Noise reduction in complex light

Jonathan Pinnell; Asher Klug; Andrew Forbes

doi:10.1117/12.2578848

6 March 2021 Noise reduction in complex light

Jonathan Pinnell, Asher Klug, Andrew Forbes

Proceedings Volume 11701, Complex Light and Optical Forces XV; 117010A (2021) https://doi.org/10.1117/12.2578848
Event: SPIE OPTO, 2021, Online Only

Conference Poster

Abstract

Noise is an unavoidable feature in most optical systems and many techniques exist to minimize its adverse effects. In this regard, spatial filtering is a commonly deployed technique to improve the quality of laser beams by optically filtering the noise. In the “textbook” example, the noise is usually assumed to be high frequency and the laser beam, Gaussian. In this case, the filtering is achieved by a simple pinhole placed at the common focal plane of two lenses. In this work, we describe how this process can be generalized to arbitrary beam profiles: spatial filtering of complex light.

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Citation Download Citation

Jonathan Pinnell, Asher Klug, and Andrew Forbes "Noise reduction in complex light", Proc. SPIE 11701, Complex Light and Optical Forces XV, 117010A (6 March 2021); https://doi.org/10.1117/12.2578848

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