CN108155551A - A kind of device of output vector polarised light - Google Patents
A kind of device of output vector polarised light Download PDFInfo
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- CN108155551A CN108155551A CN201810147720.9A CN201810147720A CN108155551A CN 108155551 A CN108155551 A CN 108155551A CN 201810147720 A CN201810147720 A CN 201810147720A CN 108155551 A CN108155551 A CN 108155551A
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- polarised light
- polarized light
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- 238000005086 pumping Methods 0.000 claims abstract description 12
- 230000003287 optical effect Effects 0.000 claims abstract description 11
- 229910017502 Nd:YVO4 Inorganic materials 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 230000010287 polarization Effects 0.000 description 30
- 230000005684 electric field Effects 0.000 description 11
- 239000011248 coating agent Substances 0.000 description 9
- 238000000576 coating method Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000002184 metal Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 238000005520 cutting process Methods 0.000 description 4
- 238000012546 transfer Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000013307 optical fiber Substances 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000011982 device technology Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 230000001965 increasing effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 238000012576 optical tweezer Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/10061—Polarization control
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Lasers (AREA)
Abstract
The present invention discloses a kind of device of output vector polarised light, including the linearly polarized light output laser with optical axis set successively from left to right and radial polarisation converter, the linearly polarized light of linearly polarized light output laser output passes through radial polarisation converter output vector polarised light；Linearly polarized light output laser includes the pumping source with optical axis set successively from left to right, collimation focusing system, input mirror, gain media and outgoing mirror, rational in infrastructure, at low cost, high conversion efficiency,, it can be achieved that wide wave-length coverage is polarized, no specific wavelength requires for non-division splicing.
Description
Technical field
The present invention relates to field of laser device technology, and in particular to a kind of device of output vector polarised light.
Background technology
Laser since the advent of the world plays increasing effect in industrial circle.Laser is as transverse electro-magnetic wave, electric field
Vector is in the plane vertical with its direction of propagation always, and polarizes one of feature most basic as electromagnetic wave, is by electricity
Field vector characterization.The vibration of electric field intensity in principal plane has various states.It can be with according to the uniformity of vibrational state
Laser is divided into even polarization light and non-uniform polarisation light.Even polarization light include usually said linearly polarized light, circularly polarized light,
Elliptically polarized light, natural light and partial poolarized light.Non-uniform polarisation light is radial polarisation light and angularly polarized light.Nearest research
It was found that electric vector with axisymmetric polarised light in terms of physics and material processing with irreplaceable advantage, thus at present
By the extensive concern of domestic and foreign scholars.Radial polarisation light and angularly polarized light just have the axisymmetric characteristic of electric vector.
Radial polarisation light has perfect light beam axial symmetry so that it have with linearly polarized light and circularly polarized light compared with it is many it is notable not
The characteristics of same.For example, radial polarisation light has along the symmetrical electric field distribution of optical axis and hollow circular ring type beam arrangement, brilliance
Beam characteristics；Radial polarisation light and angularly polarized light are all eigenstate of polarization, when they are propagated in the tangential crystal of c, no
The phenomenon that electric field intensity crosstalk can occur, and even polarization light, then without this property, radial polarisation light is in high-NA
Under lens focus, the minimum focal beam spot for surmounting diffraction limit can be generated, than linearly polarized light and the focal beam spot of circularly polarized light
Better quality；In terms of intermetallic composite coating, the Metal Cutting efficiency using radial polarisation light is twice of circularly polarized light efficiency.It is another
Aspect, radial polarisation light have following characteristic for angularly polarized light:Radial polarisation light passes through lens focusing system
Afterwards, single minimum focal beam spot can be formed in far field, and angularly polarized light then forms multiple focal beam spots；In Metal Cutting
In, since radial polarisation light is the polarised light of p-component always, direction is parallel to metal surface, therefore its angle factor always
Cutting process will not be had an impact；In metal drilling, radial polarisation light is compared with angularly polarized light, and borehole shape is evenly
Drilling depth is deeper.In recent years, these characteristics of radial polarisation light have obtained many new applications, such as are capturing and manipulating gold
Belong to particle, Metal Cutting, improve microscopical resolution ratio, improve storage density, development of new interferometer etc..With people
It deepens continuously to radial polarisation light research, its some new features will be found, so as to be obtained in more and more fields
To being more widely applied.
At present, the generation of radial polarisation light can be divided into intracavitary method and the method outside chamber.Intracavitary method is by humorous in laser
Optical element of intracavitary of the shaking setting with polarization selectivity directly generates axially symmetry polarization light beam, can generate metastable diameter
To/angularly polarized light, the outer method of chamber is that resonator external conversion is realized.But existing polarised light output laser mostly there are volume compared with
Greatly, damage performance is poor, can not carry high power, and transfer efficiency is low, expensive, it is difficult to promote.
Invention content
The purpose of the present invention is to provide a kind of device of output vector polarised light, in the presence of solving the prior art
Volume is larger, and damage performance is poor, can not carry high power, and transfer efficiency is low, expensive, it is difficult to promote.
To achieve the above object, the method for the present invention provides a kind of device of output vector polarised light, and the output vector is inclined
The device of light of shaking includes the linearly polarized light output laser that with optical axis sets successively from left to right and radial polarisation converter, line
The linearly polarized light of polarised light output laser output passes through radial polarisation converter output vector polarised light；Linearly polarized light output swashs
Light device includes the pumping source with optical axis set successively from left to right, collimation focusing system, input mirror, gain media and output
Mirror.
Optionally, pumping source is the pumping source that output light wavelength is nm.
Optionally, the input face coating structure for inputting mirror is S:AR@nm.
Optionally, the output face coating structure for inputting mirror is S：AR@nm、HR@nm.
Optionally, gain media Nd:YVO.
Optionally, the input face coating structure of outgoing mirror is S:T=%@nm.
Optionally, the output face coating structure of outgoing mirror is S:AR@nm.
Optionally, there are one the half-wave plates and a prism of nm for the setting of outgoing mirror rear.
Optionally, collimation focusing system includes convex lens.
Optionally, collimation focusing system includes two convex lenses.
The invention has the advantages that：
The device of the output vector polarised light of the present invention, the volume that can be solved in the presence of the prior art is larger, damage
Poor-performing can not carry high power, and transfer efficiency is low, expensive, it is difficult to promote, the good beam quality of output light, diameter
To polarization purity height, rational in infrastructure, at low cost, high conversion efficiency, non-division splicing is, it can be achieved that wide wave-length coverage is polarized, nothing
Specific wavelength requirement.
Description of the drawings
Fig. 1 is the structure diagram of the device of the output vector polarised light of the present invention.
Fig. 2 is the concrete structure schematic diagram of the device of the output vector polarised light of the present invention.
Fig. 3 is the radial polarisation light schematic diagram of the device of the output vector polarised light of the present invention.
Fig. 4 is the angularly polarized light schematic diagram of the device of the output vector polarised light of the present invention.
Fig. 5 is the radial polarisation converter structure schematic diagram of the device of the output vector polarised light of the present invention
Fig. 6 is the principle schematic of the generation radial polarisation light of the device of the output vector polarised light of the present invention.
Fig. 7 is the principle schematic of the generation angularly polarized light of the device of the output vector polarised light of the present invention.
Outputting radial, angular vector polarized light laser while Fig. 8 is the device of the output vector polarised light of the present invention
Structure diagram.
In figure, 1 is linearly polarized light output laser, and 2 be radial polarisation converter, and 3 be linearly polarized light, and 4 polarize for vector
Light, 5 be pumping source, and 6 be collimation focusing system, and 7 be input mirror, and 8 be gain media, and 9 be outgoing mirror, and 10 be half-wave plate, and 11 are
Prism, 12 be orthogonal polarized light, and 13 be horizontal polarization light.
Specific embodiment
The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention..
Embodiment
A kind of device of output vector polarised light, referring to Fig. 1 to Fig. 7, the device of the output vector polarised light include by
The linearly polarized light output laser 1 and radial polarisation converter 2 that left-to-right with optical axis is set successively, linearly polarized light output laser
The linearly polarized light 3 that device 1 exports is by 2 output vector polarised light 4 of radial polarisation converter；Linearly polarized light output laser 1 includes
Pumping source 5, collimation focusing system 6, input mirror 7, gain media 8 and the outgoing mirror 9 with optical axis set successively from left to right.
As it can be seen that the device of the output vector polarised light of the present embodiment, linearly polarized light output laser 1 may be used directly defeated
Go out the laser of linearly polarized light, the laser for exporting non-line polarisation can also be used to add a polarizer, output is become into linear polarization
Light 3.The vector polarization generating means based on micro-nano device may be used in radial polarisation converter 2, and radial polarisation converter 2 can be with
Using the micro-nano structure device made based on femtosecond direct writing technology.Using radial polarisation converter 2 can with characteristic by linear polarization
1 polarization light output of light output laser is converted to required vector polarised light 4.
The device of the output vector polarised light of the present invention, can also include such as lower structure, pumping source 5 is for output light wavelength
The pumping source of 808nm.The input face coating structure for inputting mirror 7 is S1:AR@808nm.Input mirror 7 output face coating structure be
S2：AR@808nm、HR@1064nm.Gain media 8 is Nd:YVO4.The input face coating structure of outgoing mirror 9 is S1:T=40%@
1064nm.The output face coating structure of outgoing mirror 9 is S2:AR@1064nm.Due to Nd:YVO4, anisotropy, pumping source 5, standard
Straight focusing system 6, input mirror 7, gain media 8 and outgoing mirror 9 form linearly polarized light output laser 1, polarization light output
By 2 output vector polarised light 4 of radial polarisation converter.
Preferably, collimation focusing system 6 includes convex lens.
Preferably, collimation focusing system 6 includes two convex lenses.
The device of the output vector polarised light of the present invention can also include such as lower structure, and there are one the settings of 9 rear of outgoing mirror
The half-wave plate 10 of 1064nm and a prism 11.In this way, 1 polarization light output 3 of linearly polarized light laser first pass through one to
The half-wave plate 10 of 1064nm, the half-wave plate 10 can change the polarization direction of linearly polarized light 3, then by a prism 11, rib
Mirror 11 plays light splitting, which all penetrates orthogonal polarized light 12, and horizontal polarization light 13 is all reflected.It is specific logical
Cross the optical axis direction of rotatable halfwave plate 10 control change be incident to prism 11 light beam polarization direction, and then control prism 11
Transmission and the light beam ratio of reflection are passed through respectively from 13 beam of horizontal polarization light of 11 transmissive Homeotropic polarised light 12 of prism and reflection
One radial polarisation converter 2, is converted to radial polarisation light and angularly polarized light, it is achieved thereby that simultaneously outputting radial,
Angular vector polarised light, and radial direction, the ratio of angular vector polarised light can control.Under linearly polarized light output laser 1
Face is provided with support platform, and support platform is internally provided with support chamber, supports and is provided with spiral groove on cavity wall.Helical form
At least two reinforcing mats are evenly distributedly connected between the inner wall of slot.The edge of reinforcing mat is provided with screen frame.Outside screen frame
Portion is arranged with damped ring.Damped ring is in contact with the inner wall of spiral groove.Be connected between adjacent screen frame it is equally distributed extremely
Few two springs.
The device of the output vector polarised light of the present invention, linearly polarized light output laser 1 can be the 808nm of concrete structure
The 1064nm lasers generated are pumped, can also be various solid state lasers, various semiconductor lasers, various optical fiber lasers
The linearly polarized laser device of structure.
The device of the output vector polarised light of the present invention generates radial direction/angularly polarized light using method outside the chamber for being.
Radial polarisation light can be defined as follows：So-called radial polarisation light refers to electric vector vibration direction in beam cross-section
It is upper that there is axial symmetry characteristic and always a kind of polarised light radially.It defines the expression formula derived from electric field strength, in electric field
The electric vector of every is ψ relative to radius vector rotation angle, then its electric field strength is represented by：E (r, θ)=E0(r)[rcosψ+θ
sinψ]；
R, θ in formula, unit vector respectively radially and angularly.As ψ=0, electric field strength be represented by E (r, θ)=
E0(r) r, axially symmetry polarization light beam are radial polarisation lights, and electric field vector is parallel to radial direction always, as shown in Figure 3；When
During ψ=pi/2, electric field strength is represented by E (r, θ)=E0(r) θ sin ψs, axially symmetry polarization light beam are angularly polarized lights, electric-field strength
Vector is spent always perpendicular to radial direction, as shown in Figure 4.
The device of the output vector polarised light of the present invention, by the way that radial polarisation converter 2 is placed in outside chamber, in Solid State Laser
High radial polarization purity, the tune Q of high-peak power or continuous radial polarisation light output are realized in device or optical fiber laser.Such as
Shown in Fig. 3, in beam cross-section, polarization direction is parallel to radial direction eventually.As shown in figure 4, in beam cross-section, polarization
Direction is eventually perpendicular to radial direction.As shown in figure 5,3 output laser of linearly polarized light is exported linear polarization by radial polarisation converter 2
Light is converted to required vector polarised light 4.As shown in fig. 6, when the minute surface of radial polarisation converter 2 is disposed vertically, linearly polarized light
When output laser 1 exports vertical polarization laser, linearly polarized light 3 becomes radial polarisation light by the radial polarisation converter 2.Such as
Shown in Fig. 7, when the minute surface of radial polarisation converter 2 is disposed vertically, during 1 output level polarization laser of linear polarization output laser,
Linearly polarized light 3 becomes radial polarisation light by the radial polarisation converter 2.
The device of the output vector polarised light of the present invention, output light polarization direction can be it is radially either angular or
Outputting radial and angular polarization simultaneously.It is specifically related to the generation and conversion of vector polarization, can be applied to optical tweezer, super-resolution
A series of Application Optics fields such as imaging, Ultra-precision Turning have good and wide applied prospect.
It should be noted that the device of the output vector polarised light of the present invention, mainly improves above structure,
His unmentioned function, component and structure, when needed, may be used the component that can realize corresponding function in the prior art and
Structure is implemented.
Although above having used general explanation and specific embodiment, the present invention is described in detail, at this
On the basis of invention, it can be made some modifications or improvements, this will be apparent to those skilled in the art.Therefore,
These modifications or improvements without departing from theon the basis of the spirit of the present invention belong to the scope of protection of present invention.
Claims (10)
1. a kind of device of output vector polarised light, which is characterized in that the device of the output vector polarised light is included by a left side extremely
The linearly polarized light output laser (1) and radial polarisation converter (2) that the right side with optical axis is set successively, linearly polarized light output laser
The linearly polarized light (3) of device (1) output is by radial polarisation converter (2) output vector polarised light (4)；Linearly polarized light exports laser
Device (1) including with optical axis set successively from left to right pumping source (5), collimation focusing system (6), input mirror (7), gain be situated between
Matter (8) and outgoing mirror (9).
2. the device of output vector polarised light as described in claim 1, which is characterized in that pumping source (5) is output light wavelength
Pumping source for 808nm.
3. the device of output vector polarised light as claimed in claim 2, which is characterized in that the input face plated film of input mirror (7)
Structure is S1:AR@808nm.
4. the device of output vector polarised light as claimed in claim 3, which is characterized in that the output face plated film of input mirror (7)
Structure is S2：AR@808nm、HR@1064nm.
5. the device of output vector polarised light as claimed in claim 4, which is characterized in that gain media (8) is Nd:YVO4。
6. the device of output vector polarised light as claimed in claim 5, which is characterized in that the input face plated film of outgoing mirror (9)
Structure is S1:T=40%@1064nm.
7. the device of output vector polarised light as claimed in claim 6, which is characterized in that the output face plated film of outgoing mirror (9)
Structure is S2:AR@1064nm.
8. the device of output vector polarised light as claimed in claim 7, which is characterized in that outgoing mirror (9) rear is provided with one
The half-wave plate (10) of a 1064nm and a prism (11).
9. the device of output vector polarised light as described in claim 1, which is characterized in that collimation focusing system (6) is including convex
Lens.
10. the device of output vector polarised light as described in claim 1, which is characterized in that collimation focusing system (6) is including two
A convex lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810147720.9A CN108155551A (en) | 2018-02-13 | 2018-02-13 | A kind of device of output vector polarised light |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810147720.9A CN108155551A (en) | 2018-02-13 | 2018-02-13 | A kind of device of output vector polarised light |
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| CN108155551A true CN108155551A (en) | 2018-06-12 |
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| CN201810147720.9A Pending CN108155551A (en) | 2018-02-13 | 2018-02-13 | A kind of device of output vector polarised light |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101552425A (en) * | 2009-05-13 | 2009-10-07 | 中国科学院上海光学精密机械研究所 | Laser for outputting radial polarized beam |
| CN104051941A (en) * | 2014-04-22 | 2014-09-17 | 中国科学院上海光学精密机械研究所 | Passively Q-switched solid laser for pumping ring light and switching output columnar vector light |
| CN107681426A (en) * | 2017-09-22 | 2018-02-09 | 南京大学 | A kind of column symmetry vector light solid state laser for polarizing continuously adjustabe |
| CN208078371U (en) * | 2018-02-13 | 2018-11-09 | 南光高科（厦门）激光科技有限公司 | A kind of device of output vector polarised light |
-
2018
- 2018-02-13 CN CN201810147720.9A patent/CN108155551A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101552425A (en) * | 2009-05-13 | 2009-10-07 | 中国科学院上海光学精密机械研究所 | Laser for outputting radial polarized beam |
| CN104051941A (en) * | 2014-04-22 | 2014-09-17 | 中国科学院上海光学精密机械研究所 | Passively Q-switched solid laser for pumping ring light and switching output columnar vector light |
| CN107681426A (en) * | 2017-09-22 | 2018-02-09 | 南京大学 | A kind of column symmetry vector light solid state laser for polarizing continuously adjustabe |
| CN208078371U (en) * | 2018-02-13 | 2018-11-09 | 南光高科（厦门）激光科技有限公司 | A kind of device of output vector polarised light |
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