CN87210362U - New-type optical diode - Google Patents
New-type optical diode Download PDFInfo
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- CN87210362U CN87210362U CN 87210362 CN87210362U CN87210362U CN 87210362 U CN87210362 U CN 87210362U CN 87210362 CN87210362 CN 87210362 CN 87210362 U CN87210362 U CN 87210362U CN 87210362 U CN87210362 U CN 87210362U
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- new
- type optical
- optical diode
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- 230000003287 optical effect Effects 0.000 title claims abstract description 31
- 239000010453 quartz Substances 0.000 claims abstract description 13
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000011521 glass Substances 0.000 claims abstract description 6
- 229910001172 neodymium magnet Inorganic materials 0.000 claims abstract description 3
- 238000003475 lamination Methods 0.000 claims description 5
- 230000007246 mechanism Effects 0.000 claims description 4
- 239000000696 magnetic material Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 5
- 239000002131 composite material Substances 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 3
- 229910000938 samarium–cobalt magnet Inorganic materials 0.000 abstract description 2
- 239000000853 adhesive Substances 0.000 abstract 2
- 230000001070 adhesive effect Effects 0.000 abstract 2
- 230000007423 decrease Effects 0.000 abstract 1
- 230000002349 favourable effect Effects 0.000 abstract 1
- 230000010356 wave oscillation Effects 0.000 abstract 1
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 7
- 235000017491 Bambusa tulda Nutrition 0.000 description 7
- 241001330002 Bambuseae Species 0.000 description 7
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 7
- 239000011425 bamboo Substances 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000010287 polarization Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000003292 glue Substances 0.000 description 2
- 101100366060 Caenorhabditis elegans snap-29 gene Proteins 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- IWXPCCAXTRYLNL-UHFFFAOYSA-N [Tb+3].[O-]B([O-])[O-] Chemical compound [Tb+3].[O-]B([O-])[O-] IWXPCCAXTRYLNL-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 201000009310 astigmatism Diseases 0.000 description 1
- 239000005385 borate glass Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- KPLQYGBQNPPQGA-UHFFFAOYSA-N cobalt samarium Chemical compound [Co].[Sm] KPLQYGBQNPPQGA-UHFFFAOYSA-N 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 229910001004 magnetic alloy Inorganic materials 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- KNVAYBMMCPLDOZ-UHFFFAOYSA-N propan-2-yl 12-hydroxyoctadecanoate Chemical compound CCCCCCC(O)CCCCCCCCCCC(=O)OC(C)C KNVAYBMMCPLDOZ-UHFFFAOYSA-N 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
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Abstract
The utility model discloses a new-type optical diode, which is mainly used in an annular chamber laser. The new-type optical diode is a key device to realize one-way travelling wave oscillation. The thin quartz plate with difficult technique of the utility model is replaced by a structure with small angle of rotation obtained by the subtraction of new-type optical diodea left hand quartz plate and a right hand quartz plate. The optically active form is an adhesive structure of composite layers (left hand quartz | faraday glass | right hand quartz). The adhesive structure of composite layers enhances the optical and mechanical property of the new-type optical device evidently. A permanent-magnetic clamp made of NdFeB material replacing SmCo material reduces cost and decreases the volume of the device. The new-type optical diode is favorable for the performance improvement of the annular chamber laser. The cost of the new-type optical diode is equal to 1/10-1/15 of the cost of device with same function made in US.
Description
This utility model belongs to laser new unit technical field.
Optical diode is the optical-unidirectional device again.Its key property is to present unequal optical impedance for forward and the reverse light wave that passes through.Being mainly used in the ring laser resonant cavity, is to make ring laser realize the Primary Component of stable unidirectional traveling wave running.
The operation principle of the optical diode of existing type be utilize the magnetic rotation of material (faraday) effect nonreciprocity with natural-optical rotation effect (optical activity) but reciprocity superposition mutually.Requirement disappears mutually along two kinds of rotation effects of forward (magnetic field coordinate) of device, thereby does not change the polarization direction of direct wave.And it is very low to insert loss; Along device oppositely then is that two kinds of rotation effects are long mutually.When light beam oppositely passed device at every turn, plane of polarization was turned over a suitable angle.With respect to the intrinsic polarization direction of loop laser resonance cavity, the angle of rotation of this addition can cause the loss that is enough to suppress the returning wave vibration.Thereby make laser energy (because mode competition) stably concentrate on single capable ripple direction.
The visible light wave range optical diode has United States Patent (USP) two kinds of (1), (2) and China's reports (3) at present:
（1）United States Patent 4，194，168 Mar，18，1980 Unidirectional Ring Laser Apparatus and Method
（2）Design and Performance of a Broad－Band Optical Diod to Enforce One－Direction Traveling－Wave Operation of a Ring Laser
IEEE J.Q.E，Vol.QE－16，No.4，Apr.1980，9483－
(3) 801D type active frequency stabilization continuous wave tunable dye laser development report
Changchun Inst. of Optics and Fine Mechanics, Chinese Academy of Sciences in September, 1986
The optical diode that is used for the annular chamber dye laser at present is above-mentioned United States Patent (USP) (1), (2).Their major defect be because device contain free only 0.1mm thickness the high optics quality directed quartzy thin slice and technology difficulty is very big.Rate of finished products is very low, and cost is very high.Wherein a kind of, light beam normal incidence, (Fig. 1-a) is so that forward inserts loss is bigger to experience four optical surfaces; Another kind of light beam is with a Brewster's angle process farad mat woven of fine bamboo strips optically-active medium.It is less that forward inserts loss, but device volume is huge, and device is inserted or shifted out light path and causes the traversing (Fig. 1-b) of light beam.The adjusting of laser cavity is very inconvenient.
The purpose of this utility model provides a kind of construction and device of new optical diode.Overcome the above-mentioned shortcoming of existing device.Further improve the performance of optical-unidirectional device.Simplify technology difficulty significantly, reduce manufacturing cost.
Structure of the present utility model as shown in Figure 2, the main points of invention are as follows:
(1) gives up the free element (referring to Fig. 1) of the thick directed quartzy thin slice of the great 0.1mm of technology difficulty.The desired about 3 ° natural-optical rotation angle of optical diode changes by two suitable same Z of the simple thickness of technology and realizes to the thickness difference of the left-handed of orientation and right-handed quartz sheet.Select manufacturing process routinely easily to realize the wafer thickness t of high optical quality, only control left-handed in the grinding and the thickness difference dextrorotation wafer, make t
Right-t
A left side=0.1mm.
(2) farad terbium borate glass that mat woven of fine bamboo strips optically-active medium is produced with Japanese Hoya FR-5 rotation glass or Tianjin silicate.Thick about 2mm, normal incidence work.But be not free the placement, but the left-handed right-handed quartz sheet described in (1) is bonding, forms a kind of (dextrorotation of left-handed farad mat woven of fine bamboo strips glass) type lamination layer structure (2-1 among Fig. 2).Matching optics glue glued adhesion with special development.All optical element is bonded into one and has not only improved the mechanical property of device, and because free optical surface reduces half than existing device, because optical match, residual reflection loss on the glue interface and passband width are far superior to present device and rely on the plating level that anti-reflection film reached.
(3) with new cheap and have more the nd-fe-b permanent magnetic alloy of high energy product and replace the expensive samarium cobalt permanent magnet alloy that uses in the United States Patent (USP) and make the desired permanent magnetic field of farad mat woven of fine bamboo strips optically-active.Utilize a kind of reversed polarity cascaded structure (2-2 among Fig. 2) further to improve the magnetic field intensity (H of working region
2≈ 0.35T) and radially uniformity.And retaining shaft is to the inhomogeneities of field intensity.
(4) a kind of axial micro-adjusting mechanism (2-3 among Fig. 2) makes as (2) described composite stratotype optically active form and can finely tune as the axial location in (3) described magnetic field.Promptly by a fine setting farad mat woven of fine bamboo strips angle of rotation, with fine compensation because foozle or because the farad mat woven of fine bamboo strips angle of rotation Q that the difference of two media rotatory dispersive causes
FWith natural-optical rotation angle Q
NBetween deviation.Thereby guarantee to reach Q at whole service band
N-Q
F=0 °, make device have minimum forward to insert loss.
The utility model has the advantages that: the manufacturing technology difficulty of optical diode is reduced significantly.With the United States Patent (USP) ratio, the technology difficulty coefficient is about 1:10.Thereby domestic general optical instrument factory or laboratory can both be made.
In the lamination layer structure optically active form of compactness, replace anti-reflection deielectric-coating with the optics gummed, make residual reflection dwindle 5 times.A nearly step has been improved the forward transmitance of device.
In the lamination layer structure optically active form of compactness, be wrapped in the poor slightly Faraday rotation glass of chemical stability with physical property and the fabulous quartz plate of chemical stability, do not contain tender and musical parts in the entire device.Thereby the mechanical stability and the chemical stability of optical diode have been improved.Durable, easy care.
Because the design and the manufacture method of the optical diode of this novel proposition.Make optical diode further microminiaturized.Outside dimension of the present utility model is φ 28 * L28 millimeter.Volume than United States Patent (USP) device is little 2-4 times.Be used in the loop laser resonance cavity of 8 fonts, help further compressing the folding angle of resonant cavity.Reduce astigmatism, reduce threshold value.Improve the laser output mode.
Scheme that the utility model provides and method have improved the rate of finished products that optical diode is produced greatly, have reduced cost.Small lot is made, and cost is no more than
500 yuan, be about 1/15th of american goods import price.
The embodiment of this utility model sees accompanying drawing 2 and explanation thereof.
The Figure of description explanation:
Figure (1-a) and (1-b) United States Patent (USP) optical-unidirectional device structural representation
The structural representation of Fig. 2 novel optical diode
2-1 (the left-handed quartz sheet | farad mat woven of fine bamboo strips rotation glass | the right-handed quartz sheet) the lamination layer structure optically active form
2-2 NdFeB permanent-magnetic clamp
The axial micro-adjusting mechanism of 2-3
Claims (1)
1, a kind of optical diode is characterized in that being made up of the optically active form, permanent-magnetic clamp and the micro-adjusting mechanism that are bonded into (left-handed quartz | Faraday glass | right-handed quartz) lamination layer structure, and:
1. replace the Z of 0.1 millimeters thick to the quartzy thin slice of orientation with two suitable same Z of thickness to the thickness difference of the left-handed of orientation and right-handed quartz sheet;
2. permanent magnet adopts the NdFeB magnetic material and is the reversed polarity cascaded structure;
Optically active form have along magnetic field axis to the differential type micro-adjusting mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87210362 CN87210362U (en) | 1987-07-25 | 1987-07-25 | New-type optical diode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87210362 CN87210362U (en) | 1987-07-25 | 1987-07-25 | New-type optical diode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN87210362U true CN87210362U (en) | 1988-10-12 |
Family
ID=4825296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87210362 Withdrawn CN87210362U (en) | 1987-07-25 | 1987-07-25 | New-type optical diode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN87210362U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102902014A (en) * | 2011-04-29 | 2013-01-30 | 中国科学院西安光学精密机械研究所 | Optoisolator |
-
1987
- 1987-07-25 CN CN 87210362 patent/CN87210362U/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102902014A (en) * | 2011-04-29 | 2013-01-30 | 中国科学院西安光学精密机械研究所 | Optoisolator |
| CN102902014B (en) * | 2011-04-29 | 2014-07-02 | 中国科学院西安光学精密机械研究所 | Optoisolator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |