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New opportunities of freeform gratings using diamond machining

Bourgenot, Cyril and Calcines, Ariadna and Sharples, Ray M. (2018) 'New opportunities of freeform gratings using diamond machining.', in Proceedings Volume 10706, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation III. .


With the recent development of new ultra fine aluminium alloys and progress in the field of directly machined freeform surfaces, diamond machined freeform gratings could play an important part in future spectrographs or integral field units, particularly at SWIR and LWIR wavelengths where the improved thermal performance of metal optics at cryogenic temperatures is well established. Freeform diamond machined gratings can offer a cost-effective, compact, and flexible alternative to gratings fabricated by other methods such as ion beam etching or complement these technologies. In this paper, both the advantages and limitations of 5 axis diamond machined freeform gratings are presented and potential applications are discussed.

Item Type:Book chapter
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Publisher statement:Copyright (2018) Society of Photo Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
Date accepted:No date available
Date deposited:17 January 2023
Date of first online publication:11 July 2018
Date first made open access:17 January 2023

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