Universal single-lens interferometry unveils ultra-precise devices from scrap

Pooja Munjal; Kamal P. Singh

doi:10.1117/12.2570920

26 August 2020 Universal single-lens interferometry unveils ultra-precise devices from scrap

Pooja Munjal, Kamal P. Singh

Proceedings Volume 11508, Unconventional Imaging and Adaptive Optics 2020; 115080L (2020) https://doi.org/10.1117/12.2570920
Event: SPIE Optical Engineering + Applications, 2020, Online Only

Abstract

The application of precision interferometers is generally restricted to expensive and smooth high-quality surfaces. Here, we offer a route to ultimate miniaturization of interferometer by integrating beam splitter, reference mirror and light collector into a single optical element, an interference lens (iLens), which produces stable high-contrast fringes from in situ surface of paper, wood, plastic, rubber, human skin, etc. The principle of iLens interferometry has been exploited to build a variety of compact devices, such as a paper-based optical pico-balance, having 1000 times higher sensitivity and speed, when compared with a high-end seven-digit electronic balance. Furthermore, we used cloth, paper, polymer-films to readily construct broadband acoustic sensors possessing matched or higher sensitivity when compared with piezo and electromagnetic sensors. Our work opens path for affordable yet ultra-precise frugal photonic devices and universal micro-interferometers for imaging.

Conference Presentation

Citation Download Citation

Pooja Munjal and Kamal P. Singh "Universal single-lens interferometry unveils ultra-precise devices from scrap", Proc. SPIE 11508, Unconventional Imaging and Adaptive Optics 2020, 115080L (26 August 2020); https://doi.org/10.1117/12.2570920

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