LITTLE KNOWN FACTS ABOUT LASER CRYSTAL.

Seen reliable-condition lasers based upon laser crystals are compact and light-weight. Lasers from deep crimson to blue happen to be noted. Particularly, there have been many reports on Pr3+ doped laser crystals, and constant wave lasers around 490 nm have been realized. Ti∶sapphire is the key achieve crystal for ultrafast lasers. Superintense ul