The alternate oscillation of high-repetitionrate pulse laser by two different principles in alkaline-earth metal vapors

A new laser experimental phenomenon has been discovered by high-repetition- rate pulse discharge in the calcium-ion and strontium-ion vapor, that is, t he alternate oscillation of self-terminating transition laser pulse and col lisional radiative recombination laser pulse. On the basis of analyzing sim ilarities and differences of their prompting mechanisms, some preparatory c ontrast experimental studies were undertaken.