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In this paper, it is present a model to simulate Four-wave mixing in quantum dot semiconductor optical amplifier, taking into account the influence of carrier heating at reservoir. The numerical calculations show that; the carrier heating relaxation at reservoir demonstrates a significant impact on excited state occupation probability, and opposite occurs with ground state. Also, the conversion efficiency is shown a good match with experiment data.
AbstractThe effect of increasing of carrier temperature in wetting layer of semiconductor optical amplifier hasbeen modeling. The occupation probability, carrier heating relaxation, spontaneous emission and freecarrier absorption have been included in our formalization. The numerical calculations showed theoccupation probability directly proportion with carrier heating time as a result of reduction of carrierdensity in wetting layer. Also, the reservoir carrier temperature is directly proportional with the fullwidth at half maximum of injected pulse and carrier heating lifetime. The numerical calculations thatare showed; the carrier heating in the rate equations satisfies the thermal equilibrium between thelattice and carriers.
Abstract The effect of increasing of carrier temperature in wetting layer of semiconductor optical amplifier has been modeling. The occupation probability --- carrier heating relaxation --- spontaneous emission and free carrier absorption have been included in our formalization. The numerical calculations showed the occupation probability directly proportion with carrier heating time as a result of reduction of carrier density in wetting layer. Also --- the reservoir carrier temperature is directly proportional with the full width at half maximum of injected pulse and carrier heating lifetime. The numerical calculations that are showed --- the carrier heating in the rate equations satisfies the thermal equilibrium between the lattice and carriers.
In this paper, we are introduce a new model to simulate the influence of carrier heating in quantum dot optical amplifiers. depending on density matrix theory, rate equations for two-level and the analytical solution of pulse propagation in quantum dot (QD) the nonlinear gain coefficient due carrier heating has been derive. The effects of energy splitting, detuning, carrier density and time of spectral hole burning versus nonlinear gain coefficient have been investigated.Also, the time recovery of ground state (GS) with carrier heating effects hasbeen calculated, the resultsshows a good agreement with research.
في هذا البحث نقدم نموذج جيد لمحاكاة تأثير حرارة الحاملات في المضخم البصري شبة الموصل النانوي.بالاعتماد على نظرية كثافة المصفوفة و معادلات التغير الزمني لنظام مستويين. و أن نموذج الحل التحليلي لسريان النبضات في النقط الكمية. ان معاملات الربح اللاخطية بسبب حرارة الحاملات مشتق. كذلك زمن الاستعادة بوجود تأثير حرارة الحاملات تم حسابه و النتائج توضح توافق جيد مع البحوث العالمية .
Quantum dot --- semiconductor optical amplifier --- nonlinear gain coefficients --- النقط الكمية --- المضخم البصري لأشباه الموصلات --- معاملات الربح اللاخطية
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