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US 12,222,242 B2Granted
Linearization of mercury cadmium telluride photodetectors
AssigneeThermo Electron Scientific Instruments LLC
InventorNicolai Bech Mortensen
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Abstract
Methods for linearization of photodetector response include establishing one or more static calibration coefficients based on comparison of test photodetector response to a linear reference photodetector. In some examples, dynamic calibration coefficients are determined based on average photodetector signals. In some applications such as FTIR, linearized ratios are obtained with a single calibration coefficient.
Claims13
A method, comprising:
- directing a modulated optical beam to a test photodetector;
- obtaining a modulation amplitude of a photo-signal associated with detection of a first portion of the modulated optical beam by the test photodetector;
- based on the modulation amplitude of the photo-signal from the test photodetector, determining at least one first calibration coefficient operable to linearize the test photodetector;
- and
- storing the at least one first calibration coefficient in a memory device.
2 more elements
Dependencies are inferred from the claim text.