An experimental way for the thermal characterization of semiconductor lasers based on I V method under pulse driving conditions has been developed, with which the thermal characteristics of strain compensated 1.3 μm ...An experimental way for the thermal characterization of semiconductor lasers based on I V method under pulse driving conditions has been developed, with which the thermal characteristics of strain compensated 1.3 μm InAsP/InGaAsP ridge waveguide MQW laser chips have been investigated. The results show that, by measuring and analyzing the I V characteristics under appropriate pulse driving conditions at different heat sink temperatures, the thermal resistance of the laser diodes could be easily deduced. The driving current and junction voltage waveforms of the laser chips under different pulse driving conditions are also discussed.展开更多
A non-orthogonal predefined exponential basis set is used to handle half-bounded domains in multi domain spectral method (MDSM). This approach works extremely well for real-valued semi-infinite differential problems. ...A non-orthogonal predefined exponential basis set is used to handle half-bounded domains in multi domain spectral method (MDSM). This approach works extremely well for real-valued semi-infinite differential problems. It spans simultaneously wide range of exponential decay rates with multi scaling and does not suffer from zero crossing. These two conditions are necessary for many physical problems. For comparison, the method is used to solve different problems and compared with analytical and published results. The comparison exhibits the strengths and accuracy of the presented basis set.展开更多
文摘An experimental way for the thermal characterization of semiconductor lasers based on I V method under pulse driving conditions has been developed, with which the thermal characteristics of strain compensated 1.3 μm InAsP/InGaAsP ridge waveguide MQW laser chips have been investigated. The results show that, by measuring and analyzing the I V characteristics under appropriate pulse driving conditions at different heat sink temperatures, the thermal resistance of the laser diodes could be easily deduced. The driving current and junction voltage waveforms of the laser chips under different pulse driving conditions are also discussed.
文摘A non-orthogonal predefined exponential basis set is used to handle half-bounded domains in multi domain spectral method (MDSM). This approach works extremely well for real-valued semi-infinite differential problems. It spans simultaneously wide range of exponential decay rates with multi scaling and does not suffer from zero crossing. These two conditions are necessary for many physical problems. For comparison, the method is used to solve different problems and compared with analytical and published results. The comparison exhibits the strengths and accuracy of the presented basis set.
