Impurity band optical filter

Details Impurity band optical filter Impurity band optical filter

1992-01-13

1995-08-22

Lobo, Ian J.

Optical: systems and elements

Absorption filter

359359, 257468, G02B 522, H01L 3100

Patent

active

054445779

ABSTRACT:
An optical filter for an infrared detector is provided by creating an impurity band in a semiconductor substrate onto which the infrared detector is epitaxially grown. The impurity band provides a range of absorption and a long wavelength pass band characteristic. The range of absorption is broadened by doping the substrate with a dopant of different photoelectric threshold from the dopant used to create the impurity band.

REFERENCES:
patent: 3020406 (1962-02-01), Whitney
patent: 4004148 (1977-01-01), Howard et al.
patent: 4142198 (1979-02-01), Finnila et al.
patent: 4190851 (1980-02-01), Finnila et al.
patent: 4246590 (1981-01-01), Thomas et al.
patent: 4300811 (1981-11-01), Ettenberg et al.
patent: 4568960 (1986-02-01), Petroff et al.
patent: 4871220 (1989-10-01), Kolin
Krabach et al, "Extrinsic Germanium Blocked Impurity Band Detector," Proceedings of the Third Infrared Detector Technolgy Workshop, pp. 117-123, Oct. 1989.

Affiliated with

Also associated with

Rating

Impurity band optical filter does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Impurity band optical filter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Impurity band optical filter will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2146139