Infrared-radiation detector device

Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

25037001, 25037008, 25037012, 357 4, 357 30, H01J 4014

Patent

active

048945269

ABSTRACT:
A narrow-bandwidth, high-speed infrared radiation detector is based on tunneling of photo-excited electrons out of quantum wells. Infrared radiation incident on a superlattice of doped quantum wells gives rise to intersubband resonance radiation which excites electrons from the ground state into an excited state. A photocurrent results from excited electrons tunneling out of quantum wells. Conveniently, Group III-V materials can be used in device manufacture. Preferably, quantum well potential barriers are shaped so as to facilitate resonant tunneling of photocurrents as compared with dark current. Preferred device operation is at elevated bias voltage, giving rise to enhancement of photocurrent by a quantum-well-avalanche effect.

REFERENCES:
patent: 4525731 (1985-06-01), Chappell et al.
patent: 4561005 (1985-12-01), Shannon
patent: 4581621 (1986-04-01), Reed
patent: 4607272 (1986-08-01), Osbourn
patent: 4620214 (1986-10-01), Margalit et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Infrared-radiation detector device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Infrared-radiation detector device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Infrared-radiation detector device will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1336202

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.