Study On LD-Pumped All-Solid-State 266nm UV Laser

UV laser is widely used in the field of industry, medical treatment, and scientific research. LD-pumped all-solid-state UV laser has become a new UV source. This dissertation has made some theoretical and experimental study around all-solid-state UV laser.In the fist chapter, the applications of UV laser and the development of LD-pumped all-solid-state 266nm UV laser are introduced. In the second chapter, the theory of folded cavity is discussed; based on the rate equations, the peak power, the pulse energy and the time behavior of Q-switched laser are studied; the characters of A-0 Q-switching are also discussed. In the third chapter, the SHG theory is discussed in detail; the principle and the means of phase-matching are introduced; and the characteristics of nonlinear optical crystal are generalized. In the fifth chapter, the optical characteristics of Nd:YAG are studied. Using intracavity SHG and extracavity FHG technique, we designed a LD side-pumped Nd:YAG/LBO/BBO A-0 Q-switched 266nm UV laser. The average power of 211mW at 266nm was obtained when the input current was 23A and the repetition frequency was 7.3kHz. The last chapter is the summarization and suggestion of the paper.