Abstract
The refractive nonlinearities due to bandfilling and the plasma effect in a multiquantum well buried heterostructure semiconductor waveguide under reverse bias are probed using self-phase modulation techniques. Modeling of the self-phase modulation has allowed the magnitude of the phase modulation and nonlinearity recovery time constant to be extracted. π radians phase shift has been obtained for a coupled pulse energy of 32 pJ. The nonlinearity recovery time constant is 18±3 ps for an applied field of 34 MV m-1, limited by thermionic emission from the quantum wells.
Original language | English |
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Pages (from-to) | 2657-2659 |
Number of pages | 3 |
Journal | Applied Physics Letters |
Volume | 65 |
Issue number | 21 |
DOIs | |
Publication status | Published - 1 Dec 1994 |
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)