I don't know anything about physics but some times I wonder whether a particular procedure is possible or not. As for this post, It is known that a major problem with use of laser is absorption by the environment (ex. clouds or any form of water vapor). It is also known that laser (as far as I know) could be generated from substances such as CO2 and N2 which are easily absorbable by environment due to their nature. Now, my question is "if laser could be generated from substances that are not easily absorbable by environment could the problem stated above at least be reduced?" tq.