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Article Dans Une Revue Opt.Lett. Année : 2022

Optical power detector with broad spectral coverage, high detectivity, and large dynamic range

Jussi Rossi
Juho Uotila
Sucheta Sharma
  • Fonction : Auteur
Tuomas Hieta
  • Fonction : Auteur
Toni Laurila
  • Fonction : Auteur
Erkki Ikonen
  • Fonction : Auteur
Markku Vainio

Résumé

Optical power measurements are needed in practically all technologies based on light. Here, we report a general-purpose optical power detector based on the photoacoustic effect. Optical power incident on the detector’s black absorber produces an acoustic signal, which is further converted into an electrical signal using a silicon-cantilever pressure transducer. We demonstrate an exceptionally large spectral coverage from ultraviolet to far infrared, with the possibility for further extension to the terahertz region. The linear dynamic range of the detector reaches 80 dB, ranging from a noise-equivalent power of 6 nW/Hz to 600 mW (independent of signal averaging time).
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Origine : Publication financée par une institution

Dates et versions

hal-03210361 , version 1 (01-06-2022)

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Jussi Rossi, Juho Uotila, Sucheta Sharma, Tuomas Hieta, Toni Laurila, et al.. Optical power detector with broad spectral coverage, high detectivity, and large dynamic range. Opt.Lett., 2022, 47 (7), pp.1689-1692. ⟨10.1364/OL.455191⟩. ⟨hal-03210361⟩
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