Spectra and intensity parameters of Tm3+ ion in YAlO3 crystal

✍ Scribed by Yanling Lu; Yongbing Dai; Jun Wang; Yang Yang; Anping Dong; Shenghua Li; Baode Sun

• Publisher: Elsevier Science
• Year: 2007
• Tongue: English
• Weight: 194 KB
• Volume: 273
• Category: Article
• ISSN: 0030-4018
• DOI: 10.1016/j.optcom.2006.12.010

✦ Synopsis

High quality Tm-doped YAlO 3 (Tm:YAlO 3 ) single crystals were obtained along crystallographic b-axis by the Czochralski technique. Optical absorption and fluorescence spectra for Tm 3+ in YAlO 3 crystals were investigated at room temperature. Based on Judd-Ofelt approach, the intensity parameters X t (t = 2, 4, 6) of Tm:YAlO 3 were calculated to be X 2 = 0.93 • 10 À20 cm 2 , X 4 = 2.23 • 10 À20 cm 2 , and X 6 = 1.12 • 10 À20 cm 2 . The spectral parameters such as experimental and theoretical oscillator strengths, radiative transition probabilities, radiative lifetime and the fluorescence branching ratio were also obtained. All results indicate that Tm:YAlO 3 is a potential candidate for compact, efficient mid-infrared lasers with laser diode pumping.