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公开(公告)号：US20210108968A1
公开(公告)日：2021-04-15
申请号：US17067345
申请日：2020-10-09
Applicant: Trustees of Boston University , Purdue Research Foundation
Inventor： Ji-Xin Cheng , Delong Zhang , Lu Lan
Abstract: A method includes directing a first plurality of probe laser pulses through a sample, dividing each of the first plurality of probe laser pulses to generate a first interferogram, and generating first image data reproducible as a first phase image of the sample. A plurality of pump laser bursts are directed onto the sample to heat the sample. A second plurality of probe laser pulses are directed through the sample at a predetermined time delay. Each of the second plurality of probe laser pulses are divided to generate a second interferogram. Second image data is generated that is reproducible as a second phase image of the sample. A transient phase shift is determined in the second phase image relative to the first phase image. A vibrational spectroscopy property is determined of the sample based on the transient phase shift, thereby allowing an identification of chemical bond information of within the sample.
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