Transmission type multi-alkali photoelectric cathode with wide spectrum response and manufacturing method of cathode
A technology of photocathode and production method, which is applied in the direction of light-emitting cathode production, photo-emission cathode, main electrode of discharge tube, etc.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0034] A non-imaging wide-spectrum response multi-alkali photocathode is manufactured by using a manufacturing method of a wide-spectrum response transmission-type multi-alkali photocathode proposed by the invention. For non-imaging vacuum photodetection devices, radial grids are used when making wide-spectrum response multi-alkali photocathode, see Figure 7 .
[0035] The manufacturing process of the broad-spectrum multi-alkali photocathode adopts the traditional multi-alkali photocathode manufacturing process. The cathode glass window is made of synthetic quartz glass window, and the grade of the material is JGS1. The basic method is to put the cathode glass window, evaporation source K, Na, Cs and Sb, grid, etc. into the vacuum cavity of the cathode production equipment, and then vacuumize the vacuum cavity at 380°C with an oven. Bake for 12 hours. After high temperature baking, the vacuum degree of the vacuum chamber should not be lower than 10 -8 support. After the ...
Embodiment 2
[0040] An image-type wide-spectrum response multi-alkali photocathode is fabricated by using a manufacturing method of a transmission-type multi-alkali photocathode with wide-spectrum response proposed by the invention. For imaging-type vacuum photodetection devices, square hole-shaped grids are used when making multi-alkali photocathode with wide spectral response, see Figure 8 . On the premise of the same duty cycle of the grid, the higher the density of the grid, the higher the resolution of the multi-alkali photocathode.
[0041] The manufacturing process of the broad-spectrum multi-alkali photocathode adopts the traditional multi-alkali photocathode manufacturing process. The cathode glass window is made of synthetic quartz glass window, and the grade of the material is JGS1. The basic method is to put the cathode glass window, evaporation source K, Na, Cs and Sb, grid, etc. into the vacuum cavity of the cathode production equipment, and then vacuumize the vacuum cavit...
Embodiment 3
[0046] The schematic diagram of the surface structure of the multi-alkali photocathode made by the method of the present invention is shown in Figure 5 . From Figure 5 It can be seen that compared with the traditional multi-alkali photocathode, the surface of this multi-alkali photocathode is not flat, and the part blocked by the grid is thinner, which has the characteristics of the S20-B multi-alkali photocathode; The blocked part is thicker and has the characteristics of the S25-R multi-alkali photocathode. The thinner part can have a higher spectral response to ultraviolet light, while the thicker part has a higher spectral response to near-infrared light, so its spectral response is the superposition of the spectral response of thin multi-alkali photocathode and thick multi-alkali photocathode . The typical spectral response curves of the transmissive multi-alkali photocathode made by the method of the present invention are shown in Figure 6 .
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com