| Autor: |
Bae, Ji Eun, Park, Tae Gwan, Kifle, Esrom, Mateos, Xavier, Aguiló, Magdalena, Díaz, Francesc, Romero, Carolina, Rodríguez Vázquez de Aldana, Javier, Lee, Hansuek, Rotermund, Fabian |
| Zdroj: |
Optics Letters; January 2020, Vol. 45 Issue: 1 p216-219, 4p |
| Abstrakt: |
A channel waveguide (WG) buried immediately below the surface of a Yb:KLuW crystal is used as a laser gain medium for passive ${Q}$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 ${Q}$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 ${Q}$Q-switched operation. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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