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Kerr-lens mode-locked Cr:ZnS laser |
Optics Letters, Vol. 38, Issue 3, pp. 299-301 (2013)
http://dx.doi.org/10.1364/OL.38.000299
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Abstract
We report the soft-aperture Kerr-lens mode-locked Cr:ZnS laser, generating 550 mW of 69 fs nearly transform-limited pulses at 2.39 μm wavelength. The pulse energy reached 3.8 nJ at 145 MHz repetition rate, limited by the onset of double-pulsing. This corresponds to the shortest-pulse and highest-energy direct femtosecond laser source in the mid-infrared. Dispersion compensation was achieved by a single chirped mirror and a thin sapphire plate, making the laser design simple, compact and very stable, and operating at ambient air and room temperature. The superb thermal and mechanical properties of Cr:ZnS, exceeding those of Cr:ZnSe and many established femtosecond laser crystals, should allow for further scaling of output power.
© 2013 Optical Society of America
OCIS Codes
(140.3070) Lasers and laser optics : Infrared and far-infrared lasers
(140.3580) Lasers and laser optics : Lasers, solid-state
(140.4050) Lasers and laser optics : Mode-locked lasers
ToC Category:
Lasers and Laser Optics
History
Original Manuscript: November 14, 2012
Manuscript Accepted: December 10, 2012
Published: January 18, 2013
Citation
Nikolai Tolstik, Evgeni Sorokin, and Irina T. Sorokina, "Kerr-lens mode-locked Cr:ZnS laser," Opt. Lett. 38, 299-301 (2013)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-38-3-299
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