THEORETICAL AND EXPERIMENTAL STUDIES ON THE DOUBLE-FREQUENCY MODE-LOCKED Ar⁺ LASER

The principle and characteristics of the double-frequency mode-locked Ar⁺ laser are described. There are two light pulses in the Ar⁺ laser cavity at any time, and the mode spacing is doubled at about 210MHz. This leads to a factor of about two in average output power of the Ar⁺ laser. A theoretical explanation for the experimental phenomenon is given.