Spectroscopic properties and laser performance of Tm:YAG ceramics

Tm:YAG laser ceramics were fabricated by solid-state reaction and simple vacuum sintering, and their spectroscopic characteristics were investigated in detail. High fluorescence quantum efficiency, long fluorescence lifetime and low up-conversion losses were demonstrated, which indicated that such c...

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Veröffentlicht in:	Journal of luminescence 2013-10, Vol.142, p.189-195
Hauptverfasser:	Fei, B.J., Huang, J.Q., Guo, W., Huang, Q.F., Chen, J., Tang, F., Wang, W.C., Cao, Y.G.
Format:	Artikel
Sprache:	eng
Schlagworte:	Beam characteristics: profile, intensity, and power spatial pattern formation Ceramics Conversion Doped-insulator lasers and other solid state lasers Exact sciences and technology Fluorescence Fundamental areas of phenomenology (including applications) Gain Gain media Laser Laser ceramics Laser materials Laser optical systems: design and operation Lasers Luminescence Optical materials Optics Physics Spectroscopic Spectroscopy Tm:YAG Upconversion
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Zusammenfassung:	Tm:YAG laser ceramics were fabricated by solid-state reaction and simple vacuum sintering, and their spectroscopic characteristics were investigated in detail. High fluorescence quantum efficiency, long fluorescence lifetime and low up-conversion losses were demonstrated, which indicated that such ceramics could be used as laser gain media. Laser operation at 2μm via 3F4→3H6 transition was realized. The maximum output power of 593mW at 2007nm was acquired with an optical conversion efficiency of 15.6%. •Optical grade Tm:YAG laser ceramics were prepared.•Detail spectroscopic properties of Tm:YAG ceramic were investigated.•Cross-relaxation mechanisms of Tm3+ based on the emission spectra were elaborated.•Laser output of 593mW was realized with an optical conversion efficiency of 15.6%.
ISSN:	0022-2313 1872-7883
DOI:	10.1016/j.jlumin.2013.02.015