Spectral characterization of the linear and quadratic electro-optic effects in GaAs/AlGaAs multiple quantum well waveguides
In: Semiconductor Science and Technology, Jg. 7 (1992), S. 60-65
Online
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Zugriff:
The electro-optic effect in GaAs/AlGaAs multiple quantum well stripe waveguides has been studied extensively for both TE and TM polarization in a spectral range close to the excitonic band edge. The effect has been resolved into two components, a linear electro-optic (LEO) effect and a quadratic electro-optic (QEO) effect. The LEO coefficients r63 and r33 have been measured to be -1.75*10-12 m V-1 and zero respectively, similar to that of bulk GaAs, with no significant wavelength dependence. The quadratic effect, however, has been shown to be highly wavelength-dependent and enhanced compared with bulk GaAs. A QEO coefficient as large as 140*10-20 m2 V-2 has been measured at photon energies 28 meV from the lowest energy exciton. The spectral dependence of the quadratic effect has been studied for both TE and TM polarization.
| Titel: |
Spectral characterization of the linear and quadratic electro-optic effects in GaAs/AlGaAs multiple quantum well waveguides
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| Autor/in / Beteiligte Person: | J S Roberts ; C D W Wilkinson ; Jennings, A |
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| Zeitschrift: | Semiconductor Science and Technology, Jg. 7 (1992), S. 60-65 |
| Veröffentlichung: | IOP Publishing, 1992 |
| Medientyp: | unknown |
| ISSN: | 1361-6641 (print) ; 0268-1242 (print) |
| DOI: | 10.1088/0268-1242/7/1/010 |
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