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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 38, Iss. 9 — Mar. 20, 1999
  • pp: 1772–1776

Efficient diffusive reflector-type diode side-pumped Nd:YAG rod laser with an optical slope efficiency of 55%

Hee-Jong Moon, Jonghoon Yi, Jaemin Han, Byungheon Cha, and Jongmin Lee  »View Author Affiliations


Applied Optics, Vol. 38, Issue 9, pp. 1772-1776 (1999)
http://dx.doi.org/10.1364/AO.38.001772


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Abstract

We fabricated a compact diode side-pumped Nd:YAG laser with a diffusive reflector, in which the diode laser power is transferred directly into the threefold symmetric diffusive cavity through long narrow slits. With a 7.5% output coupler in a linear resonator, we obtained 62.4-W multimode output power with an optical slope efficiency of 53.4% at a diode power of 182 W, which corresponds to an optical-to-optical efficiency of 34.3%. The optical slope efficiency increased to 55.5% when we used an 11% output coupler. From the leakage power analysis method, the pumping efficiency was measured to be approximately 82%. We discuss the thermal lens and the slope efficiency with respect to absorbed power that is derived from the measured pumping efficiency.

© 1999 Optical Society of America

OCIS Codes
(140.3480) Lasers and laser optics : Lasers, diode-pumped
(140.3530) Lasers and laser optics : Lasers, neodymium

History
Original Manuscript: August 21, 1998
Revised Manuscript: October 23, 1998
Published: March 20, 1999

Citation
Hee-Jong Moon, Jonghoon Yi, Jaemin Han, Byungheon Cha, and Jongmin Lee, "Efficient diffusive reflector-type diode side-pumped Nd:YAG rod laser with an optical slope efficiency of 55%," Appl. Opt. 38, 1772-1776 (1999)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-38-9-1772

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