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Velocity transfer laser spectroscopy measurement device and method of v-type energy level structure atoms

An atomic and laser technology, applied in the field of laser spectroscopy and laser frequency stabilization, it can solve the problems of low signal-to-noise ratio and weak oscillator strength energy level signal, and achieve the effect of eliminating redundant cross peaks.

Inactive Publication Date: 2016-06-15
ZHEJIANG UNIV CITY COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] For atoms with a V-type energy level structure, Doppler spectrum or saturated absorption spectrum is generally used to measure the spectrum. This technique is very weak for energy level signals with very low oscillator strength, and the signal-to-noise ratio of direct measurement is often relatively low. Low

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  • Velocity transfer laser spectroscopy measurement device and method of v-type energy level structure atoms
  • Velocity transfer laser spectroscopy measurement device and method of v-type energy level structure atoms

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Embodiment 1

[0021] figure 1 As shown, a V-type energy level structure atomic velocity transfer laser spectroscopy measurement device described in this embodiment includes a first laser 1, a second laser 5, a first dichroic mirror 2, a second dichroic mirror 4, the first photodetector 6, the second photodetector 9 and a total reflection mirror 7; the laser light emitted by the first laser is divided into two beams when passing through the first dichroic mirror, and one beam is transmitted through the first dichroic mirror in turn. A dichroic mirror and the second dichroic mirror finally reach the first photodetector; the other beam is reflected by the first dichroic mirror and then reaches the second photodetector after being reflected by the total reflection mirror; The laser light emitted by the second laser is reflected by the second dichroic mirror and reaches the first dichroic mirror along the optical path of the laser emitted by the first laser; 85 Rb and 87 The rubidium atom vapo...

Embodiment 2

[0031] The difference between this embodiment and embodiment 1 is: the described natural ingredients 85 Rb and 87 The rubidium atom vapor bubbles of Rb 8 are replaced with only 85 Rb or 87 The rubidium atom vapor bubble of Rb can also realize the function of frequency calibration.

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Abstract

The invention discloses a V-type energy level structure atomic velocity transfer laser spectrum measurement device and method. The laser light emitted by the first laser of the device is divided into two beams when passing through the first dichroic mirror, and one beam is sequentially transmitted through the first dichroic mirror. The dichroic mirror and the second dichroic mirror finally reach the first photodetector; the other beam is reflected by the first dichroic mirror and then reaches the second photodetector after being reflected by the total reflection mirror; The laser light emitted by the second laser is reflected by the second dichroic mirror and reaches the first dichroic mirror along the optical path of the laser emitted by the first laser; To measure the atomic sample, a pure isotopic atomic sample is set on the optical path between the first dichroic mirror and the second dichroic mirror. The spectrum measured by the invention has the characteristics of sub-Doppler, there is no cross peak in the absorption spectrum, and the high and low excited state atomic spectra can be measured simultaneously.

Description

technical field [0001] The invention belongs to the technical field of laser spectrum and laser frequency stabilization, and relates to a method for realizing velocity transfer laser spectrum measurement of V-type energy level structure atoms, which can be applied to multi-wavelength laser frequency stabilization. Background technique [0002] In the current field of laser spectroscopy and laser frequency stabilization technology, technologies and implementation methods such as atomic saturated absorption laser spectroscopy, atomic polarization polarization spectroscopy, and Zeeman external magnetic field modulation spectroscopy are commonly used for high-precision measurement of atomic energy level structures, laser frequency stabilization and other applications. Specifically, the photodetector is used to collect the absorption spectrum signal of the corresponding wavelength of the external laser between various media such as atoms, molecules or ions and the corresponding qu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/39
Inventor 凌俐毕岗
Owner ZHEJIANG UNIV CITY COLLEGE