Document Type

Article

Publication Date

3-15-2021

Abstract

In this paper, we achieve the shot-noise limit using straightforward image-post-processing techniques with experimental multi-shot digital holography data (i.e., off-axis data composed of multiple noise and speckle realizations). First, we quantify the effects of frame subtraction (of the mean reference-only frame and the mean signal-only frame from the digital-hologram frames), which boosts the signal-to-noise ratio (SNR) of the baseline dataset with a gain of 2.4 dB. Next, we quantify the effects of frame averaging, both with and without the frame subtraction. We show that even though the frame averaging boosts the SNR by itself, the frame subtraction and the stability of the digital-hologram fringes are necessary to achieve the shot-noise limit. Overall, we boost the SNR of the baseline dataset with a gain of 8.1 dB, which is the gain needed to achieve the shot-noise limit.

Comments

This article was published under an Open Access agreement with the Optical Society of America, in volume 29 of Optics Express, as cited below. Posted on AFIT Scholar in accordance with OSA allowances.

DOI

10.1364/OE.418948

Source Publication

Optics Express

Included in

Optics Commons

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