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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 37, Iss. 18 — Jun. 20, 1998
  • pp: 3961–3970

Efficient Continuous-Wave and Q-Switched Operation of a 946-nm Nd:YAG Laser Pumped by an Injection-Locked Broad-Area Diode Laser

Ian D. Lindsay and Majid Ebrahimzadeh  »View Author Affiliations


Applied Optics, Vol. 37, Issue 18, pp. 3961-3970 (1998)
http://dx.doi.org/10.1364/AO.37.003961


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Abstract

The efficient, low-threshold operation of a 946-nm Nd:YAG laser pumped by an injection-locked broad-area diode laser is reported. The implications of pump-beam quality for efficient, low-threshold operation, particularly with intrinsically inefficient transitions, are discussed in the context of previously published models. Results are presented showing that the <i>M</i><sup>2</sup> = 1.3 pump beam of the injection-locked diode laser enabled a cw slope efficiency of 48% and a threshold of 52 mW to be attained. When <i>Q</i>-switched, 335 mW of pump power gave 27-ns, 5.2-μJ pulses. These were frequency doubled to obtain 19-ns, 1-μJ pulses at 473 nm. These results represent significant improvements over similar systems pumped by free-running broad-area diode lasers or arrays.

© 1998 Optical Society of America

OCIS Codes
(140.0140) Lasers and laser optics : Lasers and laser optics
(140.2010) Lasers and laser optics : Diode laser arrays
(140.3480) Lasers and laser optics : Lasers, diode-pumped
(140.3520) Lasers and laser optics : Lasers, injection-locked
(140.3530) Lasers and laser optics : Lasers, neodymium
(140.3580) Lasers and laser optics : Lasers, solid-state

Citation
Ian D. Lindsay and Majid Ebrahimzadeh, "Efficient Continuous-Wave and Q-Switched Operation of a 946-nm Nd:YAG Laser Pumped by an Injection-Locked Broad-Area Diode Laser," Appl. Opt. 37, 3961-3970 (1998)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-37-18-3961


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