Corner cube enhanced photocathode
US8581228B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 20, 2010 |
| Grant date | Nov 12, 2013 |
| Priority date | — |
| Expiry date | Jan 20, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J9/12
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Techniques are disclosed for improving the quantum efficiency of photocathode devices. The techniques allow for an increase in the optical thickness of the photocathode device, while simultaneously allowing for an increase in the probability of electron escape into the vacuum of the device. The techniques are particularly useful in detector and imaging. In one embodiment, a photocathode device is provided that has an array of corner cubes fabricated in a surface of the photocathode. The corner cube array is made of the same material as the photocathode layer. The device may be, for example, a detector or image intensifier that operates in the UV, visible, and IR light spectrums, and may further include a gain medium, anode, and readout device. Techniques for forming the device are also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.