Crystal growth and characterization of cr3+Transition metal-doped LiCaA1F6
A very promising new room temperature tunable laser crystal LiCaAlFs has been successfully grown by the Czochralski pulling method. Single crystals up to 35mm in diameter and 120mm in length have been produced. Typical pulling rate ranges from 1 to 3 mm/hr and rotation rates vary from 15 to 25 rpm. Based on the optimal temperature gradient design for the resistance heating furnace and the modified Ziegler-Nichol PID fine tuning method, we have systematically doped crystal with different Cr3+ ion concentration, varying from 3% to 15% for the Al site. Spectroscopic datas on the fluorescence lifetime, and absorption bands for different Cr concentration doped crystals were measured. Using these datas we are able to adjust the optimal Cr-doping level for specific application, such as flashlamp pumping or diode pumping.
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Master of Science (M.S.)
College of Arts and Sciences
Length of Campus-only Access
Masters Thesis (Open Access)
Arts and Sciences -- Dissertations, Academic; Dissertations, Academic -- Arts and Sciences
Tsi, Shi, "Crystal growth and characterization of cr3+Transition metal-doped LiCaA1F6" (1990). Retrospective Theses and Dissertations. 4088.