强激光与粒子束2013，Vol.25Issue(1)：77-81,5.DOI:10.3788/HPLPB20132501.0077
太赫兹自由电子激光光腔光子晶体镜的设计
Design of dynamically tunable photonic crystal mirrors in THz free electron lasers
摘要
Abstract
A 1-D photonic crystal (PC) mirror of the optical resonator for THz free electron lasers (FELs) is designed theoretically with central frequencies from 1 to 3 THz. The relationship between the reflection spectrum and structural parameters of 1-D PC, such as dielectric thickness, number of layers, and refraction index, is studied. A systematical method to design PC mirrors with high reflectivity is proposed. The out-couplers in the presence of defect layers in PC structure is simulated. It is shown that the out-coupling ratio of the resonator is dynamically tunable by careful adjustment and design of the defect layers. A practical tuning method for THz FELs using PC mirrors is proposed. Moreover, the shift of the whole reflection spectrum is also viable by adjusting the dielectric layer thickness, which extends the tuning range of high reflection PC mirrors and out-couplers.关键词
自由电子激光器/光腔/太赫兹/光子晶体/可调谐Key words
free electron laser/ optical resonator/ terahertz/ photonic crystal/ dynamically tunable分类
信息技术与安全科学引用本文复制引用
鲍献丰,窦玉焕,王小军,束小建..太赫兹自由电子激光光腔光子晶体镜的设计[J].强激光与粒子束,2013,25(1):77-81,5.基金项目
国家自然科学基金项目(11105019) （11105019）
中国工程物理研究院科学技术发展基金项目(2011B0401066) （2011B0401066）
国家高技术发展计划项目 （）
