基于法布里-珀罗谐振腔的W波段电子顺磁共振探头研制

罗文尤, 荣星

A W-Band Electron Paramagnetic Resonance Probe Based on Fabry-Perot Cavity

LUO Wenyou, RONG Xing

图2 (a)探头的结构示意图, 探头主要由法布里-珀罗谐振腔与波纹波导构成, 波纹波导将入射的TE11模式的微波转化为HE11模式，①~④表示波导的各分段；(b)波纹波导②的剖面图；(c)法布里-珀罗谐振腔的结构示意图，⑤金属网格和⑥球面镜构成谐振腔结构；(d)探头实物图，核心部件包括：⑦金属网格、⑧样品台、⑨调制场线圈、⑩球面镜、⑪⑫⑬压电位移台

Fig. 2 (a) Schematic diagram of the probe, mainly composed of two parts, Fabry-Perot cavity and corrugated waveguides. The corrugated waveguides work as a mode converter for generating the HE11 mode from the TE11 mode. ①~④ are four segments of corrugated waveguides; (b) Cross-sectional diagram of the corrugated waveguide②; (c) Schematic diagram of the probe, ⑤ is the metallic mesh and ⑥ is the spherical mirror; (d) Photograph of the Fabry-Perot cavity, ⑦ is the metallic mesh, ⑧ is the sample holder, ⑨ is the modulation coil, ⑩ is the spherical mirror, and ⑪⑫⑬ are piezoelectric positioners