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Título
Carbon nanotube Q-switched Yb:KLuW surface channel waveguide lasers
Autor(es)
Materia
Carbon nanotubes
Femtosecond laser writing
Laser beams
Saturable absorbers
Solid state lasers
Waveguide lasers
Fecha de publicación
2019-12
Citación
Ji Eun Bae, Tae Gwan Park, Esrom Kifle, Xavier Mateos, Magdalena Aguiló, Francesc Díaz, Carolina Romero, Javier Rodríguez Vázquez de Aldana, Hansuek Lee, and Fabian Rotermund, "Carbon nanotube Q-switched Yb:KLuW surface channel waveguide lasers," Opt. Lett. 45, 216-219 (2020)
Resumen
A channel waveguide (WG) buried immediately below the surface of a Yb:KLuW crystal is used as a laser gain medium for passive 𝑄-switching by both evanescent- and direct-field interactions with single-walled carbon nanotubes (SWCNTs) near 1040 nm. The SWCNTs used as saturable absorbers (SAs) are deposited on top of the half-ring-type channel WG fabricated via femtosecond direct laser writing. The 𝑄 -switched WG laser delivers 88.5 ns pulses at a 1.16 MHz repetition rate with a maximum average output power of 680 mW. For the two different interaction schemes with SWCNT-SAs, the pulse characteristics, depending on the output coupling ratio and absorbed pump power, are experimentally investigated and compared to the results of theoretical analyses of the SA 𝑄-switched operation.
URI
ISSN
0146-9592
DOI
10.1364/OL.45.000216
Colecciones
- ALF. Artículos [297]
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