Multifrequency DLS systems
Remote detection of some gases concentration in atmosphere and other gaseous mixtures is of interest of different applications. Particularly when the case is point is human and environment safety. It may be highly explosive gases leaks detection and exposure of illegal transportation of dangerous explosive and toxic substances.
Several types of Diode Lasers (DL) which are in existence today cover huge spectral range from near UV to far IR where place absorption bands of different molecules. It allows on indivisible hardware(-controlled) and methodical basis provide with its trace quantities(amounts).
Main DL manufacturers
In practical way all molecules have absorption bands in near IR range. Molecular absorption bands which placed in this spectral range are distinguishing. Here also operate commercial produced diode lasers that provides with possibility of different molecules detection.
Flow-chart of remote detector of gas impurities traces in atmosphere and device appearance:
Simultaneous registration of three gases with help of multifrequency system:
©2006-2007