A passive Q-switched flash-lamp-pumped Nd∶YAG laser with the ion-implanted semi-insulating GaAs wafer is reported.The wafer is implanted with 400keV As+ ions in the concentration of 10 16cm -2.Using GaAs wafer as a...A passive Q-switched flash-lamp-pumped Nd∶YAG laser with the ion-implanted semi-insulating GaAs wafer is reported.The wafer is implanted with 400keV As+ ions in the concentration of 10 16cm -2.Using GaAs wafer as an absorber and an output coupler,62ns pulse duration of single pulse is obtained.展开更多
[Objective] The aim was to introduce characters of light sources and select the optimal lamp scheme for floral production in greenhouses. [Method] With chrysanthemum cuttings as materials, HPSL, energy-saving fluoresc...[Objective] The aim was to introduce characters of light sources and select the optimal lamp scheme for floral production in greenhouses. [Method] With chrysanthemum cuttings as materials, HPSL, energy-saving fluorescent lamp, and LED agricultural lamp were made use of to carry out field tests in order to compare practical effects according to light characters of different lamps and plant growth de-mands. [Result] The results show that LED lamp performed the best of the three in practical use. LED square lamp designed in bat-wing shape would be the most ben-eficial for lamp distribution in a greenhouse. [Conclusion] LED agricultural lamp is the most popular currently, for it is energy saving and easy for operation.展开更多
文摘A passive Q-switched flash-lamp-pumped Nd∶YAG laser with the ion-implanted semi-insulating GaAs wafer is reported.The wafer is implanted with 400keV As+ ions in the concentration of 10 16cm -2.Using GaAs wafer as an absorber and an output coupler,62ns pulse duration of single pulse is obtained.
基金Supported by Shanghai Science and Technology Committee(11DZ1141400)~~
文摘[Objective] The aim was to introduce characters of light sources and select the optimal lamp scheme for floral production in greenhouses. [Method] With chrysanthemum cuttings as materials, HPSL, energy-saving fluorescent lamp, and LED agricultural lamp were made use of to carry out field tests in order to compare practical effects according to light characters of different lamps and plant growth de-mands. [Result] The results show that LED lamp performed the best of the three in practical use. LED square lamp designed in bat-wing shape would be the most ben-eficial for lamp distribution in a greenhouse. [Conclusion] LED agricultural lamp is the most popular currently, for it is energy saving and easy for operation.
