Title:
SYSTEMS AND METHODS FOR DETECTING MULTIPLE INFRARED BANDS
Document Type and Number:
Japanese Patent JP2015038977
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a dual-band infrared detector which achieves proper alignment of the valence band energy levels of barrier layers and multiple absorption layers in the detector structure designed for detection of infrared radiation in multiple spectral bands.SOLUTION: A dual-band infrared detector 102 includes a first absorption layer 202, a barrier layer 204 coupled to the first absorption layer, and a second absorption layer 206 coupled to the barrier layer. The first absorption layer is sensitive to only a first infrared wavelength band, and the second absorption layer is sensitive to only a second infrared wavelength band that is different from the first infrared wavelength band. The dual-band infrared detector is capable of detecting the first wavelength band and the second wavelength band by applying a first bias voltage of a first polarity to the first absorption layer and by applying a second bias voltage of a second polarity that is opposite the first polarity to the second absorption layer, where the first bias voltage and the second bias voltage each have the magnitude of less than about 500 mV.
Inventors:
RAJESH D RAJAVEL
TERENCE J DELYON
TERENCE J DELYON
Application Number:
JP2014143900A
Publication Date:
February 26, 2015
Filing Date:
July 14, 2014
Export Citation:
Assignee:
BOEING CO
International Classes:
H01L31/0264; G01J1/02
Domestic Patent References:
| JP2010192815A | 2010-09-02 | |||
| JP2012151661A | 2012-08-09 | |||
| JP2013034123A | 2013-02-14 |
Foreign References:
| US20130146998A1 | 2013-06-13 | |||
| US20100072514A1 | 2010-03-25 | |||
| US20120145996A1 | 2012-06-14 | |||
| US20080111152A1 | 2008-05-15 |
Other References:
E. PLIS ET AL.: ""Voltage Controllable dual-band response from InAs/GaSb strained layer superlattice detectors with n", ELECTRONICS LETTERS, vol. 47, no. 2, JPN6018021680, 2011, pages 133 - 134, XP006037528, ISSN: 0004172773, DOI: 10.1049/EL:20103096
Attorney, Agent or Firm:
Yoshitaka Sonoda
Yoshinori Kobayashi
Yoshinori Kobayashi