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High-stability modulation transfer spectrum frequency stabilization optical path device

A high-stability, spectral technology, applied in the direction of circuits, lasers, laser components, etc., can solve the problems of difficult adjustment and poor stability of the modulation transfer absorption frequency stabilization optical circuit device, so as to meet the engineering use conditions and improve the alignment accuracy , The effect of reducing the optical mechanical components

Inactive Publication Date: 2020-11-03
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0008] In order to solve the technical problems of difficult adjustment and poor stability of the existing modulation transfer absorption frequency stabilization optical circuit device, the present invention proposes a high stability modulation transfer spectrum frequency stabilization optical circuit device, which is simple in structure, easy to adjust, and has strong The stability of the laser can provide a stable frequency discrimination signal for laser frequency stabilization

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  • High-stability modulation transfer spectrum frequency stabilization optical path device
  • High-stability modulation transfer spectrum frequency stabilization optical path device
  • High-stability modulation transfer spectrum frequency stabilization optical path device

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Embodiment Construction

[0046] The present invention will be further described below in conjunction with specific embodiments and accompanying drawings, but the protection scope of the present invention should not be limited thereby.

[0047] like figure 2 As shown, the present invention includes a first polarization beam splitter 201, a half-wave plate 202, a second polarization beam splitter 203 with an inclined reflective surface arranged in sequence along the same optical axis; in the second polarization beam splitter An electro-optic modulator 204 and a trapezoidal prism 205 are sequentially arranged along the same optical axis on the transmission optical path of 203; an atomic source glass bubble 206 and a third polarizing beam splitter 208 are sequentially arranged on the reflection optical path of the second polarizing beam splitter 203; On the reflected optical path of the third polarization beam splitter 208, a focusing lens 209 and a photodetector 210 are sequentially arranged along the s...

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Abstract

In order to solve the technical problems that an existing modulation transfer absorption frequency stabilization light path device is difficult to adjust and poor in stability, the invention providesa high-stability modulation transfer spectrum frequency stabilization light path device, signal light and modulated light are reflected by using a trapezoidal prism and a polarization beam splitter; compared with a reflector structure, the device saves optical machine elements of an optical system, and simplifies the structure; during light path adjustment, only the trapezoidal prism or the secondpolarization beam splitter with the inclined reflecting surface needs to be adjusted, so the adjustment difficulty is greatly reduced, and the requirement for light path collimation is low; after thetrapezoidal prism is fixed, the light path is not easily affected by external vibration, temperature and other environments, and the stability of the light path is improved.

Description

technical field [0001] The invention relates to a high-stability modulation transfer spectrum frequency-stabilizing optical path device for laser frequency stabilization. Background technique [0002] Semiconductor lasers are widely used in precision spectroscopy, quantum optics, atomic cooling, atomic interference and other fields. In the fields of atomic cooling and atomic interference, it is necessary to stabilize the frequency of semiconductor lasers first. For alkali metal atoms, the method of saturated absorption spectroscopy is usually used to obtain sub-Doppler hyperfine transition lines, and a certain hyperfine transition line As a reference frequency, laser frequency locking is achieved via a suitable electronic negative feedback loop. This method generally requires direct modulation of the laser, which results in additional frequency noise and corresponding intensity noise, and the remaining Doppler background will cause a shift in the center value of the frequen...

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Application Information

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IPC IPC(8): H01S5/0687
CPCH01S5/0687
Inventor 贾森王先华
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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