Interference Photocathode.
Abstract
It is an object of the present invention to selectively reduce sensitivity to radiation of one wavelength while selectively enhancing sensitivity to radiation of a second wavelength, different from the first wavelength, in a photocathode. To achieve this and other objects made apparent hereinafter, the invention concerns a photocathode having a reflector for reflecting incident electromagnetic radiation, and an interference means for causing interference of electromagnetic radiation reflected from the reflector and incident electromagnetic radiation. The reflector and the interference means are adapted to cause the interference to result in an electromagnetic field zero at or near the surface of the interference means for incident electromagnetic radiation at a first selected wavelength, and to cause an electromagnetic field maximum at or near the surface for a second preselected electromagnetic wavelength
Document Details
- Document Type
- Technical Report
- Publication Date
- May 26, 1992
- Accession Number
- ADD015770
Entities
People
- John F. Seely
- William R. Hunter
Organizations
- United States Department of the Navy