Patent ID: 11885681
Assignee: PENDAR TECHNOLOGIES, LLC
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A method of Raman spectroscopy of a sample, the method comprising:
illuminating the sample, via a telescope, with a first ranging beam propagating along an optical axis of the telescope to form a first spot on the sample;
illuminating the sample, via the telescope, with a second ranging beam propagating along a marginal ray of the telescope to form a second spot on the sample;
detecting a distance between the first spot and the second spot;
adjusting a focus of the telescope based on the distance between the first spot and the second spot;
illuminating the sample, via the telescope, with a Raman pump beam propagating along the optical axis of the telescope; and
measuring a Raman signal scattered by the sample in response to the Raman pump beam.