SELF-SEEDING IN A DUAL-CAVITY-TYPE PULSED TI-SAPPHIRE LASER-OSCILLATOR

We have constructed a self-seeded Ti:sapphire laser oscillator by usin g a dual-cavity configuration that consists of a Littman configuration cavity and a partially reflecting feedback mirror. This configuration can be decomposed with two kinds of cavity, a grazing-incidence cavit y and a standing-wave cavity. The former behaves as an injection seede r and the latter as a slave oscillator. This Ti:sapphire laser system is capable of delivering a continuously tunable laser pulse with a nar row Linewidth. Injection at the laser emission region of the free-runn ing Ti:sapphire laser resulted in essentially complete energy extracti on.