NOT KNOWN FACTS ABOUT BBO CRYSTAL

Occasionally, the mismatch is often tiny. For example, when a β-BBO crystal is used to frequency double 1550 nm gentle and provide 775 nm gentle, the group velocity mismatch is only a few femtoseconds for every millimeter.When choosing an SHG crystal, the heart beat period of the laser resource need to be taken into account. A mismatch in betwee