| The morphology-dependent resonance modes, which have high quality factors, form in the highly transparent microspheres by total internal reflection along the curved boundary. Resonance peaks near the frequencies of oscillation have been observed in the optical radiation pressure, elastic scattering, and inelastic emission (fluorescence and Raman) spectra of dielectric spheres. Lasing on the resonance modes of spherical droplet and solid spheres has been observed. The optical microspheres have been used in optical bistablity and differential amplification, in low threshold micro-lasers, and in study on CQED. In this thesis, we report the CQED of a Ba glass microsphere, the MDR of Raman spectra and fluorescence spectra in glass microspheres that include rare earth materials, and the modulation of the fluorescence spectra of the dye solution just outside of a glass microsphere. The author has got the following new results: Factors influencing cavity quantum electrodynamic enhancement in microsphere were discussed in theory. It is found that when diameters of microspheres are above 20gm the CQED enhancement, i.e. spontaneous emission rate enhancement in microcavities over that in free space, increases by increasement of refractive index of materials of microsphere and decreases by increasement of the size parameter.. The charts about the ralations between CQED enhancement and re fractive index of materials were protracted. The fluorescence spectra of a Ba glass microsphere (13.24tm in diameter) and the Ba glass were measured. We found that the refractive index of Ba glass is 1.874 in 760nm, and CQED enhancement of the microsphere is 676 for TE882 mode. The Raman spectra of a TiBa glass microsphere and TiBa glass were measured. The structural resonances of the TiBa glass microsphere were found in its Raman spectrum. We used the Mie scattering theory to fit the experimental results, showing the investigated microsphere diameter of 25.01 ~tm and the refraction index of 1.895 at a wavelength close to 632.8nm (with a Raman shift of 300cm1). Based on the theory of amorphous solids, Er3~ doped BTS glass microspheres and Er3~/Yb3~-codoped BTS glass microspheres were designed and prepared. Their fluorescence spectra were observed under 51 4nm excition. The upconversion emission spectra of the green luminescence in Er34 doped BTS glass microspheres and Er3~/Yb3~-codoped BTS glass microspheres were measured under both 633nm excition and 976nm excition. The structural resonances were found in their green HI luminescenc spectra. The upconversion mechanisms were discussed. When the pump power is under 30mW (light intensity about 1000W/cm2) the luminescence intensities about 524nm in Er3~/Yb3~ co-doped BTS glass under 976nm excition is less than the luminescence intensities about 528nm. When the pump power is above 30mW (light intensity about 1000W/cm2) the luminescence intensities about 524nm is more than the luminescence intensities about 528nm. We propose that the reason is that the populations of electrons in 2H1112 and ~~3/2 change by the increase of the temperature of materials. Periodical ripple structures were observed in the emission spectra of the oxazine solution just outside of the spherical surface and of the thin oxazine film (<1~.tm) outside of the spherical surface (nonluminescent microsphere). H. Fujiwara proposed that the dye solution just outside o...
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