Mid-infrared laser emission from Cr:ZnS channel waveguide fabricated by femtosecond laser helical writing.
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ABSTRACT: The operation of a mid-infrared laser at 2244 nm in a Cr:ZnS polycrystalline channel waveguide fabricated using direct femtosecond laser writing with a helical movement technique is demonstrated. A maximum power output of 78 mW and an optical-to-optical slope efficiency of 8.6% are achieved. The compact waveguide structure with 2 mm length was obtained through direct femtosecond laser writing, which was moved on a helical trajectory along the laser medium axis and parallel to the writing direction.
SUBMITTER: Peng YP
PROVIDER: S-EPMC4686910 | biostudies-other | 2015
REPOSITORIES: biostudies-other
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