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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 51, Iss. 34 — Dec. 1, 2012
  • pp: 8147–8158

Ho:YAG absorption cross sections from 1700 to 2200 nm at 83, 175, and 295 K

David C. Brown, Victoria Envid, and Jason Zembek  »View Author Affiliations


Applied Optics, Vol. 51, Issue 34, pp. 8147-8158 (2012)
http://dx.doi.org/10.1364/AO.51.008147


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Abstract

We have obtained absorption spectroscopic cross sections as a function of wavelength for the laser material Ho:YAG at 295, 175, and 83 K, in the spectral range from 1700 to 2200 nm. The absorption range corresponds to I85I75 transitions from the ground state to the first excited state amenable to direct pumping by laser diodes and Tm fiber lasers. The data allow a direct comparison of the absorption cross-section intensities and linewidths as temperature is lowered from room temperature to cryogenic temperatures. Universal absorption curves and numerical tables are presented for pump sources that are assumed to have a Gaussian spectral lineshape, as a function of center wavelength, bandwidth, and optical density (doping density×penetration depth), at 295 and 83 K. Curves and tables are presented for both 295 and 83 K and may be used to optimize the pump absorption and laser efficiency.

© 2012 Optical Society of America

OCIS Codes
(140.0140) Lasers and laser optics : Lasers and laser optics
(140.3460) Lasers and laser optics : Lasers
(140.3580) Lasers and laser optics : Lasers, solid-state

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: September 5, 2012
Manuscript Accepted: October 15, 2012
Published: November 28, 2012

Citation
David C. Brown, Victoria Envid, and Jason Zembek, "Ho:YAG absorption cross sections from 1700 to 2200 nm at 83, 175, and 295 K," Appl. Opt. 51, 8147-8158 (2012)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-51-34-8147

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