Site-selective four-wave-mixing experiments in GaAs/(GaAl) As multiple quantum wells
โ Scribed by G. Bongiovanni; A. Mura; J. L. Staehli
- Book ID
- 105582791
- Publisher
- Italian Physical Society
- Year
- 1995
- Tongue
- English
- Weight
- 327 KB
- Volume
- 17
- Category
- Article
- ISSN
- 0392-6737
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We perform spectrally resolved degenerate four wave mixing (DFWM) measurements by resonantly exciting 1s heavy hole excitons in 8 and 17:5 nm wide GaAs multiple quantum wells (MQW) with subpicosecond laser pulses. The signal is detected in a self-di raction mode in backward geometry. The DFWM spectr
We investigate the dependence of four-wave mixing response on the photon energy close to the fundamental exciton (X) resonance in GaAs quantum wells. We find that crosspolarised incident fields give rise to a non-linear signal which decays faster at energies below the \(\mathrm{X}\) line centre than