LITTLE KNOWN FACTS ABOUT LASER CRYSTAL.

Obvious stable-condition lasers according to laser crystals are compact and light. Lasers from deep purple to blue are documented. Particularly, there have been plenty of reports on Pr3+ doped laser crystals, and continual wave lasers all around 490 nm happen to be obtained. Ti∶sapphire is the principle gain crystal for ultrafast lasers. Superint