Overcoming the speckle correlation limit to achieve a fiber wavemeter with attometer resolution

Graham D. Bruce; Laura O’Donnell; Mingzhou Chen; Kishan Dholakia

doi:10.1364/OL.44.001367

Overcoming the speckle correlation limit to achieve a fiber wavemeter with attometer resolution

Graham D. Bruce, Laura O’Donnell, Mingzhou Chen, Kishan Dholakia

Department of Physics

Research output: Contribution to journal › Article › peer-review

42 Citations (Scopus)

Abstract

The measurement of the wavelength of light using speckle is a promising tool for the realization of compact and precise wavemeters and spectrometers. However, the resolution of these devices is limited by strong correlations between the speckle patterns produced by closely spaced wavelengths. Here, we show how principal component analysis of speckle images provides a route to overcome this limit. Using this, we demonstrate a compact wavemeter that measures attometer-scale wavelength changes of a stabilized diode laser, eight orders of magnitude below the speckle correlation limit.

Original language	English
Pages (from-to)	1367-1370
Number of pages	4
Journal	Optics Letters
Volume	44
Issue number	6
DOIs	https://doi.org/10.1364/OL.44.001367
Publication status	Published - 2019

Bibliographical note

Funding Information:
Leverhulme Trust (RPG-2017-197); Engineering and Physical Sciences Research Council (EPSRC) (EP/ R004854/1, EP/R019541/1).

Publisher Copyright:
© 2019 Optical Society of America.

All Science Journal Classification (ASJC) codes

Atomic and Molecular Physics, and Optics

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10.1364/OL.44.001367

Cite this

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abstract = "The measurement of the wavelength of light using speckle is a promising tool for the realization of compact and precise wavemeters and spectrometers. However, the resolution of these devices is limited by strong correlations between the speckle patterns produced by closely spaced wavelengths. Here, we show how principal component analysis of speckle images provides a route to overcome this limit. Using this, we demonstrate a compact wavemeter that measures attometer-scale wavelength changes of a stabilized diode laser, eight orders of magnitude below the speckle correlation limit.",

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AB - The measurement of the wavelength of light using speckle is a promising tool for the realization of compact and precise wavemeters and spectrometers. However, the resolution of these devices is limited by strong correlations between the speckle patterns produced by closely spaced wavelengths. Here, we show how principal component analysis of speckle images provides a route to overcome this limit. Using this, we demonstrate a compact wavemeter that measures attometer-scale wavelength changes of a stabilized diode laser, eight orders of magnitude below the speckle correlation limit.

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Overcoming the speckle correlation limit to achieve a fiber wavemeter with attometer resolution

Abstract

Bibliographical note

All Science Journal Classification (ASJC) codes

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