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

doi:10.1364/OL.455191

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

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

VTT Technical Research Centre of Finland

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

Abstract

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).

Original language	English
Pages (from-to)	1689-1692
Number of pages	4
Journal	Optics Letters
Volume	47
Issue number	7
DOIs	https://doi.org/10.1364/OL.455191
Publication status	Published - 1 Apr 2022
MoE publication type	A1 Journal article-refereed

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10.1364/OL.455191Licence: CC BY

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

abstract = "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). ",

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

note = "Funding Information: 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. Publisher Copyright: {\textcopyright} 2022 Optica Publishing Group.",

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doi = "10.1364/OL.455191",

language = "English",

volume = "47",

pages = "1689--1692",

journal = "Optics Letters",

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Optical power detector with broad spectral coverage, high detectivity, and large dynamic range. / Rossi, Jussi (Corresponding Author); Uotila, Juho; Sharma, Sucheta; Hieta, Tuomas; Laurila, Toni; Teissier, Roland; Baranov, Alexei; Ikonen, Erkki; Vainio, Markku.

In: Optics Letters, Vol. 47, No. 7, 01.04.2022, p. 1689-1692.

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

TY - JOUR

T1 - Optical power detector with broad spectral coverage, high detectivity, and large dynamic range

AU - Rossi, Jussi

AU - Uotila, Juho

AU - Sharma, Sucheta

AU - Hieta, Tuomas

AU - Laurila, Toni

AU - Teissier, Roland

AU - Baranov, Alexei

AU - Ikonen, Erkki

AU - Vainio, Markku

N1 - Funding Information: 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. Publisher Copyright: © 2022 Optica Publishing Group.

PY - 2022/4/1

Y1 - 2022/4/1

N2 - 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).

AB - 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).

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JO - Optics Letters

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SN - 0146-9592

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ER -

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

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