Optical properties of , and ions in apatite, fluorite and phosphate glasses

✍ Scribed by S. Bodył; M. Czaja; Z. Mazurak

• Publisher: Elsevier
• Year: 2009
• Tongue: English
• Weight: 825 KB
• Volume: 2
• Category: Article
• ISSN: 1875-3892
• DOI: 10.1016/j.phpro.2009.07.037

✦ Synopsis

The luminescence spectra of naturally occurring apatite Ca 5 [F (PO 4 ) 3 ] and fluorite CaF 2 crystals, containing traces of rare-earth elements have been compared with phosphate glasses doped with Pr 3+ , Sm 3+ and Er 3+ ions. The selected excitation bands for luminescence of samarium and praseodymium ions were indicated. Separate emission of Sm 3+ ions besides Pr 3+ ions in apatite could be measured for exc =335, 359 and 372 nm and emission of Pr 3+ ions was strengthened for exc. =444 nm. The Judd-Ofelt parameters and branching ratios for Pr 3+ and Sm 3+ doped phosphate glasses were determined. The spectroscopic quality factor X= 4 / 6 was found to be 0,69 and 1,75 for Pr 3+ and Sm 3+ glasses, respectively.