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Laser frequency stabilization realization method

A realization method and laser technology, applied to lasers, laser components, phonon exciters, etc., can solve problems such as long research period, complex technology, and huge equipment, and achieve compact structure, elimination of Doppler broadening, and stability and the effect of improving reproducibility

Inactive Publication Date: 2014-02-26
THE 41ST INST OF CHINA ELECTRONICS TECH GRP
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Problems solved by technology

Among these optional particles, atomic or ion frequency standards have higher frequency stability, but the technology is complicated, the cost is huge, the research period is long, and the device is huge

Method used

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  • Laser frequency stabilization realization method
  • Laser frequency stabilization realization method
  • Laser frequency stabilization realization method

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Embodiment Construction

[0029] The schematic diagram of the overall process of generating the standard wavelength of 532nm green laser is as follows: figure 1 Shown:

[0030] The 532nm laser output by a single dual-wavelength solid-state laser is incident on the iodine molecular saturation absorption frequency stabilization system. The frequency stabilization system provides a reference frequency with stable frequency. If the frequency of the 532nm laser deviates from the reference frequency, the frequency stabilization system will generate a feedback signal. The feedback signal adjusts the cavity length of the single laser through the servo control system, so that the 532nm laser frequency is stabilized at the reference frequency provided by the frequency stabilization system to ensure the stability of the 532nm laser frequency. Since the 532nm laser is obtained by passing the 1064nm laser output from a single laser resonator through the PPKTP frequency doubling crystal once, the above frequency sta...

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Abstract

The invention provides a laser frequency stabilization realization method. The laser frequency stabilization realization method comprises steps that: step 1, a single-block dual-wavelength laser device is utilized to output 532nm laser; step 2, an iodine saturation absorption frequency stabilization device is utilized to carry out determination processing on the 532nm laser, if a frequency of the 532nm laser deviates from a reference frequency of the iodine saturation absorption frequency stabilization device, a feedback signal is generated by the iodine saturation absorption frequency stabilization device and is sent to a servo control device, and a step 3 is carried out; if the frequency of the 532nm laser is in the reference frequency of the iodine saturation absorption frequency stabilization device, laser frequency stabilization is realized, and no processing is needed; and step 3, chamber length of the single-block dual-wavelength laser device is adjusted by utilizing the servo control device according to the feedback signal, and the frequency of the 532nm laser is made to be in the reference frequency. The laser frequency stabilization realization method greatly improves stability and reproducibility of the frequency of the laser device.

Description

technical field [0001] The invention belongs to the technical field of laser frequency stabilization, and in particular relates to a method for realizing laser frequency stabilization. Background technique [0002] Since the use of methane absorption lines to stabilize the laser frequency, the research on laser frequency stabilization has entered a new stage, and the frequency stability soon reached 10 -11 ~10- 12 order of magnitude. With the deepening of research, people have found more spectral lines and frequency stabilization methods that can be used. Iodine molecule is a simple diatomic molecule, which has about 5000 absorption lines in the (500-650) nm visible light band, especially around 532 nm, iodine molecule has hundreds of strong absorption lines. Since the iodine absorption at 532nm transitions to ground state absorption, the absorption coefficient is large, and the spectral line width is narrower than that at 633nm, so that the signal-to-noise ratio of the s...

Claims

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Application Information

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IPC IPC(8): H01S3/13H01S3/137
Inventor 张洪喜陈坤峰
Owner THE 41ST INST OF CHINA ELECTRONICS TECH GRP
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