SUBPICOSECOND LASER DRIVER WITH INTRACAVITY MULTIPASS OPTICAL-SYSTEM

A subpicosecond starting oscillator based on Nd glass with mode lockin g for multichannel laser multistage systems has been developed and stu died. This system uses a cavity that has been extended by a special re flective optical system, which makes it possible to implement a soft o scillation regime, using a controlling electrooptical feedback system. It is shown that the reproduced lasing pulses are 800 fs wide when th e regime is close to optimal, and that the energy is 3 mu J for the li miting ratio between the pulsewidth and the spectral width.