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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 52, Iss. 36 — Dec. 20, 2013
  • pp: 8795–8801

Continuous wave and passively Q-switched Nd:YAG laser with a multisegmented crystal diode-pumped at 885  nm

C. Evangelatos, P. Bakopoulos, G. Tsaknakis, D. Papadopoulos, G. Avdikos, A. Papayannis, and G. Tzeremes  »View Author Affiliations


Applied Optics, Vol. 52, Issue 36, pp. 8795-8801 (2013)
http://dx.doi.org/10.1364/AO.52.008795


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Abstract

Mitigation of thermal effects in a 1064 nm Nd:YAG laser is demonstrated through the combination of a multisegmented crystal rod and upper laser level pumping by diode at 885 nm toward optimizing the generated beam profile. Continuous wave (cw) and passively Q-switched operation is demonstrated obtaining 7.5 W and 2 mJ at 100 Hz, respectively, with excellent beam quality. Comparison with a conventional uniform Nd:YAG rod reveals improvements of up to 64% in optical conversion efficiency and 67% in output power for retaining the beam quality. Thermal-lensing measurements validate the improved thermal management in the multisegmented crystal in conjunction with M-square values better than 1.3.

© 2013 Optical Society of America

OCIS Codes
(140.3480) Lasers and laser optics : Lasers, diode-pumped
(140.3530) Lasers and laser optics : Lasers, neodymium
(140.3540) Lasers and laser optics : Lasers, Q-switched
(140.3580) Lasers and laser optics : Lasers, solid-state
(140.6810) Lasers and laser optics : Thermal effects

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: September 19, 2013
Revised Manuscript: November 13, 2013
Manuscript Accepted: November 25, 2013
Published: December 16, 2013

Citation
C. Evangelatos, P. Bakopoulos, G. Tsaknakis, D. Papadopoulos, G. Avdikos, A. Papayannis, and G. Tzeremes, "Continuous wave and passively Q-switched Nd:YAG laser with a multisegmented crystal diode-pumped at 885  nm," Appl. Opt. 52, 8795-8801 (2013)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-52-36-8795


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