Basic enhancement of the global efficiency of frequency doubling devices for the one-micron continuous-wave Nd:YAG laser emission

Voicu Lupei; Nicolaie A. Pavel; Takunori Taira

doi:10.1117/12.582813

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21 October 2004 Basic enhancement of the global efficiency of frequency doubling devices for the one-micron continuous-wave Nd:YAG laser emission

Voicu Lupei, Nicolaie A. Pavel, Takunori Taira

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Proceedings Volume 5581, ROMOPTO 2003: Seventh Conference on Optics; (2004) https://doi.org/10.1117/12.582813
Event: ROMOPTO 2003: Seventh Conference on Optics, 2003, Constanta, Romania

Abstract

The possibility of basic enhancement of the global efficiency of frequency-doubling devices for the one-micron continuous-wave Nd lasers by direct pumping into the emitting level and by the use of concentrated laser materials is discussed. This possibility is demonstrated for 1.0 and 2.4-at.% Nd:YAG crystals pumped by a Ti:Sapphire laser at 885 nm. A slope efficiency of 0.79 in absorbed power was obtained for the 1064 nm emission of the 1-at.% Nd:YAG. The effect of enhancement of intracavity emission on the second harmonic emission is manifested in a drastically reduction of emission threshold and in an enhanced dependence on the absorbed power. The use of concentrated Nd:YAG crystals enables a better use of the pump power and increases the overall efficiency of the frequency-doubling devices.

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Voicu Lupei, Nicolaie A. Pavel, and Takunori Taira "Basic enhancement of the global efficiency of frequency doubling devices for the one-micron continuous-wave Nd:YAG laser emission", Proc. SPIE 5581, ROMOPTO 2003: Seventh Conference on Optics, (21 October 2004); https://doi.org/10.1117/12.582813

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