The thickness of transmission-mode photocathode affects directly its photoelectric efficiency and spectral response. In this paper, the relationships between the thickness and the optical absorption of photocathode and the escape depth of photoelectron are discussed. The optimum thickness of transmission-mode photocathode is analysed theoretically, and the methods for monitoring and determining the optimum thickness are proposed.
P. Dolizy, O. De Luca and M. Deloron, Actc Electronica, 20(1977). 265.[2]R. Holtom, J. Phys. D: Appl. Phys., 12(1979), 1169.[3]北京工业学院编,物理光学,国防工业出版社,(1979),91.[4]A. H. Sommer著,侯询译,光电发射材料,科学出版社,(1979),135.[5]P. Dolizy, Philips. Tech. Rev., 40(1982), 19.