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Volumn 85, Issue 11, 2012, Pages

Role of interband and photoinduced absorption in the nonlinear refraction and absorption of resonantly excited PbS quantum dots around 1550 nm

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EID: 84859010188     PISSN: 10980121     EISSN: 1550235X     Source Type: Journal    
DOI: 10.1103/PhysRevB.85.115318     Document Type: Article
Times cited : (22)

References (55)
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    • The effect of heating can be neglected. Considering the beam size and the thermal diffusion coefficient of the polystyrene, we estimate for the FWM experiment, a characteristic heating build up time 2×103 time faster than in the Z-scan experiment, with an on state of the excitation 4×103 times shorter. As a consequence, the heating effects are attenuated by a factor of two in the FWM experiment with respect to the Z-scan measurements, where it is negligible.
    • The effect of heating can be neglected. Considering the beam size and the thermal diffusion coefficient of the polystyrene, we estimate for the FWM experiment, a characteristic heating build up time 2 × 10 3 time faster than in the Z -scan experiment, with an on state of the excitation 4 × 10 3 times shorter. As a consequence, the heating effects are attenuated by a factor of two in the FWM experiment with respect to the Z -scan measurements, where it is negligible.


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