SYSTEMS AND METHODS FOR LASING FROM A MOLECULAR GAS

摘要

Systems and methods for lasing molecular: gases, and systems and methods of detecting molecular species are provided. The systems and methods can include the use of an excitation laser tuned -to a --wavelength associated with oxygen or nitrogen. The lasing can occur in both the forward and reverse directions relative to the: excitation laser beam. Reverse lasing can provide a laser beam that propagates back toward the excitation laser source, and can provide a method for remote sampling of molecular species contained in the air.,For exam pie, systems and methods of detecting a molecular species of interest can be achieved by using the properties of the backward or forward propagating air laser to indicate a change in a pulse from the source of laser pulses caused by a modulation laser tuned to interact with the molecular species of interest.