摘要
调整频率多路的双二极管激光系统为二个很普通的火气体产品公司和 CO2 的同时的察觉被开发。同时的察觉被 modulating 各完成在不同频率的激光，使解调由对的信号 oflock 在里面为每气体的放大器。激光横梁被一个察觉者在通过一条相同光路径以后联合并且检测。很少表演降级与调整频率 multiplexing 联系了的试验性的结果表演，和在二条多路的察觉隧道之间的没有串音被测量。
A modulation frequency multiplexed dual diode-laser system is developed for simultaneous detection of the two most common fire gas products CO and CO2. Simultaneous detection is achieved by modulating each laser at different frequencies, demodulating the signal by a pair of lock-in amplifiers for each gas. Laser beams are combined and detected by one detector after passing through an identical optical path. The experimental results show little performance degradation associated with modulation frequency multiplexing, and no cross-talk between the two multiplexed detection channels is measured.
基金
Supported by the National Natural Science Foundation of China under Grant No 50534050, and the National High Technology Research and Development Programme of China under Grant No 2005AA641010.
