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A reflective optical path transient absorption spectrometer

A transient absorption and reflection technology, applied in the field of spectral radiation testing, can solve the problems of restricting the application range of instruments

Active Publication Date: 2016-08-10
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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Problems solved by technology

[0003] Currently commercialized transient absorption spectrometers usually use figure 1 The transmission optical path shown means that the spectrometer detects the probe light after passing through the sample, so it can only test transparent samples such as solutions and single crystals, but cannot test samples such as solid powders and non-transparent films. test, seriously restricting the scope of application of the instrument

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  • A reflective optical path transient absorption spectrometer
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Embodiment Construction

[0012] Such as figure 2 As shown, the pump light source adopts a femtosecond laser system, which is composed of a laser oscillator, a laser amplifier and an optical parametric amplifier. The seed laser output by the laser oscillator is amplified by the amplifier to output a laser with a wavelength of 800nm, a repetition frequency of 1000Hz, and a pulse width of less than 120fs. After the laser beam passes through the beam splitter, a beam is incident on the gemstone crystal to produce white light as figure 2 The probe light 2 in the middle; the other beam passes through the optical parametric amplifier to generate a continuous tunable femtosecond laser of 240-2600nm as figure 2 The pump light in 1. The pump light is directly incident on the sample after passing through a mirror, and is used to excite the sample from the ground state to the excited state; while the probe light is divided into two beams by the beam splitter 5 after passing through the optical delay line, an...

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Abstract

The invention relates to a reflection type optical path transient state absorption spectrometer, which mainly comprises an optical source, an optical delay line, a sample holder, a lens, a reflector, a diaphragm, a filter, a detector and other optical components. Compared to the traditional transmission type optical path transient state absorption spectrometer, the reflection type optical path transient state absorption spectrometer of the present invention has the following characteristics that: transient state absorption spectrum tests on powder, non-transparent films and other samples can be achieved.

Description

technical field [0001] The invention belongs to the field of spectral radiation testing, and in particular relates to a reflective optical path transient absorption spectrometer. Background technique [0002] Transient absorption spectrometer is an important scientific instrument, which has important applications in the fields of physics, chemistry, materials, biology and medicine, such as (1) heavy element photophysics and photochemistry; (2) excited state physics, lattice Relaxation kinetics and chemical reaction kinetics, etc.; (3) Research and development of photovoltaic devices, luminescent and display materials, nanomaterials, biomedical diagnosis and testing, etc. The basic structure of a conventional transmission optical path transient absorption spectrometer is as follows: figure 1 As shown, the pump laser is incident on the sample to excite the sample from the ground state to the excited state, and the probe beam is incident on the sapphire crystal after optical d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/63G01N21/31G01J3/42
Inventor 朱浩淼马恩李仁富陈学元
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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