High-precision cavity spectroscopy using high-frequency squeezed light

Junker J, Wilken D, Huntington E, Heurs M (2021)

Publication Type: Journal article

Publication year: 2021

Journal

Optics Express Optical Society of America

Book Volume: 29

Pages Range: 6053-6068

Journal Issue: 4

DOI: 10.1364/OE.416713

Abstract

In this article, we present a novel spectroscopy technique that improves the signal-to-shot-noise ratio without the need to increase the laser power. Detrimental effects by technical noise sources are avoided by frequency-modulation techniques (frequency up-shifting). Superimposing the signal on non-classical states of light leads to a reduced quantum noise floor. Our method reveals in a proof-of-concept experiment small signals at Hz to kHz frequencies even below the shot noise limit. Our theoretical calculations fully support our experimental findings. The proposed technique is interesting for applications such as high-precision cavity spectroscopy, e.g., for explosive trace gas detection where the specific gas might set an upper limit for the laser power employed.

Involved external institutions

Gottfried Wilhelm Leibniz Universität Hannover DE Germany (DE) Australian National University (ANU) AU Australia (AU)

How to cite

APA:

Junker, J., Wilken, D., Huntington, E., & Heurs, M. (2021). High-precision cavity spectroscopy using high-frequency squeezed light. Optics Express, 29(4), 6053-6068. https://doi.org/10.1364/OE.416713

MLA:

Junker, Jonas, et al. "High-precision cavity spectroscopy using high-frequency squeezed light." Optics Express 29.4 (2021): 6053-6068.

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