1 Watt femtosecond mid-IR Cr:ZnS laser

Evgeni Sorokin; Nikolai Tolstik; Irina T. Sorokina

doi:10.1117/12.2003877

6 March 2013 1 Watt femtosecond mid-IR Cr:ZnS laser

Evgeni Sorokin, Nikolai Tolstik, Irina T. Sorokina

Proceedings Volume 8599, Solid State Lasers XXII: Technology and Devices; 859916 (2013) https://doi.org/10.1117/12.2003877
Event: SPIE LASE, 2013, San Francisco, California, United States

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.

Citation Download Citation

Evgeni Sorokin, Nikolai Tolstik, and Irina T. Sorokina "1 Watt femtosecond mid-IR Cr:ZnS laser", Proc. SPIE 8599, Solid State Lasers XXII: Technology and Devices, 859916 (6 March 2013); https://doi.org/10.1117/12.2003877

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