Since I am engaged in laser radar every day, I am more than familiar with the transmission windows.
People like you are so F'kn hilarious...and insecure. You rudely and arrogantly tout all your BS credentials and trade-school degrees like I'm supposed to be impressed.
I haven't named any credentials yet. As far as trade schools, mine is nicknamed North Avenue Trade School.
I thought an 'expert' like you would have all that handy? So, plotting thermal efficiency against wavelength, where's the maxima (hint: find the first and second derivatives)? Oh, that's right, you missed Calculus. You're a f'kn moron. STFU.
I've taken gobs of higher math. There isn't any simple equation to describe atmospheric transmission because it is the product of multiple molecular absorbtions which are quite complex. The charts you need are empirical.