High efficient diode side pumped Nd:YVOsub(4) laser with good beam quality with a novel configuration
Carregando...
Data
Data de publicação
2008
Autores IPEN
Orientador
Título da Revista
ISSN da Revista
Título do Volume
É parte de
É parte de
É parte de
É parte de
ENCONTRO NACIONAL DE FISICA DA MATERIA CONDENSADA, 31.
Exportar
Resumo
We demonstrated a cw side pumped N d : Y V O4 laser with high power output and a improvement in beam
quality. Using a compact cavity with less than 8 cm overall length, we obtained very high conversion efficiency
and slope efficiency in multimode operation and 21.9 watts of output power. With a novel compact three mirrors
cavity we improve significantly the beam quality using a second pass inside the gain media maintaining high
output power.
The laser crystal is a N d : Y V O4 with 1.1 at.% neodymium doping and dimensions of 22 × 5 × 2mm3
.
The pump source was a 48 watt TM-polarized diode bar operating at 808 nm. The TM polarization is parallel
to the c-axis of the crystal and hence accesses the high absorption coefficient of 31.4 cm−1
.
In a first experiment we used two mirrors, one flat mirror with 36% transmission and other of 50cm
radius of curvature. We did one single pass through the gain media with one total internal reflection. A 6.4mm
cylindrical lens was used in front of the diode bar in order to focus the pump radiation into the crystal. In
a second experiment we used a double pass configuration with a second total internal reflection at the pump
face. We used a novel configuration with only three mirrors, a high reflector flat mirror, a flat mirror with 36%
transmission and other of 50cm radius of curvature. The same crystal and cylindrical lens in front of the diode
bar was used.
In the single pass configuration we achieved a slope efficiency of 69% with 21.9 watts of output power in
multimode with M2 of 24.6 × 10.4 in horizontal and vertical directions, respectively, while with the double pass
configuration we achieved 17 watts with M2 of 3.4 × 3.8 in the horizontal and vertical directions, respectively.
We conclude that a second pass improved the beam quality and demonstrated this with a compact three mirrors
cavity.
Como referenciar
CAMARGO, F.A.; WETTER, N.U. High efficient diode side pumped Nd:YVOsub(4) laser with good beam quality with a novel configuration. In: ENCONTRO NACIONAL DE FISICA DA MATERIA CONDENSADA, 31., 5-9 de maio, 2008, Aguas de Lindoia, SP. Resumo... Disponível em: http://repositorio.ipen.br/handle/123456789/19629. 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.