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Título
Efficient lasing in continuous wave and graphene Q-switched regimes from Nd:YAG ridge waveguides produced by combination of swift heavy ion irradiation and femtosecond laser ablation
Autor(es)
Materia
Waveguides
Lasers
Graphene
Q-switch
Ablation
Femtosecond
Clasificación UNESCO
22 Física
Fecha de publicación
2014-06-02
Editor
Optical Society of America
Citación
Jia, Y., Cheng, C., R. Vázquez de Aldana, J., and Chen, F. (2014). Efficient lasing in continuous wave and graphene Q-switched regimes from Nd:YAG ridge waveguides produced by combination of swift heavy ion irradiation and femtosecond laser ablation. Optics Express, 22 (11),12900-12908.
Resumen
We report on the continuous wave and passively Q-switched
lasers in Nd:YAG ridge waveguides fabricated by a combination of swift Kr
ion irradiation and femtosecond laser ablation. Owing to the deep
penetration length (~50 μm) of 670 MeV Kr8+ ions into the crystal, ridge
waveguides with large-area cross section, supporting nearly symmetric
guiding modes, were produced. Continuous wave lasers with maximum 182
mW output power at ~1064 nm have been realized at 808-nm optical pump.
Using graphene as a saturable absorber, passively Q-switched waveguide
laser operations were achieved. The pulsed laser produces 90 ns pulses,
with a ~4.2 MHz repetition rate, 19% slope efficiency and 110 mW average
output power, corresponding to single-pulse energy of 26.5 nJ.
URI
ISSN
1094-4087
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