Electronic Resource
Woodbury, NY
:
American Institute of Physics (AIP)
Applied Physics Letters
60 (1992), S. 192-194
ISSN:
1077-3118
Source:
AIP Digital Archive
Topics:
Physics
Notes:
We study the optical nonlinearity just at the exciton resonance in ZnSe at 8 K. A sample with thickness of 2.4 μm is grown by molecular-beam epitaxy on a GaAs substrate. Using reflection-type polarization spectroscopy with weak picosecond optical pulses, we observe nonlinear phase shift, being free from incoherent processes caused by the accumulation of excitons. A huge nonlinear phase shift, 0.15 deg cm2/kW, whose effective χ(3) is over 10−2 esu, with a response time shorter than 20 ps is obtained.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.106960
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