Study and comparison of two novel laser crystals Dy:NaGd(WO4)2, Dy:NaLa(WO4)2

Junjie Yang; Wenqin Yang; Ji Wu; Shangyuan Feng

doi:10.1117/12.831038

21 May 2009 Study and comparison of two novel laser crystals Dy:NaGd(WO₄)₂,Dy:NaLa(WO₄)₂

Junjie Yang, Wenqin Yang, Ji Wu, Shangyuan Feng

Proceedings Volume 7282, 4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies; 72823H (2009) https://doi.org/10.1117/12.831038
Event: AOMATT 2008 - 4th International Symposium on Advanced Optical Manufacturing, 2008, Chengdu, Chengdu, China

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.

Citation Download Citation

Junjie Yang, Wenqin Yang, Ji Wu, and Shangyuan Feng "Study and comparison of two novel laser crystals Dy:NaGd(WO₄)₂,Dy:NaLa(WO₄)₂", Proc. SPIE 7282, 4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, 72823H (21 May 2009); https://doi.org/10.1117/12.831038

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