Heterodyne phase-shift-amplified interferometry with improved shot-noise-limited sensitivity and immunity to RIN

Egor Liokumovitch; Shmuel Sternklar

doi:10.1364/OL.387359

Heterodyne phase-shift-amplified interferometry with improved shot-noise-limited sensitivity and immunity to RIN

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Abstract

Phase-shift-amplified interferometry (PAI) is demonstrated using a heterodyne detection scheme. We demonstrate a sensitivity amplification factor of 35, giving 7.9 · 10⁻⁴ rad, or 40 pm displacement, resolution. This was achieved due to the improved immunity of PAI to the total relative intensity noise (RIN) of the system. In addition, we predict a factor of √2 fundamental improvement to shot-noise-limited phase-shift sensitivity as compared to a regular heterodyne Mach-Zehnder interferometer.

Original language	English
Pages (from-to)	1950-1953
Number of pages	4
Journal	Optics Letters
Volume	45
Issue number	7
DOIs	https://doi.org/10.1364/OL.387359
State	Published - 1 Apr 2020

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10.1364/OL.387359

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abstract = "Phase-shift-amplified interferometry (PAI) is demonstrated using a heterodyne detection scheme. We demonstrate a sensitivity amplification factor of 35, giving 7.9 · 10−4 rad, or 40 pm displacement, resolution. This was achieved due to the improved immunity of PAI to the total relative intensity noise (RIN) of the system. In addition, we predict a factor of √2 fundamental improvement to shot-noise-limited phase-shift sensitivity as compared to a regular heterodyne Mach-Zehnder interferometer.",

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Heterodyne phase-shift-amplified interferometry with improved shot-noise-limited sensitivity and immunity to RIN

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