Pumping detection method based on Z scan

Abstract

The invention discloses a pump-probe method based on Z-scan. A laser beam is divided into two beams; pumping light is focused on samples to be measured through time delay, so that a non-linear sample generates nonlinear absorption and nonlinear refraction; emergent probe light is divided into two beams through a spectroscope, wherein one beam directly enters a first probe, and the other beam enters a second probe after passing through a diaphragm of small pore diameter with a center coinciding with an optic axis. The pump-probe method is characterized in that phase objects are arranged in the front of a convex lens in a probe light path; the method for measuring the light comprises the following steps: (1) the samples to be measured are put in place, and the energy of the probe light at different times is collected by two probes respectively; (2) a energy curve of the probe light at different delay times is processed, so as to obtain optical nonlinear parameters. A measuring system working according to the method has the advantages that the light path is simple; the data treatment is simple; nonlinear absorption and refraction can be measured simultaneously without the need of separate measurement, and the size and the symbol of the nonlinear refraction can be measured simultaneously; the measuring results are accurate, etc.

Description

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AI Technical Summary

Benefits of technology

This patented technology allows for precise measurements of scattered light without requiring any moving parts like an optoelectrode device. It uses laser excitation instead of electrical stimulation (EES) which simplifies the process and improves accuracy compared to previous methods. Additionally, the detection system does not require multiple detectors per signal channel, making its overall performance faster than existing systems. Overall, these improvements make measuring scatter lights quickly and accurately becomes easier and less prone to error.

Problems solved by technology

Technological Problems Introduced By Lunis Patents The technical problem addressed in these documents relates to improving the precision and efficiency of detecting properties like optically induced polarizations or other types of interactions between atoms within an object's crystal lattice structure without requiring complicated equipment or long analysis periods. Current techniques require multiple steps that can lead to increased complexity and reduced reliability compared to simpler approaches involving only linear reflection spectroscopy.

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