Theoretical analysis for measuring the relaxation time between two subvalance bands by using transient incoherent spectroscopy

Zhenhua Hu; Dexiu Huang; Shuzhong Gao

doi:10.1117/12.480974

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29 August 2002 Theoretical analysis for measuring the relaxation time between two subvalance bands by using transient incoherent spectroscopy

Zhenhua Hu, Dexiu Huang, Shuzhong Gao

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Proceedings Volume 4905, Materials and Devices for Optical and Wireless Communications; (2002) https://doi.org/10.1117/12.480974
Event: Asia-Pacific Optical and Wireless Communications 2002, 2002, Shanghai, China

Abstract

A new scheme for studying dynamics process of semiconductor optical amplifier (SOA) in quantum wells structure (QWS) is proposed based on A-type three-level model. When the system is off-resonantly excited by incoherent light beams, the interaction process can be regarded as a coherent Anti-Stokes Raman scattering (CARS). The signal behavior determined by ultrafast process of sub-valance-band (SVB) are analyzed by the transient incoherent spectroscopy based on CARS. If the broad-band light resource as light emitting diode(LED) is utilized in experiment, the time resolution extends femtosecond-resolved. This experiment scheme which is composed of LED ,multimode fiber and the other devices is rather useful to investigate the carrier relaxation time between the two SVl3s.

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Zhenhua Hu, Dexiu Huang, and Shuzhong Gao "Theoretical analysis for measuring the relaxation time between two subvalance bands by using transient incoherent spectroscopy", Proc. SPIE 4905, Materials and Devices for Optical and Wireless Communications, (29 August 2002); https://doi.org/10.1117/12.480974

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