Multi-scale time resolution spectrograph

A time-resolved, spectrometer technology, applied in the field of spectrometers, can solve the problems of low efficiency and accuracy, the inability of optical time-lapse spectrometers to meet dynamics research, and high system costs, to save costs and improve data collection efficiency and accuracy.

Pending Publication Date: 2020-10-09
JIANGSU BC-LIGHT PHOTOELECTRIC HIGH-TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Purpose of the invention: The purpose of the present invention is to provide a multi-scale time-resolved spectrometer to solve the problem that a single optical time-lapse spectrometer cannot meet the needs of kinetic research in a large time scale range, and the two systems have high cost and low efficiency and accuracy. question

Method used

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  • Multi-scale time resolution spectrograph

Examples

Experimental program
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Effect test

Embodiment 1

[0024] Such as figure 1 As shown, the multi-scale time-resolved spectrometer disclosed in this embodiment includes one pump light and one probe light, and the spectrometer includes a light source module, a beam splitter, a modulator 1, a modulator 2, an amplifier 1, an amplifier 2, and a pump light generator Module, probe light generation module, time delay module, sample chamber and data acquisition module, the light source module generates laser light with a specified wavelength, which can be a femtosecond laser system or a picosecond laser system, including an oscillator and an amplifier; the beam splitter is set on the light source Afterwards, the laser beam output by the light source is divided into two beams, and a fiber beam splitter, a beam splitter or other beam splitting optical components can be used; the modulator 1 and the modulator 2 are respectively arranged on the two beam-splitting paths , controlling the light at different times is also called the seed light ...

Embodiment 2

[0026] Such as figure 2 As shown, the multi-scale time-resolved spectrometer disclosed in this embodiment has 2 detection light modules and 2 optical delay modules. The detection light is composed of detection light 1 and detection light 2. 1 may be a narrow-linewidth laser generating module, and the probe light 2 is arranged behind the amplifier 3 for generating narrow-pulse laser light.

[0027] The delay module includes an optical delay module and an electronic delay module. The optical delay module includes two optical delay modules: the first optical delay module 1 is set at any position between the modulator and the sample in the pump light path , by changing the optical path difference between the pump light and the two probe lights, the delay is generated and controlled, generally from tens of attoseconds to tens of nanoseconds; the second optical delay module 2 is set at the detection At any position between the modulator and the sample in any optical path of the li...

Embodiment 3

[0029] Such as image 3 As shown, the difference between the multi-scale time-resolved spectrometer disclosed in this embodiment and Embodiment 2 is that the two detection lights are composed of one amplifier module, the detection light 1 module and the detection light 2 module, which can save a modulator and amplifier, and the optical path more concise.

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Abstract

The invention discloses a multi-scale time resolution spectrograph. The spectrograph comprises a light source module and a sample chamber, wherein a beam splitter, a modulator, an amplifier and a light generation module are sequentially arranged on a light path from the light source module to the sample chamber; the light generation module comprises a pump light generation module and a detection light generation module; an optical delay module is arranged on the light path between the modulator and the pump light generation module or the detection light generation module; and an electronic delay module is arranged between the light source module and the modulator. According to the invention, optical time delay and electronic time delay are combined, time delay of multiple time scales fromfemtosecond to millisecond can be achieved, multi-scale time resolution spectrum measurement is completed, and microcosmic to macrocosmic time resolution spectrums are obtained; and the spectrograph can be used on the same device, cost is saved, and data collection efficiency and accuracy are improved.

Description

technical field [0001] The invention relates to a spectrometer, in particular to a multi-scale time-resolved spectrometer. Background technique [0002] In the fields of physics, chemistry, biology, materials, etc., it is necessary to understand the changes in the state of things over time when things are stimulated by the outside world, also known as pumping, that is, to study the dynamics of things through time-resolved methods. Evolution, such as the study of solar cell materials, light-emitting diodes, photocatalysis, two-dimensional materials, photosynthesis and other systems after optical pump pulse excitation, the molecular structure, carrier energy, phonon temperature and other physical and chemical parameters of the system change with time dynamic changes that occur. Time-resolved spectroscopy, in terms of time scale, time-resolved spectroscopy with a time scale of several femtoseconds to tens of nanoseconds can be realized in the same device by the method of optic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J3/02G01J3/28G01N21/01G01N21/27
CPCG01J3/0205G01J3/027G01J3/2889G01N21/01G01N21/27
Inventor 蔡贞贞仲路铭甘继伟
Owner JIANGSU BC-LIGHT PHOTOELECTRIC HIGH-TECH CO LTD
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