✦ LIBER ✦

Biexcitonic effects in the time integrated four-wave mixing with picosecond pulses

✍ Scribed by T. Aoki; Yu.P. Svirko; M. Kuwata-Gonokami

Publisher: Elsevier Science
Year: 2003
Tongue: English
Weight: 108 KB
Volume: 127
Category: Article
ISSN: 0038-1098
DOI: 10.1016/s0038-1098(03)00415-0

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✦ Synopsis

We propose a simple method to estimate the biexcitonic contribution to the excitonic non-linearity. The method is based on the time integrated four-wave mixing (TI FWM) with picosecond pulses. The TI FWM signal, which is measured as a function of the delay between pump and test pulses, shows shift towards positive and negative time delay when the laser is tuned at the exciton and biexciton resonance, respectively. We show theoretically that the magnitude of the shift allows us to estimate the biexcitonic contribution to the third-order non-linearity at the fundamental band edge.

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