| Summary: | 碩士 === 輔仁大學 === 物理學系 === 92 === In recent years, due to the fast development of material science, the solid-state laser crystals are more developed and focused by many researches. Present trend of search is towards high power, small size and stable laser crystals. Meanwhile, its wide range of applications indicates the importance of the
material science.
The consistent of binding arrangement of some atoms or molecules is so called “crystal structure”. The performance of its physical, optical and electrical properties of crystals are depended on the rearrangement of the atoms in the crystal. The best way to learn more about the inner structure of crystal
is to measure and analyze its optical spectrum.
In this thesis, we are discussing about the research results of the transmission spectrum, Raman spectrum and fluorescence spectrum of the yttrium aluminum garnet (YAG) crystals doping with specific concentration (15%) of ytterbium ion (Yb3+) but in different thickness (1㎜、10㎜) and different heat treatment (annealing) temperature. According to the analysis of the experiments we found that heat treatment temperature can only have the impact on transmission spectrum in lower wavelength, and such phenomenon will continue until the temperature is heated up to 1200℃. On the other way, we also found that Raman and fluorescence spectra are never influenced by the factor of
different heat treatment (annealing) temperatures.
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