Spectral super-resolution spectroscopy using a random laser

Super-resolution microscopy refers to a powerful set of imaging techniques that overcome the diffraction limit. Some of these techniques, the importance of which was recognized by the 2014 Nobel Prize for chemistry, are based on the concept of image reconstruction by spatially sparse sampling. Here,...

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Veröffentlicht in:Nature photonics 2020-03, Vol.14 (3), p.177-182
Hauptverfasser: Boschetti, Alice, Taschin, Andrea, Bartolini, Paolo, Tiwari, Anjani Kumar, Pattelli, Lorenzo, Torre, Renato, Wiersma, Diederik S.
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container_issue 3
container_start_page 177
container_title Nature photonics
container_volume 14
creator Boschetti, Alice
Taschin, Andrea
Bartolini, Paolo
Tiwari, Anjani Kumar
Pattelli, Lorenzo
Torre, Renato
Wiersma, Diederik S.
description Super-resolution microscopy refers to a powerful set of imaging techniques that overcome the diffraction limit. Some of these techniques, the importance of which was recognized by the 2014 Nobel Prize for chemistry, are based on the concept of image reconstruction by spatially sparse sampling. Here, we introduce the concept of super-resolution spectroscopy based on sparse sampling in the frequency domain, and show that this can be naturally achieved using a random laser source. In its chaotic regime, the emission spectrum of a random laser features sharp spikes at uncorrelated frequencies that are sparsely distributed over the emission bandwidth. These narrow lasing modes probe stochastically the spectral response of a sample, allowing it to be reconstructed with a resolution exceeding that of the spectrometer. We envision that the proposed technique will inspire a new generation of simple, cheap, high-resolution spectroscopy tools with a reduced footprint. Spectral super-resolution spectroscopy is realized by exploiting a random laser that chaotically produces sharply spiked spectral lines, representing a new generation of simple, compact and cost-effective spectroscopy tools.
doi_str_mv 10.1038/s41566-019-0558-4
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subjects 140/125
639/624
639/925
Applied and Technical Physics
Emissions
Image processing
Image reconstruction
Imaging techniques
Lasers
Line spectra
Organic chemistry
Physics
Physics and Astronomy
Quantum Physics
Sampling
Spectral sensitivity
Spectroscopy
title Spectral super-resolution spectroscopy using a random laser
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