Mid-Infrared Volume Phase Gratings Manufactured using Ultrafast Laser Inscription
نویسندگان
چکیده
We report on the ultrafast laser inscription (ULI) of volume phase gratings inside gallium lanthanum sulphide (GLS) chalcogenide glass substrates. The effect of laser pulse energy and grating thickness on the dispersive properties of the gratings is investigated, with the aim of improving the performance of the gratings in the mid-infrared. The grating with the optimum performance in the mid-infrared exhibited a 1 order absolute diffraction efficiency of 61% at 1300 nm and 24% at 2640 nm. Based on the work reported here, we conclude that ULI is promising for the fabrication of mid-infrared volume phase gratings, with potential applications including astronomical instrumentation and remote sensing. ©2013 Optical Society of America OCIS codes: (050.1950) Diffraction gratings; (050.7330) Volume gratings; (140.3390) Laser materials processing; (230.1950) Diffraction gratings.
منابع مشابه
AFRL-AFOSR-UK-TR-2016-0022 Mid-infrared photonic devices fabricated by ultrafast laser inscription
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