Tm:KY1-x-yGdxLuy(WO4)(2) planar waveguide laser passively Q-switched by single-walled carbon nanotubes

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A Tm3+ monoclinic double tungstate planar waveguide laser is passively Q-switched (PQS) by a saturable absorber (SA) based on single-walled carbon nanotubes (SWCNTs) randomly oriented in a polymer film. The laser is based on a 18 mu m-thick 5 at.% Tm:KY1-x-yGdxLuy(WO4) 2 active layer grown on an undoped (010)-oriented KY(WO4) 2 substrate by liquid phase epitaxy with determined propagation losses 0.7 +/- 0.2 dB/cm. The PQS laser generated a maximum average output power of 45.6 mW at 1.8354 mu m with a slope efficiency of 22.5%. Stable 83-ns-long laser pulses with an energy of 33 nJ were achieved at a repetition rate of 1.39 MHz. The use of SWCNTs as SA is promising for generation of sub-100 ns pulses in such waveguide lasers at similar to 2 mu m. (C) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
Publisher
OPTICAL SOC AMER
Issue Date
2018-02
Language
English
Article Type
Article
Keywords

1.9 MU-M; SATURABLE ABSORBER; SLOPE EFFICIENCY; MODE-LOCKING; TM

Citation

OPTICS EXPRESS, v.26, no.4, pp.4961 - 4966

ISSN
1094-4087
DOI
10.1364/OE.26.004961
URI
http://hdl.handle.net/10203/240952
Appears in Collection
PH-Journal Papers(저널논문)
Files in This Item
OPEX-26-4961-2018.pdf(3 MB)Download
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