CO2 laser pulse optimization for harmonic generation

摘要

A pulsed CO2 laser that eliminates the nitrogen tail on the pulse by placing a Brewster angle absorption cell inside the optical cavity of the laser. This Brewster angle absorption cell contains a gas which exhibits a preferential absorption in the 10 mu m spectral regime. This preferential absorption causes the laser to lase in the 9.6 mu m regime which allows for easier harmonic generation and elimination of the nitrogen tail.