Unlock instant, AI-driven research and patent intelligence for your innovation.

Non-coaxial transmission ultrafast transient absorption system and measurement method with temperature field control function

A transient absorption, non-coaxial technology, applied in the field of optical detection, can solve the problems of inaccurate detection of signals, influence of signal authenticity, poor system signal-to-noise ratio, etc.

Active Publication Date: 2021-07-06
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the measurement technology of transient absorption spectrum is very important and develops rapidly, but there are the following problems: (1) For the samples to be tested, only some samples with relatively strong absorption signals can be selected, and for samples with weak signals, due to the signal-to-noise ratio of the system Poor, cannot accurately detect its signal
(2) The transient absorption spectrum technology based on the ultrafast fiber optic spectrometer as the spectrum acquisition device has not yet dealt with the background noise well, which seriously affects the authenticity of the signal

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Non-coaxial transmission ultrafast transient absorption system and measurement method with temperature field control function
  • Non-coaxial transmission ultrafast transient absorption system and measurement method with temperature field control function
  • Non-coaxial transmission ultrafast transient absorption system and measurement method with temperature field control function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0037] like figure 1 As shown, a beam of pulsed laser light produced by the femtosecond pulsed laser 1 passes through the first total reflection mirror 2 and the second total reflection mirror 3, and then is divided into two beams of pulsed light by the first beam splitter 4: one of them is reflected light, and the other One beam is transmitted light. After the reflected light converges to the nonlinear frequency doubling crystal 6 through the first convex lens 5, the frequency doubling light is collimated by the second convex lens 7 into a parallel beam passing through the first optical filter 8, the first Glan-Taylor prism 9, and the third total reflection The mirror 10 , the chopper 11 , and the fourth total reflection mirror 12 are converged by the third convex lens 36 to the sample 25 in the variable temperature chamber 24 , and the pumping light emitte...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a non-coaxial transmission type transient absorption measurement system and method with the function of regulating and controlling the temperature field, and belongs to the technical field of optical detection. The present invention uses FPGA technology to synchronize processes such as femtosecond laser emitting laser pulses, chopper modulating laser pulse frequency, and fiber optic spectrometer collection with each other. This method can effectively improve the real-time reliability of the test results of the measurement system and the signal-to-noise of the system. At the same time, the present invention integrates the transient absorption device with the confocal microscopic imaging and temperature field control device, so that the transient absorption spectrum information of the microscopic material at different temperatures can be tested, and the photoexcited carrier relaxation of the material at different temperatures can be obtained. Pregnancy dynamics. The system adopts automatic measurement and has the characteristics of fast, efficient and sensitive.

Description

technical field [0001] The invention belongs to the technical field of optical detection, and specifically refers to a non-coaxial transmission ultrafast transient absorption system and a measurement method with the function of regulating and controlling the temperature field. Background technique [0002] The transient absorption spectroscopy device is an important scientific instrument for studying the excited state dynamics information of materials. Compared with the transient fluorescence spectroscopy device, the advantage of the transient absorption spectroscopy technique is that even if the sample does not emit light, the excited state dynamics can be analyzed. It has an irreplaceable position in the study of the dynamics of non-radiative recombination processes. The system uses pump light as excitation, and a large number of photogenerated carriers are generated in the sample, accompanied by processes such as band filling, band gap reformation, defect state filling, a...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/31G01J3/42G01J3/02
CPCG01J3/0286G01J3/42G01N21/31
Inventor 王俊张天举
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com