Measurement of refractive nonlinearities in GaAs above bandgap energy

Authors
Martinelli, M Gomes, L Horowicz, RJ
Citation
M. Martinelli et al., Measurement of refractive nonlinearities in GaAs above bandgap energy, APPL OPTICS, 39(33), 2000, pp. 6193-6196
Citations number
16
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Optics & Acoustics
Journal title
APPLIED OPTICS
ISSN journal
00036935 → ACNP
Volume
39
Issue
33
Year of publication
2000
Pages
6193 - 6196
Database
ISI
SICI code
0003-6935(20001120)39:33<6193:MORNIG>2.0.ZU;2-3
Abstract
We present a technique for single-beam measurement of the optical nonlinear ity in GaAs for photon energies above the bandgap. We measured the real and the imaginary parts of the nonlinear refractive index of a bulk crystal by using the change in reflection of dye laser pulses (10 ns, 538 nm). The va lues obtained, n(2) = (7.8 +/- 0.6) x 10(-8) cm(2)/W and kappa (2) = (-2.8 +/- 0.7) x 10(-8) cm(2)/W, are discussed. (C) 2000 Optical Society of Ameri ca OCIS codes: 190.4350, 190.3270.