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

Jussi Rossi, Juho Uotila, Sucheta Sharma, Tuomas Hieta, Toni Laurila, Roland Teissier, Alexei Baranov, Erkki Ikonen, Markku Vainio

Tutkimustuotos: ArtikkeliTieteellinenvertaisarvioitu

5 Sitaatiot (Scopus)
6 Lataukset (Pure)

Abstrakti

Optical power measurements are needed in practically all technologies based on light. Here, we report a generalpurpose 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 600mW (independent of signal averaging time).

AlkuperäiskieliEnglanti
Sivut1689-1692
Sivumäärä4
JulkaisuOptics Letters
Vuosikerta47
Numero7
DOI - pysyväislinkit
TilaJulkaistu - 2022
OKM-julkaisutyyppiA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä

Rahoitus

Acknowledgment. The work was funded by the Academy of Finland (Project numbers 326444 and 314364) and by the Academy of Finland Flagship Programme, Photonics Research and Innovation (PREIN), decision numbers: 320167 and 320165.

Julkaisufoorumi-taso

  • Jufo-taso 2

!!ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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