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1. (WO1997015812) POLARIZATION SENSITIVE PHOTODETECTORS AND DETECTOR ARRAYS
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1997/015812 International Application No.: PCT/US1996/017188
Publication Date: 01.05.1997 International Filing Date: 25.10.1996
Chapter 2 Demand Filed: 22.05.1997
IPC:
G01J 4/04 (2006.01) ,G11B 11/105 (2006.01) ,G11B 7/13 (2012.01) ,H01L 27/148 (2006.01)
G PHYSICS
01
MEASURING; TESTING
J
MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
4
Measuring polarisation of light
04
Polarimeters using electric detection means
G PHYSICS
11
INFORMATION STORAGE
B
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
11
Recording on, or reproducing from, the same record carrier wherein for these two operations the methods or means are covered by different main groups of groups G11B3/-G11B7/212; Record carriers therefor
10
using recording by magnetisation or demagnetisation
105
using a beam of light or a magnetic field for recording and a beam of light for reproducing, e.g. light-induced thermo-magnetic recording, Kerr effect reproducing
G PHYSICS
11
INFORMATION STORAGE
B
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
7
Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation, reproducing using an optical beam at lower power; Record carriers therefor
12
Heads, e.g. forming of the optical beam spot or modulation of the optical beam
13
Optical detectors therefor
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
L
SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
27
Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
14
including semiconductor components sensitive to infra-red radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation
144
Devices controlled by radiation
146
Imager structures
148
Charge coupled imagers
Applicants:
TRUSTEES OF BOSTON UNIVERSITY [US/US]; 147 Bay State Road Boston, MA 02215, US
Inventors:
UNLU, M., Selim; US
ONAT, Bora; US
Agent:
KLOCINSKI, Steven, P. ; Baker & Botts, L.L.P. The Warner 1299 Pennsylvania Avenue, N.W. Washington, DC 20004, US
Priority Data:
08/679,92215.07.1996US
60/006,00526.10.1995US
Title (EN) POLARIZATION SENSITIVE PHOTODETECTORS AND DETECTOR ARRAYS
(FR) PHOTODETECTEURS ET RESEAUX DE PHOTODETECTEURS SENSIBLES A LA POLARISATION
Abstract:
(EN) A device for detecting polarization of light comprising a first photodetector tuned to absorb TE polarization, a second photodetector tuned to absorb TM polarization, and a circuit for comparing an output from the first and second photodetector for generating a polarization output. The first photodetector comprises a first reflector, an absorption layer on top of the first reflector, and a second reflector on top of the absorption layer. The second photodetector comprises a third reflector on top of an absorption layer, and a fourth reflector disposed under absorption layer.
(FR) L'invention porte sur un dispositif de détection de lumière polarisée, comportant un premier photodétecteur accordé pour absorber la polarisation TE, un deuxième photodétecteur accordé pour absorber la polarisation TM, et un circuit de comparaison des signaux des deux détecteurs, produisant un signal de polarisation. Le premier photodétecteur comprend un premier réflecteur, une couche d'absorption le recouvrant, et un deuxième réflecteur recouvrant la couche d'absorption. Le deuxième photodétecteur comprend un troisième réflecteur, recouvrant une couche d'absorption et un quatrième réflecteur placé sous la couche d'absorption.
Designated States: AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, CA, CH, CN, CU, CZ, DE, DK, EE, ES, FI, GB, GE, HU, IL, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, TJ, TM, TR, TT, UA, UG, UZ, VN
African Regional Intellectual Property Organization (ARIPO) (KE, LS, MW, SD, SZ, UG)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, CH, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
JPH11514085 CA2235922AU1996074773