In this paper,the theoretical analysis and simulating calculation were conducted for a basic two-stage semiconductor thermoelectric module,which contains one thermocouple in the second stage and several thermocouples ...In this paper,the theoretical analysis and simulating calculation were conducted for a basic two-stage semiconductor thermoelectric module,which contains one thermocouple in the second stage and several thermocouples in the first stage.The study focused on the configuration of the two-stage semiconductor thermoelectric cooler,especially investigating the influences of some parameters,such as the current I 1 of the first stage,the area A 1 of every thermocouple and the number n of thermocouples in the first stage,on the cooling performance of the module.The obtained results of analysis indicate that changing the current I 1 of the first stage,the area A 1 of thermocouples and the number n of thermocouples in the first stage can improve the cooling performance of the module.These results can be used to optimize the configuration of the two-stage semiconductor thermoelectric module and provide guides for the design and application of thermoelectric cooler.展开更多
This paper critically analyses and simulates the circuit configuration of the integral gated mode single photon detector which is proposed for eliminating the transient spikes problem of conventional gated mode single...This paper critically analyses and simulates the circuit configuration of the integral gated mode single photon detector which is proposed for eliminating the transient spikes problem of conventional gated mode single photon detector. The relationship between the values of the circuit elements and the effect of transient spikes cancellation has been obtained. With particular emphasis, the bias voltage of the avalanche photodiode and the output signal voltage of the integrator have been calculated. The obtained analysis results indicate that the output signal voltage of the integrator only relates to the total quantity of electricity of the avalanche charges by choosing the correct values of the circuit elements and integral time interval. These results can be used to optimize the performance of single photon detectors and provide guides for the design of single photon detectors.展开更多
基金Project supported by the National Basic Research Program of China (Grant Nos G2001039302 and 2007CB307001)the Natural Science Foundation of Guangdong Province (Grant No 2003A1030405)the Natural Science Foundation of Guangzhou City,China (Grant No 1999-Z035-01)
文摘In this paper,the theoretical analysis and simulating calculation were conducted for a basic two-stage semiconductor thermoelectric module,which contains one thermocouple in the second stage and several thermocouples in the first stage.The study focused on the configuration of the two-stage semiconductor thermoelectric cooler,especially investigating the influences of some parameters,such as the current I 1 of the first stage,the area A 1 of every thermocouple and the number n of thermocouples in the first stage,on the cooling performance of the module.The obtained results of analysis indicate that changing the current I 1 of the first stage,the area A 1 of thermocouples and the number n of thermocouples in the first stage can improve the cooling performance of the module.These results can be used to optimize the configuration of the two-stage semiconductor thermoelectric module and provide guides for the design and application of thermoelectric cooler.
基金Project supported by the State Key Development Program for Basic Research of China (Grant No 2007CB307001)Guangdong Key Technologies R&D Program (Grant No 2007B010400009)the Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No 2001CB309302)
文摘This paper critically analyses and simulates the circuit configuration of the integral gated mode single photon detector which is proposed for eliminating the transient spikes problem of conventional gated mode single photon detector. The relationship between the values of the circuit elements and the effect of transient spikes cancellation has been obtained. With particular emphasis, the bias voltage of the avalanche photodiode and the output signal voltage of the integrator have been calculated. The obtained analysis results indicate that the output signal voltage of the integrator only relates to the total quantity of electricity of the avalanche charges by choosing the correct values of the circuit elements and integral time interval. These results can be used to optimize the performance of single photon detectors and provide guides for the design of single photon detectors.