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Title: A simple scanning spectrometer based on a stretchable elastomeric reflective grating

We report a scanning optical spectrometer based on the use of a stretchable elastomeric reflective grating. The grating is obtained by supersonic cluster beam implantation of silver nanoparticles on polydimethylsiloxane previously grooved by molding to create a replica of a commercial digital versatile disk grating. The use of a stretchable grating allows the spectrometer spanning the whole optical wavelength range by solely extending the diffraction element by more than 100% of its original dimensions. The stretchable reflective optical grating shows excellent performances and stability upon thousands of stretching cycles. The use of this elastomeric element makes the optical layout and the mechanics of the spectrometer extremely simple and advantageous for those applications where spectral resolution is not a major requirement. As a proof of principle, we present the absorption spectrum of Rhodamine B in solution obtained by our spectrometer and compared to commercial instruments.
Authors:
;  [1] ;  [2] ; ;  [1] ;  [3]
  1. CIMAINA and Dipartimento di Fisica, Università di Milano, via Celoria 16, 20133 Milano (Italy)
  2. (Italy)
  3. WISE srl, Piazza Duse 2, 20122 Milano (Italy)
Publication Date:
OSTI Identifier:
22283297
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 104; Journal Issue: 6; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 77 NANOSCIENCE AND NANOTECHNOLOGY; ABSORPTION SPECTRA; CLUSTER BEAMS; COMPARATIVE EVALUATIONS; DIFFRACTION; DIFFRACTION GRATINGS; ELASTOMERS; MOLDING; NANOSTRUCTURES; OPTICAL SPECTROMETERS; PARTICLES; PERFORMANCE; PHASE STABILITY; SILVER