Low-temperature polarizing electronic Raman scattering apparatus

A Raman scattering, low temperature technology, applied in the field of optics

Inactive Publication Date: 2005-07-27
NANJING UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

At present, there is no such low-temperature pol

Method used

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  • Low-temperature polarizing electronic Raman scattering apparatus
  • Low-temperature polarizing electronic Raman scattering apparatus

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Embodiment Construction

[0015] A low-temperature polarized electron Raman scattering device according to the present invention, such as figure 1 shown. Among them: 1 is the argon ion laser, 2 is the collimating lens group, 3 is the plasma line filter, 4 is the spatial filter, 5 is the polarization rotator, 6 is the focusing lens, 7 is the mirror, 8 is the sample holder, 9 is the objective lens, 10 is the polarizer, 11 is the spectrometer, 12 is the monitor, 13 is the liquid helium cryostat, 14 is the plane mirror, 15 is the lens, 16 is the pinhole, 17 is the detector, 18 is the computer, 19 is Neutral density filter, 20 is a sample.

[0016] Argon ion laser 1 uses green light at 514nm. The laser light first enters a collimating lens group 2, which can be used to reduce the divergence of the laser light generated by the laser. The collimated laser light enters the plasma line filter 3, because the exiting laser also contains plasma lines of other wavelengths. The plasma filter is to ensure better m...

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Abstract

A Raman scattering device of low temperature polarization electron is featured as setting collimation lens set, plasma filter, space filter, polarization rotator and focal lens in sequence along operation path of argon ion laser; setting reflector behind focal lens to reflect laser beam on sample seat; having objective lens for collecting sample scattering light and polarization plate for selecting direction, setting spectrograph behind the polarization plate and connecting the spectrograph to monitor.

Description

1. Technical field [0001] The invention belongs to the field of optics, in particular to a low-temperature polarized electron Raman scattering device. 2. Background technology [0002] Raman scattering is a common phenomenon of inelastic light scattering. When a beam of light hits the sample, part of it is reflected, and the other part is refracted into the sample. This part of the light entering the sample can interact with various excitation processes in the material. After the interaction, the photons transfer momentum and energy to the sample. The internal excitation produces scattered light emission. In this way, the scattered light carries rich information about the various excitations inside the material. By detecting the scattering spectrum, the intrinsic fundamental properties of the material can be studied in depth. The scattering process here is Raman scattering. [0003] Raman scattering technology has been widely used in modern scientific research and indust...

Claims

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Application Information

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IPC IPC(8): G01N21/65
Inventor 张清明王业宁安明杨震元世魁吴勇
Owner NANJING UNIV
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