Optical Properties and Reorientation of M Centers in NaF

✍ Scribed by W. C. Collins; I. Schneider

• Publisher: John Wiley and Sons
• Year: 1972
• Tongue: English
• Weight: 495 KB
• Volume: 51
• Category: Article
• ISSN: 0370-1972
• DOI: 10.1002/pssb.2220510236

✦ Synopsis

Abstract

The reorientation efficiency of M centers in NaF is found to be proportional to the M^+^ concentration, suggesting that M centers reorient via an M^+^ mechanism, as in KCl. In this mechanism light is first absorbed in the higher transitions of the M centers causing them to ionize, and then in the higher transitions of the M^+^ centers causing them to reorient. The higher transitions of both the M and the M^+^ center are identified. In addition, a new absorption band at 516 nm giving rise to emission at 680 nm, seen in lithium‐doped samples, is tentatively identified as due to the lithium M~A~ center.