Measurement-efficient optical wavemeters

P. Potuluri, M. E. Gehm, M. E. Sullivan, D. J. Brady

Research output: Contribution to journalArticlepeer-review

11 Scopus citations


We describe a method for efficiently determining the wavelength of a monochromatic source and provide an experimental proof-of-concept. The photomeasurement efficiency for a wavemeter can be written as η(N, q) = (1 + logqN)/m, where N is the number of spectral channels, q is the number of distinguishable output levels per photodetector, and m is the actual number of photomeasurements made. An implementation is developed that achieves a theoretical efficiency of η(N, q) = 1. The proof-of-concept experiment achieves efficiencies η = O(1), where the deviation from theory is attributable to well-known optical effects and should be correctable in future versions.

Original languageEnglish (US)
Pages (from-to)6219-6229
Number of pages11
JournalOptics Express
Issue number25
StatePublished - Dec 2004
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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