One-dimensional heterostructural metallodielectric photonic band gap material for the modification of emission spectrum of BaF_(2) scintillator

摘要

One-dimensional metallodielectric heterostructural photonic band gap (PBG) material is designed to reach high transmittance band in short wavelength, broad and deep forbidden band in long wavelength, especially sharp cutoff edge between the transmission and forbidden bands. The designed PBG material is applied to modify the emission spectrum of a BaF_(2) scintillator and is proved to be adequate to suppress the slow component of the scintillation light. The suppression ratio of the slow to the fast component reaches 28 dB with a tolerable attenuation of the fast component.