Spectroscopic properties of Nd³⁺ and Pr³⁺ in gallate glasses with low-phonon energies

• Main Authors: Takebe, H. (Author), Yoshino, K. (Author), Murata, T. (Author), Morinaga, K. (Author), Hector, J. (Author), Brocklesby, W.S (Author), Hewak, D.W (Author), Wang, J. (Author), Payne, D.N (Author)
• Format: Article
• Language: English
• Published: 1997-08.
• Subjects: Article
• Online Access: Get fulltext

Absorption and fluorescence spectra of Nd³⁺ were measured in potassium tantalum gallate, lead bismuth gallate (PBG), fluorozirconate (ZBLAN), and Ge-Ga-S glasses. A Judd-Ofelt analysis was performed to determine the spontaneous emission probability and stimulated emission cross section of the ⁴F_3/2 to ⁴ I _11/2 transition of Nd³⁺. Raman spectra were studied to clarify the maximum phonon energies of the glasses. The fluorescence of the ¹G₄ to ³H₅ transition of Pr³⁺ in a dehydrated PBG glass was observed for the first time to our knowledge. The PBG glass has a higher quantum efficiency than that of ZBLAN glass based on the Judd-Ofelt analysis