrast, high-beam-quality Ti:sapphire amplifier producing pulses of 10 mJ in a single stage with 19% efficiency. The amplifier has a double-confocal multipass ring configuration that allows for a large mode volume by use of a collimated beam in the gain medium. We have designed the amplifier optics to correct for aberrations and for spatial gain narrowing. The compressed output beam has an M2 of 1.15. The use of an internal saturable absorber in the amplifier results in an intensity contrast of ~109. We anticipate this design will be useful to extend the multipass architecture to low-gain media and to still higher output energy.

© 2004 Optical Society of America

OCIS Codes
(140.3280) Lasers and laser optics : Laser amplifiers
(320.7090) Ultrafast optics : Ultrafast lasers

ToC Category:
Research Papers

Original Manuscript: March 4, 2004
Revised Manuscript: March 23, 2004
Published: April 5, 2004

Jeffrey Wojtkiewicz and Charles Durfee, "High-energy, high-contrast, double-confocal multipass amplifier," Opt. Express 12, 1383-1388 (2004)

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  1. S. Backus, C. Durfee, M. M. Murnane, and H. C. Kapteyn, "High power ultrafast lasers," Rev. Sci. Instrum. 69, 1207-1223 (1998) [CrossRef]
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