Method and apparatus for evaluating the quality of an optical crystal
AssigneeCorning Incorporated
InventorsKlaus D. Hachfeld, Leonid D. Klebanov
Life of this patent
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Abstract
A method for evaluating the quality of an optical material includes obtaining a fluorescence spectrum of the optical material, obtaining a fluorescence spectrum of a reference material having desired performance in a target application, and determining whether a shape of the spectrum of the optical material is similar to a shape of the spectrum of the reference material. If the shape of the spectrum of the optical material is similar to the shape of the spectrum of the reference material, the method includes indicating that the optical material is suitable for the target application; otherwise, the method includes indicating that the optical material is unsuitable for the target application.
Claims23
A method for evaluating the quality of an optical material, comprising:
- obtaining a fluorescence spectrum of the optical material;
- obtaining a fluorescence spectrum of a reference material having desired performance in a target application;
- determining whether a shape of the spectrum of the optical material is similar to a shape of the spectrum of the reference material;
- and
- if the shape of the spectrum of the optical material is similar to the shape of the spectrum of the reference material, indicating that the optical material is suitable for the target application;
- otherwise, indicating that the optical material is unsuitable for the target application.
An apparatus for evaluating the quality of an optical crystal, comprising:
- a source which emits an excitation light;
- an optical element which focuses the excitation light on the optical crystal;
- a spectrometer which detects fluorescence light emitted from the optical crystal, the spectrometer having a line of sight oriented at an angle with respect to a primary axis of the excitation light transmitted through the optical crystal;
- and
- a processor running a process which compares the fluorescence data from the spectrometer to a reference fluorescence spectrum and determines the quality of the optical crystal based on the comparison.
Dependencies are inferred from the claim text.