The characteristics of the unusually narrowed emission from hexagon BP1T crystals were investigated by photopumping them with a line laser beam. The wavelengths and strengths of the emission lines sensitively depended on the position and the angle of the crystal. The threshold of the excitation fluence decreases inversely proportional to the crystal length. We have concluded that the unusually narrowed emission is the laser oscillation by laser cavity resonance within a waveguide. The shape and size of the excitation laser beam play an important role in the laser oscillation. (c) 2006 American Institute of Physics.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据