Properties of the Coherent Radiation Emitted from Photonic Crystal in the Millimeter Wave Region II(III. Accelerator, Synchrotron Radiation, and Instrumentation)

Properties of coherent radiation emitted from a Photonic crystal (PhC) is studied by experiments in the millimeter wave region, under various geometric arrangements of the PhC with respect to an electron beam, such as (1) reflective arrangement, (2) refractive arrangement and (3) longitudinal shift. In these arrangements, we observe not only the dispersion relation of Smith-Purcell radiation but also another relation or the secondary relation. The influence of the arrangement on the coherent radiation is mainly discussed in the (k_x, ω)) diagram