Measuring of Intracavity Phase Changes by use of Bidirectional Ring Diode - pumped Mode-locked Nd:YVO_4 Laser

摘要

Passively mode locked ring vanadate laser pumped by 1 W laser diode was developed. Laser threshold for free running regime was 55 mW, the bidirectional mode locked operation was obtained for incident pump power of only 630 mW. The repetition rate of the laser was 200 MHz, pulse duration 53 ps. New saturable absorber and configuration with two lenses inside the resonator improved stability of mode locking regime. Application of this laser for measuring of small intracavity phase changes is reported.