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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Vol. 20, Iss. 6 — Jun. 1, 2003
  • pp: 1212–1219

Ho:Ho upconversion: applications to Ho lasers

Norman P. Barnes, Brian M. Walsh, and Elizabeth D. Filer  »View Author Affiliations


JOSA B, Vol. 20, Issue 6, pp. 1212-1219 (2003)
http://dx.doi.org/10.1364/JOSAB.20.001212


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Abstract

Ho:Ho upconversion rates are predicted with a quantum-mechanical model and measured with a Q-switched Co:MgF2 laser to directly excite the Ho 5I7 manifold. If Ho:Ho upconversion is low compared with spontaneous decay, Q-switched, Ho-only lasers can store energy efficiently over long time intervals. In this case, Ho-only lasers, when pumped by long-pulse-length Tm-only lasers, have great potential. Ho-only lasers have proven to be efficient, and, when long pump pulses are used, fewer laser diodes are required. To assess the Ho laser potential, Ho:Ho upconversion parameters are calculated and measured for several Ho laser materials including Ho:YAG and Ho:YLF. The effects of both nonuniform pump energy deposition and diffusion of the excited Ho distribution are analyzed.

© 2003 Optical Society of America

OCIS Codes
(140.3430) Lasers and laser optics : Laser theory
(140.3580) Lasers and laser optics : Lasers, solid-state

Citation
Norman P. Barnes, Brian M. Walsh, and Elizabeth D. Filer, "Ho:Ho upconversion: applications to Ho lasers," J. Opt. Soc. Am. B 20, 1212-1219 (2003)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-20-6-1212

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