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Proceedings Paper

Study and comparison of two novel laser crystals Dy:NaGd(WO4)2,Dy:NaLa(WO4)2
Author(s): Junjie Yang; Wenqin Yang; Ji Wu; Shangyuan Feng
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Paper Abstract

Absorption spectra and Raman spectra of Dy:NaGd(WO4)2(Dy:NGW) and Dy:NaLa(WO4)2(Dy:NLW) crystal at room temperature are investigated. Although the structure of them are similar, there is a bit discrepancy between Dy:NGW and Dy:NLW of the set of spectra corresponding to the radius of Nd3+, La3+ and Gd3+. According to J-O theory, the oscillator strength and intensity parameter are calculated and discussed. Due to the disordered structure of the host, the absorption bands are strongly inhomogeneously broadened. The absorption broad bandwidth reduces the requirements on laser diodes for zero-phonon-line (ZL) pumping with respect to the spectral bandwidth and wavelength stability for different power levels. The same differences happen in the Raman spectra. It is beyond doubt that Dy3+-doped compounds, including the low energy-phonon crystals will be one kind of very promising material in the laser application.

Paper Details

Date Published: 22 May 2009
PDF: 7 pages
Proc. SPIE 7282, 4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, 72823H (22 May 2009); doi: 10.1117/12.831038
Show Author Affiliations
Junjie Yang, Fujian Normal Univ. (China)
Wenqin Yang, Fujian Normal Univ. (China)
Ji Wu, Fujian Normal Univ. (China)
Shangyuan Feng, Fujian Normal Univ. (China)


Published in SPIE Proceedings Vol. 7282:
4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies
Li Yang; John M. Schoen; Yoshiharu Namba; Shengyi Li, Editor(s)

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