Deeper insight into non-equilibrium carrier dynamics in InP:Fe: experimental and modeling

Arūnas Kadys; Ramūnas Aleksiejūnas; Kęstutis Jarašiūnas; Liudas Subačius

doi:10.1117/12.726452

25 January 2007 Deeper insight into non-equilibrium carrier dynamics in InP:Fe: experimental and modeling

Arūnas Kadys, Ramūnas Aleksiejūnas, Kęstutis Jarašiūnas, Liudas Subačius

Proceedings Volume 6596, Advanced Optical Materials, Technologies, and Devices; 65960S (2007) https://doi.org/10.1117/12.726452
Event: Advanced Optical Materials, Technologies, and Devices, 2006, Vilnius, Lithuania

Abstract

Non-equilibrium carrier generation, transport, and recombination have been investigated in Fe-doped InP crystals experimentally in subnanosecond time domain by using time-resolved picosecond four-wave mixing technique. The carriers were generated by below band-gap excitation at 1064 nm (hv = 1.17 eV), what allowed photoexcitation of non-equilibrium carriers from/via Fe-related deep levels. The contributions of Fe²⁺/Fe³⁺ deep level states and of the excited state Fe^2+* have been analyzed by numerical modeling, using the relevant model which took into account carrier generation via different defect states, as well recombination and diffusion. The modeling was helpful to get insight into varying with excitation generation rates of holes and electrons and explained the main features of FWM kinetics and exposure characteristics.

Citation Download Citation

Arūnas Kadys, Ramūnas Aleksiejūnas, Kęstutis Jarašiūnas, and Liudas Subačius "Deeper insight into non-equilibrium carrier dynamics in InP:Fe: experimental and modeling", Proc. SPIE 6596, Advanced Optical Materials, Technologies, and Devices, 65960S (25 January 2007); https://doi.org/10.1117/12.726452

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