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Intersubband absorption saturation in InGaAs-AlAsSb quantum wells

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5 Author(s)
Gopal, A.V. ; Femtosecond Technol. Res. Assoc., Tsukuba ; Yoshida, H. ; Neogi, A. ; Georgiev, N.
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We present intersubband absorption saturation studies in InGaAs-AlAsSb quantum wells. We carried out a density matrix calculation to simulate the pulsed excitation condition after including the dephasing time and the short pulse profile to estimate the saturation intensity (IS). We compare the calculated results with measurements for both resonant and nonresonant excitation. We also present our results on the effect of pulsewidth on Is estimation.

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Quantum Electronics, IEEE Journal of  (Volume:38 ,  Issue: 11 )