Investigation of mode radiation loss for microdisk resonators with pedestals by FDTD technique

• 来源期刊: 中国光学快报(英文版)
• 学科: 工学
• 关键词: FDTD法 辐射损失 基座 调查技术 谐振器 有限差分时域 回音壁模式 半径比
• 年，卷（期）: 2010,（5）
• 所属期刊栏目: Lasers and Laser Optics
• 页码范围: 502-504
• 页数: 3页
• 分类号: TN011 TL631.24
• 语种: 英文

摘要

Mode radiation loss for microdisk resonators with pedestals is investigated by three-dimensional(3D) finite-difference time-domain(FDTD) technique.For the microdisk with a radius of 1μm,a thickness of 0.2μm,and a refractive index of 3.4,on a pedestal with a refractive index of 3.17,the mode quality(Q) factor of the whispering-gallery mode(WGM) quasi-TE_(7.1) first increases with the increase of the radius of the pedestal,and then quickly decreases as the radius is larger than 0.75μm.The mode radiation lo...