Optically Driven Domain Instability and High-Frequency Current Oscillations in Photoexcited GaAs under Nonuniform Electron Heating

• Authors: L. Subačius , I. Kašalynas
• Languages of publication: EN

Abstracts

EN

Fast domain instabilities induced by light-interference pattern in dc-biased semi-insulating GaAs are investigated. Current oscillations in GHz-frequency range are observed due to nonuniform electron heating and domains formation in light-induced grating. Characteristic features of the oscillations under various experimental conditions are presented. Numerical calculations based on the hot-electron hydrodynamic model are used to explain the observed nonlinear features under various external bias and periods of the grating.

Keywords

EN

71.55.Eq; 72.20.Ht

Discipline

• 71.55.Eq: III-V semiconductors
• 72.20.Ht: High-field and nonlinear effects

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2005
• Volume: 107
• Issue: 2
• Pages: 275-279

Dates

published

2005-02

received

2004-08-22

Contributors

author

L. Subačius

• Semiconductor Physics Institute, A. Goštauto 11, 01108 Vilnius, Lithuania

author

I. Kašalynas

• Semiconductor Physics Institute, A. Goštauto 11, 01108 Vilnius, Lithuania

References

• 1. M. Segev, B. Collings, D. Abraham, Phys. Rev. Lett., 76, 3798, 1996
• 2. L. Subacius, K. Jarasiunas, E. Starikov, V. Gru zinskis, P. Shiktorov, Phys. Status Solidi B, 204, 473, 1997
• 3. L.L. Bonilla, M. Kindelan, P.J. Hernando, Phys. Rev. B, 58, 12844, 1998
• 4. Y.-H. Shiau, Phys. Rev. B, 60, 15534, 1999
• 5. L. Subacius, E. Starikov, P. Shiktorov, V. Gruzinskis, K. Jarasiunas, J. Opt. Soc. Am. B, 15, 2045, 1998
• 6. L. Subacius, I. Kasalynas, R. Aleksiejunas, K. Jarasiunas, Appl. Phys. Lett., 83, 1557, 2003

Identifiers

DOI

10.12693/APhysPolA.107.275