Hostname: page-component-586b7cd67f-rdxmf Total loading time: 0 Render date: 2024-12-01T03:20:57.447Z Has data issue: false hasContentIssue false
  • English
  • Français

semiconductor nanocrystal based saturable absorbers for optical switching applications

Published online by Cambridge University Press:  11 February 2011

James E. Raynolds  and
Michael LoCascio
James E. Raynolds
Affiliation:
School of NanoSciences and NanoEngineering University at Albany, State University of New York, Albany NY 12203
Michael LoCascio
Affiliation:
Evident Technologies, Inc., 216 River Street - Suite 200, Troy, NY 12180
Get access

Abstract

This document presents experimental and theoretical results of an effort to develop semiconductor nanocrystal doped thin films for optical switching applications. Films doped with high quality PbS and PbSe nanocrystals have been fabricated. Measurements of the absorption spectra are compared with theoretical predictions. A general theoretical framework for treating the optical properties of multi-layer dielectric structures containing thin nanocrystal doped layers is used. A simple model (the particle-in-a-sphere) is used as a starting point, however, more sophisticated models (such as those based on k.p theory, or fits to experiment) can easily be incorporated. A prototypical micron-scale Fabry-Perot optical cavity has been constructed and is discussed. Theoretical predictions for the switching behavior of such a structure, upon introduction of the semiconductor nanocrystal material into the optical cavity, are presented. A full-length version of this paper is available at Evident Technologies' web site.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 737 , 2002 , E4.5
Copyright
Copyright © Materials Research Society 2003

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Evident Technologies Inc. www.evidenttech.com (see the section on white papers).Google Scholar
Kang, I. and Wise, F. W., “Electronic structure and optical properties of PbS and PbSe quantum dots”, J. Opt. Soc. Am. B 14, 1632 (1997).Google Scholar
3 Banyai, L. and Koch, S. W., Semiconductor Quantum Dots (World Scientific, Singapore, 1993), p. 12.Google Scholar
4 Kalyaniwalla, N., Haus, J. W., Inguva, R., and Birnboim, M. H., “Intrinsic optical bistability for coated spheroidal particles”, Phys Rev. A 42, 5613 (1990).Google Scholar
5 Haus, J. W., Kalyaniwalla, N., Inguva, R., and Bowden, C. M., “Optical bistability in small metallic particle composits”, J. Appl. Phys. 65, 1420 (1989)Google Scholar
6 Hache, a., LeBlanc, S.-E., LoCascio, M. and Martucci, A., “Optical switching spectroscopy of PbS quantum dots with dual-wavelength pump-probe” (submitted to Elsevier Science).Google Scholar
7 Wundke, K., Auxier, J., Schuelzgen, A., Peyghambarian, N., and Borrelli, N. F., “Room-temperature gain at 1.3 microns in PbS-doped glasses, Appl. Phys. Lett. 75, 3060 (1999).Google Scholar