Crystal growth and spectral properties of Nd3+:Ca9Gd(VO4)7 crystal

✍ Scribed by Lingyun Li; Guojian Wang; Yisheng Huang; Lizhen Zhang; Zhoubin Lin; Guofu Wang

• Publisher: Elsevier Science
• Year: 2011
• Tongue: English
• Weight: 491 KB
• Volume: 314
• Category: Article
• ISSN: 0022-0248
• DOI: 10.1016/j.jcrysgro.2010.11.114

✦ Synopsis

An Nd 3 + :Ca 9 Gd(VO 4 ) 7 crystal with dimensions of +25 Â 30 mm 3 was grown by the Czochralski method. The hardness, thermal expansion coefficient and thermal conductivity coefficient of the crystal were measured. The spectroscopic characteristics of Nd 3 + :Ca 9 Gd(VO 4 ) 7 crystals were investigated. The absorption band at 810 nm has an FWHM of 10 nm, and absorption cross-sections are 5.81 Â 10 À 20 cm 2 for p-polarization and 7.47 Â 10 À 20 cm 2 for s-polarization at 810 nm. The emission cross-sections at 1067 nm are 4.2 Â 10 À 20 and 6.5 Â 10 À 20 cm 2 for pand s-polarizations, respectively. The quantum efficiency Z c is equal to 94.3%. To sum up the above results, Nd 3 + :Ca 9 Gd(VO 4 ) 7 crystal can be regarded as a highly efficient solid state laser material.