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Proceedings Paper

1 Watt femtosecond mid-IR Cr:ZnS laser
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Paper Abstract

A room-temperature Kerr-Lens modelocked (KLM) Cr:ZnS laser generates <70 fs pulses duration (about eight optical cycles) with 5.6 nJ pulse energy and over 100 nm FWHM spectral width at 105-157 MHz repetition rates. The laser produces 1 W average output power at 20% optical efficiency, limited by the available Er:fiber pump. For further pulse energy scaling we also realized the chirped-pulse regime, with 0.8-2 ps pulse durations. The demonstrated applications of such mid-IR source range from extra- and intra-cavity spectroscopy to subharmonic OPO pumping. For environmentally-protected delivery we suggest and realize duration-preserving soliton delivery in a ZBLAN fiber. Further bandwidth increase is demonstrated by 2.0-2.8 μm supercontinuum generation in a chalcogenide fiber.

Paper Details

Date Published: 6 March 2013
PDF: 7 pages
Proc. SPIE 8599, Solid State Lasers XXII: Technology and Devices, 859916 (6 March 2013); doi: 10.1117/12.2003877
Show Author Affiliations
Evgeni Sorokin, Technische Univ. Wien (Austria)
Nikolai Tolstik, Norwegian Univ. of Science and Technology (Norway)
Irina T. Sorokina, Norwegian Univ. of Science and Technology (Norway)

Published in SPIE Proceedings Vol. 8599:
Solid State Lasers XXII: Technology and Devices
W. Andrew Clarkson; Ramesh Shori, Editor(s)

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