LITTLE KNOWN FACTS ABOUT LASER CRYSTAL.

Noticeable good-condition lasers determined by laser crystals are compact and light-weight. Lasers from deep purple to blue are actually described. In particular, there were a lot of experiences on Pr3+ doped laser crystals, and continual wave lasers about 490 nm happen to be obtained. Ti∶sapphire is the primary attain crystal for ultrafast laser