METHOD FOR FABRICATION CONTROL OF AN OPTICAL INTEGRATED COMPUTATIONAL ELEMENT

摘要

A method controls fabrication of a multi-layered integrated computational element designed to have a target optical spectrum. A transfer function is generated relating a blue wavelength, shift between an as-annealed optical spectrum and an as-fabricated optical spectrum of a first integrated computational element at a standard temperature. Using the transfer function, an initial compensating red shift is incorporated into a second integrated computational element such that the as-annealed optical spectrum of the second integrated computational element matches the target optical spectrum.

主权项

1. A method for fabrication control of an integrated computational element comprising:
fabricating a first integrated computational element to generate a target optical spectrum, the integrated computational element having a plurality of optical material layers wherein each layer has at least one material parameter of interest; measuring an as-fabricated optical spectrum of the first integrated computational element at a standard temperature; annealing the first integrated computational element to a first predetermined annealing temperature for a first predetermined time; measuring the as-annealed optical spectrum of the first integrated computational element at the standard temperature; generating a transfer function relating a wavelength shift of the as-annealed optical transmission spectrum at the standard temperature compared to the as-fabricated optical transmission spectrum at the standard temperature; fabricating a second integrated computational element using the transfer function to modify at least one of the material parameters of interest of at least one of the plurality of optical material layers to shift a second as-annealed optical transmission spectrum of the second integrated computational element to match the target optical spectrum; and annealing the second integrated computational element to the first predetermined annealing temperature for the first predetermined time.