Radiation detector and method therefor
First Claim
1. An apparatus comprising a first detector operative for providing a photoconductive response in response to receipt of a first radiation signal, wherein the first detector includes a first detector pixel comprising:
- a first layer that comprises a first material that is substantially transparent for the first radiation signal; and
a first arrangement of features located in a first region of the first layer, the first arrangement of features being dimensioned and arranged to excite surface states that generate charge carriers in response to at least a portion of the first radiation signal.
1 Assignment
0 Petitions
Accused Products
Abstract
MIR spectroscopy systems comprising hierarchical spectral dispersion that enables fine spectral resolution and high sensitivity spectroscopy are disclosed. Hierarchical spectral dispersion is derived by employing at least two diffractive lens arrays, located on either side of a test sample, each receiving input radiation having an input spectral range and distributing the input radiation into a plurality of output signals, each having a fraction of the spectral range of the input radiation. As a result, the signal multiplication factor of the two arrays is multiplied in a manner that mitigates the propagation of wavelength harmonics through the system. In some embodiments, an emitter array comprising a plurality of spectrally selective emitters provides the input MIR radiation to a spectroscopy system. In some embodiments, spectrally selective detectors are used to detect narrow spectral components in the radiation after they have passed through the test sample.
-
Citations
27 Claims
-
1. An apparatus comprising a first detector operative for providing a photoconductive response in response to receipt of a first radiation signal, wherein the first detector includes a first detector pixel comprising:
-
a first layer that comprises a first material that is substantially transparent for the first radiation signal; and a first arrangement of features located in a first region of the first layer, the first arrangement of features being dimensioned and arranged to excite surface states that generate charge carriers in response to at least a portion of the first radiation signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. An apparatus comprising a first detector operative for detecting a first radiation signal, wherein the first detector comprises:
-
a first layer comprising a first material that is substantially transparent for the first radiation signal; and a first detector pixel having a first photoconductive response, the first detector pixel comprising a first photonic crystal located in a first region of the first layer, the first photonic crystal being dimensioned and arranged to excite surface states that generate free-carrier pairs in response to receipt of at least a portion of the first radiation signal. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
-
-
17. A method comprising:
-
receiving a first radiation signal at a detector, the detector comprising a first detector pixel comprising a first arrangement of features located in a first region of a first layer comprising a first material that is substantially transparent for the first radiation signal; and detecting a first photoconductive response at the first detector pixel, wherein the first photoconductive response is based on free carriers generated by surface states that are excited in the first arrangement of features by at least a portion of the first radiation signal. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
-
Specification