The effect of TiO2 and K2O addition on the crystallization of Cr doped glass-ceramic from glasses in the system SiO2/Al2O3/MgO

• Main Authors: Kai-Chun Chen, 陳凱群
• Other Authors: Jausheng Wang
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/20421434259106682911

碩士 === 國立中山大學 === 光電工程學系研究所 === 101 === We studied the magnesium silicate glass Oxides TiO2, and the added K2O, general literature to increase the quantity produced crystal and glass phase separation effects and optical properties of the crystalline phase, so I hope by changing its composition the content of the crystalline phase to produce the correct fluorescence intensity increase, and increase the number of crystallization and reduce the scattering loss crystalline particle size reduction, research on chromium doped Ti and K glass and glass-ceramic material properties of the optical and the impact on the composition and thus make improvements to enable fluorescence excitation wavelength of 1.1 to 1.6 microns of Cr4 + ions in the crystal internal content increases and reaches the crystallization of nanometer-scale crystals reduce excessive scattering loss incurred unnecessary. For the experiments were changes in chromium-doped TiO2 and K2O content of the glass composition, and its optical measurement of material properties. And to infer the characteristics of each post, and then deploy the mixing proportion, culminating in the modulation of the closest to the target characteristics of the samples in this experiment, and its composition formulations fiber spinning process, application and production expectations having broadband fluorescence characteristics chromium-doped glass ceramic fibers. Experimental results show that, TiO2 generally the compound as a nucleating agent for crystallization crystalline phase had no effect, and its main function is to help the formation of crystals from the XRD results. The main impact of the crystalline phase of K2O, add it or not is the impact of Mg2SiO4 crystal phase formed the most important reason. Commissioned by the optical pumping system, and its characteristics are the same as with chromium-doped glass ceramics, glass ceramics research evidences can be used in MCVD and pumped into fiber for future research may use and improvement of orientation.