Cunningham, Colin R

Lee, David

MacLachlan, David Guillaume

Thomson, Robert R

Optical Materials Express

English

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 1st 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. (C) 2013 Optical Society of America</p

Heriot Watt Pure

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revised 21 Aug 2013; accepted 29

revised 21 Aug 2013; accepted 29 Aug 2013; published 6

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Mid-infrared volume phase gratings manufactured using ultrafast laser inscription

David G. MacLachlan

Robert R. Thomson

Colin R. Cunningham

David Lee

Crossref

Mid-Infrared Volume Phase Gratings Manufactured using Ultrafast Laser Inscription

Mid-infrared volume phase gratings manufactured using ultrafast laser inscription

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