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Modularized femtosecond time-resolved transient absorption and fluorescence depletion two-in-one spectrometer

A time-resolved, transient absorption technology, applied in absorption/scintillation/reflection spectroscopy, emission spectroscopy, spectrum investigation, etc., which can solve the problems of long operator time, high cost, inconvenient optical path adjustment and change

Active Publication Date: 2015-03-18
ZHANGJIAGANG IND TECH RES INST CO LTD DALIAN INST OF CHEM PHYSICS CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Due to the high requirements for experimental technicians to build femtosecond time-resolved pump-probe spectrometers, sometimes there are many optical path systems in the laboratory, such as femtosecond time-resolved transient absorption spectrometer and femtosecond time-resolved fluorescence extinction spectrometer, at this time It is very inconvenient to adjust and change the optical path. It usually requires very professional experimenters to operate and maintain it. It takes a long time to train new operators and the cost is high. These restrict the femtosecond time-resolved pump-probe spectroscopy technology. promotion and application of

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  • Modularized femtosecond time-resolved transient absorption and fluorescence depletion two-in-one spectrometer
  • Modularized femtosecond time-resolved transient absorption and fluorescence depletion two-in-one spectrometer
  • Modularized femtosecond time-resolved transient absorption and fluorescence depletion two-in-one spectrometer

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Embodiment 1

[0042] For the investigation of the performance of the modular femtosecond time-resolved transient absorption and fluorescence loss spectrometer described in the present invention when measuring the femtosecond time-resolved transient absorption spectrum, a 0.1mmol / L ethanol solution of OX750 dye was used as a sample , to measure the femtosecond time-resolved transient absorption spectrum signal, the length of the optical plate is 120cm, the width is 60cm, the pump light is 400nm, the probe light is 800nm, the frequency is 1000Hz, the pump light path is 90cm, and the probe light path is 237cm, the chopper rotation frequency is 50Hz, and the nonlinear crystal is 2mm thick sapphire. The obtained femtosecond time-resolved transient absorption spectrum signal is as follows figure 2 shown.

[0043] figure 2 The wavelength coordinates in the graph represent the spectral range of the probe light, the time delay coordinates are the time coordinates obtained from the time delay line...

Embodiment 2

[0046] For the investigation of the time-resolved spectral performance of the modular femtosecond time-resolved transient absorption and fluorescence loss two-in-one spectrometer described in the invention in different laboratories, in two femtosecond laboratories, 0.1mmol / L of TH301 dye was used The ethanol solution is used as the sample, the pump light is 400nm, and the probe light is 630nm. The femtosecond time-resolved fluorescence loss spectrum signal is measured, and the obtained femtosecond time-resolved fluorescence loss spectrum signal is as follows: image 3 shown.

[0047] image 3 The femtosecond time-resolved fluorescence loss spectra measured by the same femtosecond time-resolved transient absorption and fluorescence loss spectrometer in two laboratories are shown in . image 3 The time delay coordinates of are obtained from the time delay line, image 3 The total coordinates of are the fluorescence-depleted spectral intensities. image 3 The signal at positio...

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Abstract

The invention relates to a time-resolved spectrum measurement instrument, in particular to a modularized femtosecond time-resolved transient absorption and fluorescence depletion two-in-one spectrometer. The modularized femtosecond time-resolved transient absorption and fluorescence depletion two-in-one spectrometer comprises an instrument optical flat, a pumping light path system and a probing light path system consisting of a plane mirror, a convex lens, a light diaphragm, a light filter, a time delay line, nonlinear optical crystals and a sample system, and also comprises a spectrum detection system. Since the spectrometer uses the optical flat as a bottom plate and various optical components, the modularization of the instrument is realized and the instrument can be moved on the whole; since a femtosecond time-resolved transient absorption spectrometer and a femtosecond time-resolved fluorescence depletion spectrometer are integrated into one, working personnel can conveniently conduct adjustment and the spectrometer can be widely popularized and used.

Description

technical field [0001] The invention relates to a time-resolved spectrum measuring instrument, specifically a modular femtosecond time-resolved transient absorption and fluorescence loss two-in-one spectrometer. The spectrometer uses an optical plate and various optical components to realize the module of the instrument. The instrument can be moved as a whole, and the femtosecond time-resolved transient absorption spectrometer and the femtosecond time-resolved fluorescence loss spectrometer are combined into one, which can be easily adjusted by the staff, so that it can be widely used. Background technique [0002] Time-resolved pump-probe technology [Principles and Technical Basis of Ultrafast Laser Spectroscopy, edited by Weng Yuxiang, Chen Hailong, etc., 2013, Chemical Industry Press], also known as excitation-probe double-pulse technology [Basics of Time-Resolved Spectroscopy, Guo Foundation, 2012, Higher Education Press], has a wide range of applications in many fields ...

Claims

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Application Information

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IPC IPC(8): G01J3/42G01J3/443
Inventor 韩克利羊送球刘建勇周潘旺徐大力
Owner ZHANGJIAGANG IND TECH RES INST CO LTD DALIAN INST OF CHEM PHYSICS CHINESE ACADEMY OF SCI
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