Exploring shot noise and Laser Doppler imagery with heterodyne holography

TL;DR

This paper discusses how heterodyne holography, a digital holography variant, can be used for sensitive shot noise-limited measurements and Laser Doppler imaging to analyze motion.

Contribution

It demonstrates the versatility of heterodyne holography in achieving shot noise sensitivity and its application to Laser Doppler imaging for motion analysis.

Findings

Achieves shot noise-limited sensitivity in heterodyne holography.

Enables Laser Doppler imaging with adjustable frequency tuning.

Provides reliable analysis of various motion types.

Abstract

Heterodyne Holography is a variant of Digital Holography, where the optical frequencies of signal and reference arms can be freely adjusted by acousto-optic modulators. Heterodyne Holography is an extremely versatile and reliable holographic technique, which is able the reach the shot noise limit in sensitivity at very low levels of signal. Frequency tuning enables Heterodyne Holography to become a Laser Doppler imaging technique that is able to analyze various kinds of motion.