Maryland's Defense Patent Database

The defense community in Maryland is an R&D powerhouse.

Use this database to see the innovative patents that are poised for commercialization.

Photodetectors using resonance and method of making

Patent image

An infrared photodetector comprising: a thin contact layer substantially transparent to infrared light; an absorption layer positioned such that light admitted through the substantially transparent thin contact area passes through the absorption layer; the absorption layer being configured to utilize resonance to increase absorption efficiency; at least one reflective side wall adjacent to the absorption layer being substantially non-parallel to the incident light operating to reflect light into the absorption layer for absorption of infrared radiation; and a top contact layer positioned adjacent to the active layer. A method of designing a photodetector comprising selecting a type of material based upon the wavelength range to be detected; determining a configuration geometry; calculating the electromagnetic field distributions using a computer simulated design of the configuration geometry, and determining a quantum efficiency spectrum at the desired wavelength or wavelength range; whereby the effectiveness of the photodetector is simulated prior to fabrication.

Choi, Kwong-kit
Patent Number: 
Technical domain: 
Materials and Coatings
FIle Date: 
Grant Date: 
Grant time: 
943 days
Grant time percentile rank: 
Claim count percentile rank: 
Citations percentile rank: 
'Cited by' percentile rank: