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Proceedings Paper

Improved lasing property of neodymium-doped lanthanum scandium borate microchip laser
Author(s): Won Kweon Jang; Takunori Taira; Tae Hoon Kim; Young Moon Yu; Hoseob Kim
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Paper Abstract

The single crystals of neodymium doped lanthanum scandium borate were grown for the microchip laser fabrication. The crystal structure and parameters were analyzed to define the crystal phase and characteristics. The optical properties, such as fluorescent lifetime, refractive indices, absorption and emission spectra with doping concentration, were investigated and compared to the other neodymium doped single crystals in laser application. The fundamental lasing experiment with 808 nm, consistent with commercial diode laser wavelength, was done with Ti:sapphire laser. And we showed that the direct pumping to the level of 4F3/2 make an improvement in slope efficiency and threshold when it is compared to the result of conventional pumping to the level of 4F5/2 absorption band. The direct pumping played a role for reduction of dissipative heat generation in microchip laser crystal, because its quantum efficiency is higher than the conventional pumping to the level of 4F5/2.

Paper Details

Date Published: 17 September 2002
PDF: 8 pages
Proc. SPIE 4918, Materials, Devices, and Systems for Display and Lighting, (17 September 2002); doi: 10.1117/12.483078
Show Author Affiliations
Won Kweon Jang, Hanseo Univ. (South Korea)
Takunori Taira, Institute for Molecular Science (Japan)
Tae Hoon Kim, Korea Photonics Technology Institute (South Korea)
Young Moon Yu, Korea Photonics Technology Institute (South Korea)
Hoseob Kim, Sunmoon Univ. (South Korea)

Published in SPIE Proceedings Vol. 4918:
Materials, Devices, and Systems for Display and Lighting
Fuxi Gan; Ming Hsien Wu; Lionel C. Kimerling, Editor(s)

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