Stabilization Of The Exposing Interference Pattern In Holographic Grating Production

Lars-Erik Nilsson; Hans Ahlen

doi:10.1117/12.965630

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10 February 1981 Stabilization Of The Exposing Interference Pattern In Holographic Grating Production

Lars-Erik Nilsson, Hans Ahlen

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Proceedings Volume 0240, Periodic Structures, Gratings, Moire Patterns, and Diffraction Phenomena I; (1981) https://doi.org/10.1117/12.965630
Event: 24th Annual Technical Symposium, 1980, San Diego, United States

Abstract

When fabricating holographic gratings the exposing interference pattern must be stationary. Normally this is achieved by working in a very stable interferometric environment where special care has been taken regarding low dependence of temperature, stable mechanical and optical components. Despite considerable precautions in these respects, reproducible results are difficult to achieve, especially considering the fabrication of multiple exposure gratings i.e. Fourier synthesis gratings. In our laboratory we have developed a technique for fabrication of holographic gratings by using a reference grating and a servosystem to keep the interference pattern stationary. The reference grating monitors both frequency and phase errors. This method allows us to achieve a high outcome in fabrication without utilizing replicas. It is also possible to reproducibly make Fourier synthesized gratings with selectable phase between the different harmonics.

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Lars-Erik Nilsson and Hans Ahlen "Stabilization Of The Exposing Interference Pattern In Holographic Grating Production", Proc. SPIE 0240, Periodic Structures, Gratings, Moire Patterns, and Diffraction Phenomena I, (10 February 1981); https://doi.org/10.1117/12.965630

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