A compact system for multispectral quantitative phase imaging based on a lens-in-lens common-path interferometer

Olga Polschikova; Alexander Machikhin; Alina Ramazanova; Vitold Pozhar

doi:10.1117/12.2520647

23 April 2019 A compact system for multispectral quantitative phase imaging based on a lens-in-lens common-path interferometer

Olga Polschikova, Alexander Machikhin, Alina Ramazanova, Vitold Pozhar

Author Affiliations +

Proceedings Volume 11030, Holography: Advances and Modern Trends VI; 1103005 (2019) https://doi.org/10.1117/12.2520647
Event: SPIE Optics + Optoelectronics, 2019, Prague, Czech Republic

Abstract

A compact and cost-effective lens-in-lens common-path interferometer for quantitative phase imaging of objects in white light as well as in narrow spectral bands is proposed. The optical system of the interferometer includes three lenses. The first component of the interferometer consists of two lenses with the same focal length, but different diameters. The lens with the smaller diameter is installed inside the hole in the bigger diameter lens. The light wave is thus divided into two beams. The second component is a single lens. A pinhole is placed between the first and the second components in their joint focal plane. The pinhole serves as a spatial filter to form a reference wavefront from one of the beams passed through the first component. The reference and the object beams are collected by the second component, and the digital holographic pattern resulting from their interference is registered by the camera. The performance of the system is demonstrated by quantitative phase imaging of red blood cells, onion cells and nylon fiber with use of green and red laser light sources.

Citation Download Citation

Olga Polschikova, Alexander Machikhin, Alina Ramazanova, and Vitold Pozhar "A compact system for multispectral quantitative phase imaging based on a lens-in-lens common-path interferometer", Proc. SPIE 11030, Holography: Advances and Modern Trends VI, 1103005 (23 April 2019); https://doi.org/10.1117/12.2520647

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KEYWORDS

Interferometers

Digital holography

Holograms

Phase imaging

Blood

Lenses

Imaging systems

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