Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Speckle-based hyperspectral imaging combining multiple scattering and compressive sensing in nanowire mats

Not Accessible

Your library or personal account may give you access

Abstract

Encoding of spectral information onto monochrome imaging cameras is of interest for wavelength multiplexing and hyperspectral imaging applications. Here, the complex spatiospectral response of a disordered material is used to demonstrate retrieval of a number of discrete wavelengths over a wide spectral range. Strong, diffuse light scattering in a semiconductor nanowire mat is used to achieve a highly compact spectrometer of micrometer thickness, transforming different wavelengths into distinct speckle patterns with nanometer sensitivity. Spatial multiplexing is achieved through the use of a microlens array, allowing simultaneous imaging of many speckles, ultimately limited by the size of the diffuse spot area. The performance of different information retrieval algorithms is compared. A compressive sensing algorithm exhibits efficient reconstruction capability in noisy environments and with only a few measurements.

© 2017 Optical Society of America

Full Article  |  PDF Article
More Like This
Snapshot fiber spectral imaging using speckle correlations and compressive sensing

Rebecca French, Sylvain Gigan, and Otto l. Muskens
Opt. Express 26(24) 32302-32316 (2018)

Single-shot chemical detection and identification with compressed hyperspectral Raman imaging

Jonathan V. Thompson, Joel N. Bixler, Brett H. Hokr, Gary D. Noojin, Marlan O. Scully, and Vladislav V. Yakovlev
Opt. Lett. 42(11) 2169-2172 (2017)

Wavefront sensing with a thin diffuser

Pascal Berto, Hervé Rigneault, and Marc Guillon
Opt. Lett. 42(24) 5117-5120 (2017)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (3)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Metrics

Select as filters


Select Topics Cancel
© Copyright 2022 | Optica Publishing Group. All Rights Reserved