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High-efficiency longitudinally-pumped miniature Nd:YVO4 laser

✍ Scribed by Nicolaie Pavel; Takunori Taira; Mitsuyoshi Furuhata

Publisher
Elsevier Science
Year
1998
Tongue
English
Weight
394 KB
Volume
30
Category
Article
ISSN
0030-3992

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✦ Synopsis

We report on fundamental and intracavity frequency-doubled emission in a miniature Nd:YVO 4 (3 Γ‚ 3 Γ‚ 1 mm) laser. A maximum slope eciency of Z s = 58.6%, with optical eciency of Z 0 = 53.0% at 780 mW pump power was realized in a TEM 00 output beam. To obtain the optimum pump-beam focusing conditions we applied a new formalism in which the pump-beam propagation in the active medium was described by its M 2 factor. A good agreement between theoretical predictions and experimental results was observed. In second-harmonic regime, obtained by a KTP crystal, H230 mW green power that corresponds to H54% nonlinear conversion eciency was reached.

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