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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 40, Iss. 24 — Aug. 20, 2001
  • pp: 4322–4325

Cobalt-doped transparent glass ceramic as a saturable absorber Q switch for erbium:glass lasers

Alexander M. Malyarevich, Igor A. Denisov, Konstantin V. Yumashev, Olga S. Dymshits, Alexander A. Zhilin, and Uk Kang  »View Author Affiliations


Applied Optics, Vol. 40, Issue 24, pp. 4322-4325 (2001)
http://dx.doi.org/10.1364/AO.40.004322


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Abstract

A new saturable absorber Q switch for 1.54-µm Er:glass lasers is presented. The saturable absorber is a transparent glass ceramic that contains magnesium–aluminum spinel nanocrystallites doped with tetrahedrally coordinated Co2+ ions. We obtained Q-switched pulses of up to 5.5 mJ in energy and 80 ns in duration at 1.54 µm. The relaxation time of 4A24T1(4F) transition bleaching was measured to be (450 ± 150) ns. Ground-state and excited-state absorption cross sections at 1.54-µm wavelength were estimated to be (3.2 ± 0.4) × 10-19 cm2 and (5.0 ± 0.6) × 10-20 cm2, respectively.

© 2001 Optical Society of America

OCIS Codes
(140.3540) Lasers and laser optics : Lasers, Q-switched
(160.3380) Materials : Laser materials
(160.6990) Materials : Transition-metal-doped materials

History
Original Manuscript: October 12, 2000
Revised Manuscript: March 3, 2001
Published: August 20, 2001

Citation
Alexander M. Malyarevich, Igor A. Denisov, Konstantin V. Yumashev, Olga S. Dymshits, Alexander A. Zhilin, and Uk Kang, "Cobalt-doped transparent glass ceramic as a saturable absorber Q switch for erbium:glass lasers," Appl. Opt. 40, 4322-4325 (2001)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-40-24-4322

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