Nanosecond polarization-sensitive IR photoresponse of CuSe/Se nanocomposite film.

Authors

Gennady M Mikheev, Arseniy E Fateev, Viatcheslav V Vanyukov, Vladimir Ya Kogai, Tatyana N Mogileva, Yuri P Svirko

Published in

Optics letters. Volume 51. Issue 15. Pages 4300-4303. Aug 01, 2026.

Abstract

Using sequential vacuum thermal deposition of Se and Cu onto a glass substrate, we synthesized plasmonic CuSe/Se thin-film material and measured its absorption coefficient, complex refractive index, and complex dielectric permittivity from 240 to 2500 nm. Experimental results demonstrate that in the infrared range, the photoresponse of the film exhibits high sensitivity to both the polarization and the angle of incidence of the nanosecond excitation laser pulse. At oblique incidence, the laser-to-photocurrent conversion coefficient is a linear function of the excitation photon energy across a broad wavelength range of 1.5-3.5 μm (0.827-0.354 eV).

PMID:
42537174
Bibliographic data and abstract were imported from PubMed on 01 Aug 2026.

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