NOT KNOWN FACTS ABOUT LASER CRYSTAL

Noticeable strong-point out lasers depending on laser crystals are compact and light-weight. Lasers from deep crimson to blue have already been noted. Especially, there have been lots of experiences on Pr3+ doped laser crystals, and constant wave lasers about 490 nm happen to be obtained. Ti∶sapphire is the key gain crystal for ultrafast lasers.