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

Anomalous retroreflection from strongly absorbing nanoporous semiconductors

Not Accessible

Your library or personal account may give you access

Abstract

Pronounced retroreflection behavior is reported for a fishnet nanoporous strongly absorbing semiconductor material. Retroreflection features a half-cone about 0.35rad along with diffusive specular reflection for all angles of incidence. Retroreflection is apparent by the naked eye with daylight illumination and exhibits no selectivity with respect to wavelength and polarization of incident light featuring minor depolarization of retroreflected light. The reflectance in the backward direction measures 12% with respect to a white scattering etalon. The phenomenon can be classified neither as coherent backscattering nor as Anderson localization of light. The primary model includes light scattering from strongly absorptive and refractive superwavelength clusters existing within the porous fishnet structure. A reasonable qualitative explanation is based on the fact that strict retroreflection obeys shorter paths inside absorbing medium, whereas all alternative paths will lead to stronger absorption of light.

© 2011 Optical Society of America

Full Article  |  PDF Article
More Like This
Retroreflection from rough surfaces

T. S. Trowbridge
J. Opt. Soc. Am. 68(9) 1225-1242 (1978)

Excitability in a semiconductor laser with saturable absorber

Sylvain Barbay, Robert Kuszelewicz, and Alejandro M. Yacomotti
Opt. Lett. 36(23) 4476-4478 (2011)

Time-domain depolarization of waves retroreflected from dense colloidal media

A. Dogariu, C. Kutsche, P. Likamwa, G. Boreman, and B. Moudgil
Opt. Lett. 22(9) 585-587 (1997)

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 (4)

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

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved