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SUNJing-hua ZHANGXin-lu 《船舶与海洋工程学报》2003,2(1):71-75
A simple rate equation model for 2μm Tm, Ho:YLF laser is given to study laser dynamics. Under low pump power, the explicit formulae for the threshold pump power and the relation between output power and incident power are obtained. The present model provides a straightforward procedure to design the laser resonator and the optical coupling system for optimization. At the same time, the experimental results are reported. At room temperature the slope efficiency is 22.4% and the typical lasing threshold is about 328mW. The theory is in good agreement with experiment. 相似文献
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现在,变风量控制系统作为控制各大小居室温度的主要手段,已得到越来越广泛的应用。根据英国船舶仪器研究协会的最新统计,在英国售出的变风量末端装置量正在逐年上升,单是1988~1990年,就从72000套上升到112000套。那么,变风量系统到底给今天的居民带来了多大的好处?变风量装置的节能优越性是否已全部发挥?变风量装置的安装和维修 相似文献
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Doug J. Marchand 《中国远洋航务》2006,(11):48-50
The Port of Savannah is the fourth largest container port of the "five'global U.S. ports. 相似文献
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