Efficient ∼2 μm emission and energy transfer mechanism of Ho doped barium gallium germanate glass sensitized by Tm ions

Xu, R.; Tian, Y.; Hu, L.; Zhang, J.
September 2012
Applied Physics B: Lasers & Optics;Sep2012, Vol. 108 Issue 3, p597
Academic Journal
Optical absorption and emission properties of Ho ions in barium-gallium-germanate glass are investigated. A significant result is that the emission intensity of Ho:I→I excited by 808 nm through the energy level Tm:H is stronger than that of the direct excitation of Ho. The emission cross section of Ho is calculated to be 9.02×10 cm at the wavelength of 1.994 μm. Comparatively, the larger emission cross section and efficient energy transfer process reveal that the prepared glass could be a kind of promising material for laser emission at 2 μm.


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