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Proceedings Paper • Open Access

Nondegenerate two- and three-photon nonlinearities in semiconductors

Paper Abstract

Two-photon absorption, 2PA, in semiconductors is enhanced by two orders of magnitude due to intermediate-state resonance enhancement, ISRE, for very nondegenerate (ND) photon energies. Associated with this enhancement in loss is enhancement of the nonlinear refractive index, n2. Even larger enhancement of three-photon absorption is calculated and observed. These large nonlinearities have implications for applications including ND two-photon gain and twophoton semiconductor lasers. Calculations for enhancement of ND-2PA in quantum wells is also presented showing another order of magnitude increase in 2PA. Potential devices include room temperature gated infrared detectors for LIDAR and all-optical switches.

Paper Details

Date Published: 13 May 2016
PDF: 9 pages
Proc. SPIE 9835, Ultrafast Bandgap Photonics, 98350A (13 May 2016);
Show Author Affiliations
Matthew Reichert, CREOL, The College of Optics and Photonics, Univ. of Central Florida (United States)
Princeton Univ. (United States)
Peng Zhao, CREOL, The College of Optics and Photonics, Univ. of Central Florida (United States)
Himansu S. Pattanaik, CREOL, The College of Optics and Photonics, Univ. of Central Florida (United States)
David J. Hagan, CREOL, The College of Optics and Photonics, Univ. of Central Florida (United States)
Eric W. Van Stryland, CREOL, The College of Optics and Photonics, Univ. of Central Florida (United States)


Published in SPIE Proceedings Vol. 9835:
Ultrafast Bandgap Photonics
Michael K. Rafailov; Eric Mazur, Editor(s)

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