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A Reflective Integrated Device for Sub-Doppler Saturable Absorption Spectroscopy

An integrated device, absorption spectrum technology, applied in lasers, laser parts, electrical components, etc., to achieve the effect of reducing space volume, simplifying optical components, and improving stability

Active Publication Date: 2021-06-11
BEIJING INST OF AEROSPACE CONTROL DEVICES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the above-mentioned defects of the prior art, provide a reflective integrated device for sub-Doppler saturated absorption spectrum, and solve the problems caused by optical elements used for light intensity control, beam splitting and beam combining , significantly enhance the stability and integration of sub-Doppler saturation absorption spectroscopy, and improve the accuracy, stability and integration of related specific applications

Method used

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  • A Reflective Integrated Device for Sub-Doppler Saturable Absorption Spectroscopy
  • A Reflective Integrated Device for Sub-Doppler Saturable Absorption Spectroscopy
  • A Reflective Integrated Device for Sub-Doppler Saturable Absorption Spectroscopy

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Embodiment 1

[0029] Laser source 1 adopts an external cavity tunable semiconductor laser, the model is Toptica DL100, the center wavelength is 780.24nm, the line width is 4MHz, the output power is 101mW, and the laser polarization state is linear polarization; the beam splitter 2 is a thick quartz glass plate with a diameter of 10mm, Ratio 1:99; atomic gas chamber 3 is 10mm 3 Quartz glass cavity, encapsulating rubidium atom vapor, but without adding buffer gas, pressure 10 -7 Torr, provides the nonlinear working medium of atomic spectrum; Partial reflector 4 has a diameter of 10mm, and the reflectivity is 50%; The first photodetector 5 and the second photodetector 6 both adopt Thorlabs FDS02 silicon photocells, and the dark current is 35pA (5V ).

[0030] The following table 1 is a comparison table of the integration degree of the reflective integrated device for sub-Doppler saturated absorption spectroscopy of the present invention and the traditional beam splitting and combining spectra...

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Abstract

The invention relates to a reflective integrated device for sub-Doppler saturated absorption spectrum, which includes a laser light source, a beam splitter, an atomic gas chamber, a partial reflection mirror, a first photodetector and a second photodetector, wherein the laser light source The emitted laser light is divided into two paths through the beam splitter, one path of laser light is emitted outward, and the other path of laser light passes through the atomic gas chamber and reaches the partial reflector. The transmitted light through the partial reflector is received by the second photodetector, and passes through the The reflected light returns along the original optical path, and is received by the first photodetector after successively passing through the atomic gas chamber and the beam splitter. degree and integration.

Description

technical field [0001] The invention relates to the field of laser frequency stabilization, in particular to a reflective integrated device for sub-Doppler saturated absorption spectrum. Background technique [0002] In recent years, with the continuous development of laser light sources, lasers have become an important part of fundamental physics research, precision measurement, and inertial navigation. For specific applications such as quantum simulation, quantum computing, atomic clocks, optical clocks, atomic magnetometers, cold atom interference gyroscopes, SERF gyroscopes, and nuclear magnetic resonance gyroscopes, frequency-stabilized laser light sources are core components. Due to the influence of operating temperature and operating current, the frequency of a free-running laser is unstable. Using the ultra-fine energy level structure spectrum of atoms to stabilize the frequency of the laser at the required resonance transition line is the most basic means to obtain...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S3/13
CPCH01S3/1303
Inventor 姜伯楠张国万李嘉华成永杰徐程魏小刚
Owner BEIJING INST OF AEROSPACE CONTROL DEVICES
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