CN106019617B - A kind of optically isolated beam merging apparatus - Google Patents
A kind of optically isolated beam merging apparatus Download PDFInfo
- Publication number
- CN106019617B CN106019617B CN201610600819.0A CN201610600819A CN106019617B CN 106019617 B CN106019617 B CN 106019617B CN 201610600819 A CN201610600819 A CN 201610600819A CN 106019617 B CN106019617 B CN 106019617B
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- Prior art keywords
- wave plate
- light
- half wave
- polarizing film
- horizontal polarization
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/28—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising
- G02B27/283—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising used for beam splitting or combining
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/28—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising
- G02B27/288—Filters employing polarising elements, e.g. Lyot or Solc filters
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
Abstract
The present invention provides a kind of optically isolated beam merging apparatus, the program includes the first half wave plate, the first polarizing film, the first Faraday rotator, the second half wave plate, the first high reflective mirror, third half wave plate, the second Faraday rotator, the 4th half wave plate, the second high reflective mirror and the second polarizing film；Laser light source is divided into two beam orhtogonal linear polarizaiton light through the first half wave plate and the first polarizing film；Horizontal polarization light is still horizontal polarization light after the first Faraday rotator and the second half wave plate；Orthogonal polarized light is converted into horizontal polarization light after the first high reflective mirror and third half wave plate, and orthogonal polarized light is converted to again after being then passed through the second Faraday rotator and the 4th half wave plate；Coaxial Superimposed closes beam to orthogonal polarized light at the second polarizing film with horizontal polarization light after the reflection of the second high reflective mirror.
Description
Technical field
The present invention relates to laser technology field, especially a kind of optically isolated beam merging apparatus.
Background technology
Bulk of optical feedback influences contemporary optics system such as laser frequency stabilizing system, laser amplifier system etc. huge.It can be caused
Frequency drift, amplitude fluctuation, the bandwidth of laser frequency stabilizing system are broadening, noise increases, while to the seed source of laser amplifier system
Power and beam quality cause prodigious interference even to damage.Currently, the most common method for eliminating bulk of optical feedback is application method
Magneto optic isolator is drawn, it can effectively completely cut off the light echo light beam of reverse transfer.
However, with the development of laser technology, it is higher and higher to laser light source light echo insulation request.Both it required under high power
Meet high isolation, while requiring that isolator insertion loss is small, fuel factor is low, does not influence beam quality.And single faraday
Magneto optic isolator can only realize linearly polarized laser light source and be effectively isolated, and how realize having for high power random polarization laser light source
Effect light echo isolation has important application value.
Therefore, currently there is an urgent need to a kind of solutions for the effective light echo isolation disclosure satisfy that high power random polarization laser light source
Certainly scheme.
Invention content
The purpose of the present invention aiming at deficiency of the prior art, and provides a kind of optically isolated beam merging apparatus, should
Scheme device can realize effective light echo isolation of high power random polarization laser light source.
This programme is achieved by the following technical measures：
A kind of optically isolated beam merging apparatus includes the first half wave plate（1）, the first polarizing film（2）, the first faraday
Circulator（3）, the second half wave plate（4）, the first high reflective mirror（5）, third half wave plate（6）, the second faraday rotation
Turn device（7）, the 4th half wave plate（8）, the second high reflective mirror（9）With the second polarizing film（10）；Laser light source is through the one or two point
One of wave plate（1）With the first polarizing film（2）It is divided into two beam orhtogonal linear polarizaiton light；Horizontal polarization light is through the first Faraday rotator
（3）With the second half wave plate（4）It is still horizontal polarization light afterwards；Orthogonal polarized light is through the first high reflective mirror（5）With the three or two
/ mono- wave plate（6）After be converted into horizontal polarization light, be then passed through the second Faraday rotator（7）With the 4th half wave plate
（8）Be converted to orthogonal polarized light again afterwards；Orthogonal polarized light is through the second high reflective mirror（9）It is inclined second with horizontal polarization light after reflection
The Coaxial Superimposed at piece (10) that shakes closes beam.
As the preferred of this programme：First half wave plate（1）For changing the polarization characteristic of laser light source, to adjust
Section is through the first polarizing film（2）The power ratio of two beam orhtogonal linear polarizaiton light after polarization beam splitting.
As the preferred of this programme：First, second Faraday rotator（3,7）For horizontal polarization polarization state to be rotated
45°。
As the preferred of this programme：Second half wave plate（4）For will be through the first Faraday rotator（3）Polarization state
The horizontal polarization light of 45 ° of rotation is converted to horizontal polarization light again.
As the preferred of this programme：First and second high reflective mirror（5,9）For average mirror, and it is coated with corresponding laser light source wave band
High-reflecting film.
As the preferred of this programme：Third half wave plate（6）For orthogonal polarized light to be converted into horizontal polarization light.
As the preferred of this programme：4th half wave plate（8）For will be through the second Faraday rotator（7）Polarization state
The orthogonal polarized light of 45 ° of rotation is converted to orthogonal polarized light again.
As the preferred of this programme：Orthogonal polarized light is through the second high reflective mirror（9）After reflection and horizontal polarization light second
Coaxial Superimposed closes beam at polarizing film (10).
As the preferred of this programme：Second polarizing film (10) is used to two beam orhtogonal linear polarizaiton light polarization closing beam to swash at a branch of
Light.
As the preferred of this programme：First polarizing film（2）For by laser light source polarization beam splitting at two beam orhtogonal linear polarizaitons
Light.
The advantageous effect of this programme can according to the description of the above program, due to being used in this scenario by laser beam
After beam splitting, then by closing beam output, it can be achieved that effective light echo of high power random polarization laser light source is isolated, to random polarization time
Light plays buffer action, protects laser light source.
It can be seen that compared with prior art, the present invention having substantive features and progress, the advantageous effect implemented
It is obvious.
Description of the drawings
Fig. 1 is the structural schematic diagram of the specific embodiment of the invention 1.
Fig. 2 is the structural schematic diagram of the specific embodiment of the invention 2.
Specific implementation mode
All features disclosed in this specification or disclosed all methods or in the process the step of, in addition to mutually exclusive
Feature and/or step other than, can combine in any way.
This specification（Including any accessory claim, abstract and attached drawing）Disclosed in any feature, except non-specifically chatting
It states, can be replaced by other alternative features that are equivalent or have similar purpose.That is, unless specifically stated, each feature is only
It is an example in a series of equivalent or similar characteristics.
As shown in Figure 1, 2, the present embodiment provides a kind of optically isolated beam merging apparatus, which includes the one or two
/ mono- wave plate（1）, the first polarizing film（2）, the first Faraday rotator（3）, the second half wave plate（4）, it is first high anti-
Mirror（5）, third half wave plate（6）, the second Faraday rotator（7）, the 4th half wave plate（8）, the second high reflective mirror
（9）With the second polarizing film（10）；Laser light source is through the first half wave plate（1）With the first polarizing film（2）It is orthogonal to be divided into two beams
Linearly polarized light；Horizontal polarization light is through the first Faraday rotator（3）With the second half wave plate（4）It is still horizontal polarization afterwards
Light；Orthogonal polarized light is through the first high reflective mirror（5）With third half wave plate（6）After be converted into horizontal polarization light, be then passed through
Second Faraday rotator（7）With the 4th half wave plate（8）Be converted to orthogonal polarized light again afterwards；Orthogonal polarized light is through
Two high reflective mirrors（9）Coaxial Superimposed closes beam at the second polarizing film (10) with horizontal polarization light after reflection.
In embodiment 1, as shown in Figure 1, first and second polarizing film（2,10）For quartz polarization piece, incident angle is about
56°；First and second high reflective mirror（5,9）It is coated with the high-reflecting film of corresponding laser light source wave band, about 34 ° of incident angle；Entirely
Light path is figure of eight structure.
In embodiment 2, as shown in Fig. 2, first and second polarizing film（2,10）For 45 ° of polarizing films, incident angle is about
45°；First and second high reflective mirror（5,9）It is coated with the high-reflecting film of corresponding laser light source wave band, about 45 ° of incident angle；Entirely
Light path is " mouth " character form structure.
The invention is not limited in specific implementation modes above-mentioned.The present invention, which expands to, any in the present specification to be disclosed
New feature or any new combination, and disclose any new method or process the step of or any new combination.
Claims (7)
1. a kind of optically isolated beam merging apparatus, it is characterized in that：It include the first half wave plate（1）, the first polarizing film（2）,
One Faraday rotator（3）, the second half wave plate（4）, the first high reflective mirror（5）, third half wave plate（6）, second
Faraday rotator（7）, the 4th half wave plate（8）, the second high reflective mirror（9）With the second polarizing film（10）；Laser light source passes through
First half wave plate（1）With the first polarizing film（2）It is divided into two beam orhtogonal linear polarizaiton light；Horizontal polarization light is through the first faraday
Circulator（3）With the second half wave plate（4）It is still horizontal polarization light afterwards；Orthogonal polarized light is through the first high reflective mirror（5）With
Third half wave plate（6）After be converted into horizontal polarization light, be then passed through the second Faraday rotator（7）With the four or two/
One wave plate（8）Be converted to orthogonal polarized light again afterwards；Orthogonal polarized light is through the second high reflective mirror（9）Exist with horizontal polarization light after reflection
Coaxial Superimposed closes beam at second polarizing film (10)；The third half wave plate（6）For orthogonal polarized light to be converted into water
Flat polarised light；The 4th half wave plate（8）For will be through the second Faraday rotator（7）Polarization state rotates 45 ° of water
Flat polarised light is converted to orthogonal polarized light again；The first half wave plate（1）It is special for changing the polarization of laser light source
Property, to adjust through the first polarizing film（2）The power ratio of two beam orhtogonal linear polarizaiton light after polarization beam splitting.
2. a kind of optically isolated beam merging apparatus according to claim 1, it is characterized in that：The first, second faraday rotation
Turn device（3,7）For horizontal polarization polarization state to be rotated 45 °.
3. a kind of optically isolated beam merging apparatus according to claim 1, it is characterized in that：The second half wave plate
（4）For will be through the first Faraday rotator（3）The horizontal polarization light that polarization state rotates 45 ° is converted to horizontal polarization light again.
4. a kind of optically isolated beam merging apparatus according to claim 1, it is characterized in that：First and second high reflective mirror（5,9）
For average mirror, and it is coated with the high-reflecting film of corresponding laser light source wave band.
5. a kind of optically isolated beam merging apparatus according to claim 1, it is characterized in that：The orthogonal polarized light is high through second
Anti- mirror（9）After reflection and horizontal polarization light at the second polarizing film (10) Coaxial Superimposed close beam.
6. a kind of optically isolated beam merging apparatus according to claim 1, it is characterized in that：Second polarizing film (10) is used for
Two beam orhtogonal linear polarizaiton light polarization are closed into beam into beam of laser.
7. a kind of optically isolated beam merging apparatus according to claim 1, it is characterized in that：First polarizing film（2）For
By laser light source polarization beam splitting at two beam orhtogonal linear polarizaiton light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610600819.0A CN106019617B (en) | 2016-07-28 | 2016-07-28 | A kind of optically isolated beam merging apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610600819.0A CN106019617B (en) | 2016-07-28 | 2016-07-28 | A kind of optically isolated beam merging apparatus |
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| Publication Number | Publication Date |
|---|---|
| CN106019617A CN106019617A (en) | 2016-10-12 |
| CN106019617B true CN106019617B (en) | 2018-11-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610600819.0A Active CN106019617B (en) | 2016-07-28 | 2016-07-28 | A kind of optically isolated beam merging apparatus |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112630879B (en) * | 2020-12-25 | 2022-09-30 | 中国工程物理研究院激光聚变研究中心 | Phase delay element and phase delay device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993020475A1 (en) * | 1992-04-03 | 1993-10-14 | Australian And Overseas Telecommunications Corporation Limited | Improvements to optical phase shifting |
| US6101026A (en) * | 1998-01-27 | 2000-08-08 | Agilent Technologies, Inc. | Reversible amplifier for optical networks |
| CN104931954A (en) * | 2015-06-02 | 2015-09-23 | 湖北捷讯光电有限公司 | Optical path design method for coaxial receiving and transmitting ends of laser range finder |
| CN105629386A (en) * | 2014-11-07 | 2016-06-01 | 深圳新飞通光电子技术有限公司 | Optical isolator |
| CN205880391U (en) * | 2016-07-28 | 2017-01-11 | 中国工程物理研究院应用电子学研究所 | Beam combining device is kept apart to light |
-
2016
- 2016-07-28 CN CN201610600819.0A patent/CN106019617B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993020475A1 (en) * | 1992-04-03 | 1993-10-14 | Australian And Overseas Telecommunications Corporation Limited | Improvements to optical phase shifting |
| US6101026A (en) * | 1998-01-27 | 2000-08-08 | Agilent Technologies, Inc. | Reversible amplifier for optical networks |
| CN105629386A (en) * | 2014-11-07 | 2016-06-01 | 深圳新飞通光电子技术有限公司 | Optical isolator |
| CN104931954A (en) * | 2015-06-02 | 2015-09-23 | 湖北捷讯光电有限公司 | Optical path design method for coaxial receiving and transmitting ends of laser range finder |
| CN205880391U (en) * | 2016-07-28 | 2017-01-11 | 中国工程物理研究院应用电子学研究所 | Beam combining device is kept apart to light |
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| CN106019617A (en) | 2016-10-12 |
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