Graphene Q-switched Yb:KYW planar waveguide laser

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A diode-pumped Yb:KYW planar waveguide laser, single-mode Q-switched by evanescent-field interaction with graphene, is demonstrated for the first time. Few-layer graphene grown by chemical vapor deposition is transferred onto the top of a guiding layer, which initiates stable Q-switched operation in a 2.4-cm-long waveguide laser operating near 1027 nm. Average output powers up to 34 mW and pulse durations as short as 349 ns are achieved. The measured output beam profile, clearly exhibiting a single mode, agrees well with the theoretically calculated mode intensity distribution inside the waveguide. As the pump power is increased, the repetition rate and pulse energy increase from 191 to 607 kHz and from 7.4 to 58.6 nJ, respectively, whereas the pulse duration decreases from 2.09 mu s to 349 ns. (C) 2015 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution 3.0 Unported License
Publisher
AMER INST PHYSICS
Issue Date
2015-01
Language
English
Article Type
Article
Citation

AIP ADVANCES, v.5, no.1, pp.017110

ISSN
2158-3226
DOI
10.1063/1.4905785
URI
http://hdl.handle.net/10203/212668
Appears in Collection
PH-Journal Papers(저널논문)
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