Three-level Nd:YLF Raman laser directly pumped by a beam shaped diode bar
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2020
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SPIE PHOTONICS WEST; SPIE LASE
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Resumo
Low heat generation can be obtained when pumping Nd:YLF at wavelengths of 872 nm and 880 nm and emitting at the
three-level transition of 908 nm. These transitions show very low quantum defect with efficiencies of 0.96 and 0.97,
respectively. However, the low average absorption cross-section at these wavelengths makes efficient absorption even
for longitudinal pump setups difficult. Using a beam-shaped pump diode instead of a fiber-coupled diode bar may be an
effective means of increasing absorption because it can provide for π-polarized radiation which shows higher absorption
cross section. In this work, a Nd:YLF was pumped at 872 nm by a diode bar using beam-shaping. Results were
compared to pumping at 872 and 880 nm with non-polarized fiber-coupled diodes. Stimulated Raman scattering was also
obtained with a KGW crystal generating first Stokes emissions at 990 nm and 976 nm.
Como referenciar
BERECZKI, A.; PAES, JOAO P.F.; WETTER, NIKLAUS U. Three-level Nd:YLF Raman laser directly pumped by a beam shaped diode bar. In: KUDRYASHOV, ALEXIS V. (ed.); PAXTON, ALAN H. (ed.); ILCHENKO, VLADIMIR S. (ed.); ARMANI, ANDREA M. (ed.). In: SPIE PHOTONICS WEST; SPIE LASE, February 1-6, 2020, San Francisco, USA. Proceedings... Washington, USA: SPIE, 2020. p. 1126614-1 - 1126614-8. (Proceedings SPIE 11266, Laser Resonators, Microresonators, and Beam Control XXII). DOI: 10.1117/12.2544844. Disponível em: http://repositorio.ipen.br/handle/123456789/31560. Acesso em: 20 Mar 2026.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.