CN208173999U - A kind of new laser frequency regulator based on Zeemen effect - Google Patents
A kind of new laser frequency regulator based on Zeemen effect Download PDFInfo
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- CN208173999U CN208173999U CN201820861576.0U CN201820861576U CN208173999U CN 208173999 U CN208173999 U CN 208173999U CN 201820861576 U CN201820861576 U CN 201820861576U CN 208173999 U CN208173999 U CN 208173999U
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Abstract
The utility model discloses a kind of new laser frequency regulator based on Zeemen effect, He-Ne laser is successively arranged along light transmission direction, optoisolator, the slide of λ/4 and polarization splitting prism, wherein He-Ne laser is set in the magnetic field being made of coil, a branch of left-handed rotation and a branch of right-handed rotation are split into for realizing the line polarisation for being emitted He-Ne laser, a branch of light splitting of polarization splitting prism is incident to balanced detector, another beam of polarization splitting prism, which is divided, is incident to balanced detector through 45 ° of semi-reflective mirrors, phase sensitive detection module passes through route and He-Ne laser respectively, balanced detector is connected with oscillograph.The utility model high frequency stability and high repdocutbility.
Description
Technical field
The utility model belongs to the Frequency Stabilization Technique field of new laser, and in particular to a kind of based on the novel of Zeemen effect
Laser frequency regulator.
Background technique
Current wide-spread frequency-stabilizing method has Lamb dip frequency stabilization, saturated absorption frequency stabilization, zeeman frequency stabilization and polarization spectrum
Frequency stabilization, comparatively, every kind of frequency stabilization have its superiority and inferiority.Lamb dip frequency stabilization is a kind of earliest frequency-stabilizing method, relative frequency
Stability can only achieve 10-7-10-8Magnitude, and repdocutbility also only only has 10-7-10-8Magnitude；Saturated absorption frequency stabilization is with 10-11~
10-12Frequency stability and 10-11High repdocutbility become presently the most extensive frequency-stabilizing method, but its disadvantage is also because very
Obviously, noise can be introduced during frequency modulation(PFM), to influence signal-to-noise ratio, and long-term stability does not reach requirement；
The frequency stabilization performance of zeeman frequency stabilization reaches standard, but its repdocutbility can only but stay in 10-7~10-8Magnitude, this precision is
Through being far from satisfying in the requirement of contemporary optics scientific experiment；And polarization spectrum frequency stabilization disadvantage is just its line width relative saturation
It absorbs wider.Therefore, the laser steady frequency technology for developing high s/n ratio, high frequency stability and high repdocutbility is particularly important.
Summary of the invention
There is provided a kind of high s/n ratio, high frequency stability and high repdocutbilities for the technical issues of the utility model solves
New laser frequency regulator based on Zeemen effect.
The utility model adopts the following technical scheme that solve above-mentioned technical problem, a kind of novel sharp based on Zeemen effect
Light device frequency regulator, it is characterised in that：Along light transmission direction be successively arranged the slide of He-Ne laser, optoisolator, λ/4 and partially
Shake Amici prism, and wherein He-Ne laser is set in the magnetic field being made of coil, for realizing be emitted He-Ne laser
Line polarisation splits into a branch of left-handed rotation and a branch of right-handed rotation, and a branch of light splitting of polarization splitting prism is incident to balanced detector, partially
Another beam light splitting of vibration Amici prism is incident to balanced detector through 45 ° of semi-reflective mirrors, phase sensitive detection module pass through respectively route with
He-Ne laser, balanced detector are connected with oscillograph.
The utility model has the advantages that compared with prior art：The utility model is generated left using Zeeman splitting
Optically-active and right-handed rotation, the spectrum by detecting left-handed rotation and right-handed rotation respectively can be constant by the negative-feedback signal of phase sensitive detection
The wavelength of laser, and can easily solve the problems, such as the low signal-to-noise ratio in conventional laser Frequency Stabilization Technique, there is current frequency stabilization skill
The art inaccessiable high frequency stability of institute and high repdocutbility.
Detailed description of the invention
Fig. 1 is the device connection figure of the utility model；
Fig. 2 is the frequency stabilization schematic diagram of the utility model.
In figure：1- He-Ne laser, the magnetic field 2-, 3- optoisolator, the slide of 4- λ/4,5- polarization splitting prism, 6-45 ° half
Anti- mirror, 7- balanced detector, 8- phase sensitive detection module, 9- oscillograph.
Specific embodiment
The particular content of the utility model is described in detail in conjunction with attached drawing.As shown in Figure 1, a kind of based on the novel of Zeemen effect
Laser frequency regulator is successively arranged He-Ne laser 1, optoisolator 3, the slide of λ/4 4 and polarization spectro along light transmission direction
Prism 5, wherein He-Ne laser 1 is set in the magnetic field 2 being made of coil, for realizing the line for being emitted He-Ne laser 1
Polarisation splits into a branch of left-handed rotation and a branch of right-handed rotation, so that two beam optically-actives is become line polarisation by optoisolator 3 and the slide of λ/4 4,
A branch of light splitting of polarization splitting prism 5 is incident to balanced detector 7, and another beam of polarization splitting prism 5 is divided through 45 ° of semi-reflective mirrors
6 are incident to balanced detector 7, and phase sensitive detection module 8 passes through route and He-Ne laser 1, balanced detector 7 and oscillograph respectively
9 are connected.
The carrying out practically process of the utility model is：After opening He-Ne laser, the line polarisation of He-Ne laser outgoing exists
A branch of left-handed rotation and a branch of right-handed rotation are split under the action of magnetic field, after optoisolator is protected, then through λ/4 slide phases
45 ° of folder makes two beam optically-actives become line polarisation, and the angle of outgoing beam is 90 °, i.e., respectively P to S to by polarization spectro
A branch of light splitting of prism is incident to balanced detector, and another beam of polarization splitting prism, which is divided, is incident to balance through 45 ° of semi-reflective mirrors
Detector, balanced detector receive the component in polarization splitting prism both direction respectively, and transmit signal to oscillograph and compare
The size of left-handed rotation and right-handed rotation light intensity out, so that frequency discrimination effect is completed, using the difference of this output power as the error of frequency discrimination
Signal, then control by servo-control system that laser chamber is long to be tuned with the wavelength to laser, theoretically frequency stabilization
Degree is up to 10-11~10-13Magnitude, repdocutbility also at least can reach 10-11Magnitude can meet contemporary optics scientific research well and want
It asks.As shown in Fig. 2, left-right rotary optical output power is equal, and photelectric receiver receives directly if laser frequency is equal to centre frequency
Signal, the output of electronic servo no signal are flowed, laser frequency remains unchanged, and if external disturbance is greater than its frequency in calibration
The wavelength of frequency of heart, it is flexible long with buncher by output negative current signal control piezoelectric ceramics, less than calibration centre frequency
When wavelength, similarly, output positive current signal control piezoelectric ceramics is flexible long with buncher, thus modulation wavelength extremely calibration center frequency
At rate.
The basic principle of the utility model, main feature and advantage has been shown and described above, it is practical new not departing from this
Under the premise of type spirit and scope, there are also various changes and modifications, these changes and improvements both fall within requirement and protect the utility model
The scope of the utility model of shield.
Claims (1)
1. a kind of new laser frequency regulator based on Zeemen effect, it is characterised in that：It is successively arranged along light transmission direction
The slide of He-Ne laser, optoisolator, λ/4 and polarization splitting prism, wherein He-Ne laser is set to the magnetic being made of coil
In, a branch of left-handed rotation and a branch of right-handed rotation, polarization spectro rib are split into for realizing the line polarisation for being emitted He-Ne laser
A branch of light splitting of mirror is incident to balanced detector, and another beam light splitting of polarization splitting prism is incident to balance through 45 ° of semi-reflective mirrors and visits
Device is surveyed, phase sensitive detection module passes through route respectively and is connected with He-Ne laser, balanced detector and oscillograph.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820861576.0U CN208173999U (en) | 2018-06-05 | 2018-06-05 | A kind of new laser frequency regulator based on Zeemen effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820861576.0U CN208173999U (en) | 2018-06-05 | 2018-06-05 | A kind of new laser frequency regulator based on Zeemen effect |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208173999U true CN208173999U (en) | 2018-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820861576.0U Expired - Fee Related CN208173999U (en) | 2018-06-05 | 2018-06-05 | A kind of new laser frequency regulator based on Zeemen effect |
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| CN (1) | CN208173999U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108649421A (en) * | 2018-06-05 | 2018-10-12 | 河南师范大学 | New laser frequency regulator based on Zeemen effect |
-
2018
- 2018-06-05 CN CN201820861576.0U patent/CN208173999U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108649421A (en) * | 2018-06-05 | 2018-10-12 | 河南师范大学 | New laser frequency regulator based on Zeemen effect |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181130 Termination date: 20190605 |
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| CF01 | Termination of patent right due to non-payment of annual fee |