High-Speed Quadratic Electrooptic Nonlinearity in dc-Biased InP |
| L. Subačiusa, I. Kašalynasa, M. Vingelisa, R. Aleksiejūnasb and K. Jarašiūnasb
aSemiconductor Physics Institute, Goštauto 11, 01108 Vilnius, Lithuania bInstitute of Materials Science and Applied Research, Vilnius University, Saulétekio 9-3, 10222 Vilnius, Lithuania |
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| Received: 22 08 2004; |
| We present experimental data on degenerate four-wave mixing as well as simulation results of fast optical nonlinearities in highly-excited semi-insulating InP under applied dc-field. Hot-electron transport governed enhancement of optical nonlinearity is obtained by applying a dc-field of 10-14 kV/cm at full-modulation depth of a light-interference pattern. The hydrodynamic model, which incorporates both free-carrier and photorefractive nonlinearities is used to explain the experimentally observed features. We show that the enhancement of optical nonlinearity is due to the quadratic electrooptic effect. |
| DOI: 10.12693/APhysPolA.107.280 PACS numbers:71.55.Eq, 72.20.Ht |