Harnessing speckle for a sub-femtometre resolved broadband wavemeter and laser stabilization

Nikolaus Klaus Metzger, Roman Spesyvtsev, Graham D. Bruce, Bill Miller, Gareth T. Maker, Graeme Malcolm, Michael Mazilu and Kishan Dholakia ()
Additional contact information
Nikolaus Klaus Metzger: SUPA, School of Physics and Astronomy, University of St Andrews
Roman Spesyvtsev: SUPA, School of Physics and Astronomy, University of St Andrews
Graham D. Bruce: SUPA, School of Physics and Astronomy, University of St Andrews
Bill Miller: M Squared Lasers Ltd
Gareth T. Maker: M Squared Lasers Ltd
Graeme Malcolm: M Squared Lasers Ltd
Michael Mazilu: SUPA, School of Physics and Astronomy, University of St Andrews
Kishan Dholakia: SUPA, School of Physics and Astronomy, University of St Andrews

Nature Communications, 2017, vol. 8, issue 1, 1-8

Abstract: Abstract The accurate determination and control of the wavelength of light is fundamental to many fields of science. Speckle patterns resulting from the interference of multiple reflections in disordered media are well-known to scramble the information content of light by complex but linear processes. However, these patterns are, in fact, exceptionally rich in information about the illuminating source. We use a fibre-coupled integrating sphere to generate wavelength-dependent speckle patterns, in combination with algorithms based on the transmission matrix method and principal component analysis, to realize a broadband and sensitive wavemeter. We demonstrate sub-femtometre wavelength resolution at a centre wavelength of 780 nm, and a broad calibrated measurement range from 488 to 1,064 nm. This compares favourably to the performance of conventional wavemeters. Using this speckle wavemeter as part of a feedback loop, we stabilize a 780 nm diode laser to achieve a linewidth better than 1 MHz.

Date: 2017
References: Add references at CitEc
Citations:

Downloads: (external link)
https://www.nature.com/articles/ncomms15610 Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_ncomms15610

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/ncomms15610

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().