High Resolution Compact Spectrometer Based on Resonance Domain Diffractive Lens

We experimentally demonstrate a compact optical spectrometer with a resolution of up to \sim 0.1 nm suitable for spectral line measurements of laser diodes. This spectrometer is based on a transmission, 4-mm in diameter, and 0.14-NA off-axis binary resonance domain diffractive lens with strong lat...

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Bibliographic Details
Published in:IEEE photonics technology letters 2016-03, Vol.28 (5), p.577-580
Main Authors: Barlev, Omri, Golub, Michael A.
Format: Article
Language:English
Subjects:
Analyzers
Bragg gratings
Calibration
Chromatic dispersion
CMOS integrated circuits
Diffraction
Diffraction gratings
diffractive lens
Gratings
Helium-neon lasers
holography
Laser diodes
Lenses
Spectral lines
Spectrometers
spectroscopy
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Summary:We experimentally demonstrate a compact optical spectrometer with a resolution of up to \sim 0.1 nm suitable for spectral line measurements of laser diodes. This spectrometer is based on a transmission, 4-mm in diameter, and 0.14-NA off-axis binary resonance domain diffractive lens with strong lateral and longitudinal chromatic dispersion. After calibration with a mercury-argon source and a helium-neon laser, we measured the spectrum of RGB laser diodes. The results confirm the theoretical resolution and are in good match to data from optical spectrum analyzer with 0.05-nm resolution.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2015.2500271