Title

Characterization of nonlinear optical materials

Abstract

We discuss the characterization of nonlinear optical processes that give rise to changes in the absorption coefficient and refractive index. We primarily concentrate on methods for determining the dominant nonlinearities present in condensed matter and the responsible physical mechanisms. In extensive studies of a wide variety of materials we have found that there is seldom a single nonlinear process occuring. Often several processes occur simultaneously, sometimes in unison, sometimes competing. It is neseccary to experimentally distinguish and separate these processes in order to understand and model the interaction. There are a variety of methods and techniques for determining the nonlinear optical response, each with its own weaknesses and advantages. In general, it is advisable to use as many complementary techniques as possible over a broad spectral range in order to unambiguously determinine the active nonlinearities. Here we concentrate on the use of nonlinear transmittance, Z-scan and degenerate four-wave mixing experiments as applied to polycrystalline and single crystal semiconductors and dielectric materials.

Publication Date

7-28-1994

Publication Title

Proceedings of SPIE - The International Society for Optical Engineering

Volume

2114

Number of Pages

444-468

Document Type

Article; Proceedings Paper

Identifier

scopus

Personal Identifier

scopus

DOI Link

https://doi.org/10.1117/12.180897

Socpus ID

0028756090 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/0028756090

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