CN207217994U - A kind of fiber laser frequency multiplier - Google Patents
A kind of fiber laser frequency multiplier Download PDFInfo
- Publication number
- CN207217994U CN207217994U CN201721304526.4U CN201721304526U CN207217994U CN 207217994 U CN207217994 U CN 207217994U CN 201721304526 U CN201721304526 U CN 201721304526U CN 207217994 U CN207217994 U CN 207217994U
- Authority
- CN
- China
- Prior art keywords
- frequency
- light
- crystal
- double
- fiber laser
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The utility model discloses a kind of fiber laser frequency multiplier, belong to optical-fiber laser domain technology field, the fiber laser frequency multiplier includes the polarizer, condenser lens, Transflective mirror, frequency-doubling crystal, double-colored wave plate, concave surface hysteroscope, light beam bundling device, and the fiber laser frequency multiplier assembling sequence is followed successively by the polarizer, condenser lens, Transflective mirror, frequency-doubling crystal, double-colored wave plate, concave surface hysteroscope, light beam bundling device.The utility model carries out polarization converted and control using a double-colored wave plate to fundamental frequency light and frequency doubled light, and the linear polarization that subcircular frequency doubled light can be obtained under conditions of luminous power is not changed efficiently exports, obtain higher frequency multiplication optical fiber lasing efficiency and laser power, it is more to overcome the optical element that prior art uses, light path is complicated, it is big to adjust difficulty, also add the technical problem of the cost of manufacture of frequency multiplier.
Description
Technical field
The utility model belongs to optical-fiber laser domain technology field, and in particular to a kind of fiber laser frequency multiplier.
Background technology
Optical fiber laser especially high-capacity optical fiber laser obtains considerable hair in field of laser processing in recent years
, there is large quantities of commercialized high-capacity optical fiber lasers and associated laser product in exhibition, and in high power light
In the development course of fibre laser, optical-fiber laser frequency doubling technology and fiber laser frequency multiplier are always one and are related to less side
Face, it is generally all multimode non-polarized light beam that it, which is primarily due to the laser output mode of high-capacity optical fiber laser, and with
It is difficult that high efficiency carries out laser freuqency doubling that machine non-polarized light beam, which is,.In order to obtain higher frequency multiplication optical fiber lasing efficiency and laser work(
For rate, it is necessary to which reasonable in design, easy to operate frequency multiplier structure meets actual demand, the way of prior art is that use is longer
Walk off crystal, basic frequency laser o, e light separation for exporting optical-fiber laser, independent Polarization Control then is carried out to o, e light path, made
It produces double-frequency laser with different light paths respectively, then carries out frequency multiplication combiner output.The optics that this mode is not used only
Element is more, and light path is complicated, and regulation difficulty is big, also add the cost of manufacture of frequency multiplier.
The content of the invention
（1）Technical scheme
For overcome the deficiencies in the prior art, the utility model provides a kind of fiber laser frequency multiplier, the optical-fiber laser
Frequency multiplier includes the polarizer, condenser lens, Transflective mirror, frequency-doubling crystal, double-colored wave plate, concave surface hysteroscope, light beam and closes beam
Device, the fiber laser frequency multiplier assembling sequence are followed successively by the polarizer, condenser lens, Transflective mirror, frequency-doubling crystal, double-colored ripple
Piece, concave surface hysteroscope, light beam bundling device, the polarizer are formed by walking off crystal, and the crystal that walks off can make arbitrarily partially
The optical-fiber laser of polarization state is transformed to mutually orthogonal linearly polarized light, and the condenser lens is made up of focusing convex lens, the transmission
Speculum is that exit facet plates Double-color film anti-reflection to fundamental frequency light, anti-to frequency doubled light height, and the frequency-doubling crystal is brilliant by frequency doubling non-linear
Body is formed, and the double-colored wave plate includes the double-colored quartz wave-plate of the quarter wave plate to fundamental frequency light and the full-wave plate to frequency doubled light, described
The plane of incidence of concave surface hysteroscope is coated with to fundamental frequency light height instead, contains the Double-color film anti-reflection to frequency doubled light simultaneously, and the light beam closes
Beam device is optical-fiber type or free space type light beam bundling device.
Described fiber laser frequency multiplier carries out polarization converted and control using double-colored wave plate to fundamental frequency light and frequency doubled light.
Further, the crystal that walks off in the polarizer is yttrium vanadate crystal or α-barium borate crystal.
Further, the thickness of the yttrium vanadate crystal or α-barium borate crystal is between 0.05 ~ 0.5mm, preferably 0.1mm
Or 0.2mm.
Further, the fiber laser frequency multiplier is by the polarizer, Transflective mirror, frequency-doubling crystal, double-colored wave plate, concave surface
Hysteroscope and light beam bundling device are formed.
Further, frequency doubling non-linear's crystal includes beta-barium borate crystal, lithium triborate crystal, caesium-lithium borate crystal
And potassium titanyl oxygenic phosphate(KTP) crystal.
Further, the condenser lens is identical with the focal length of the concave surface hysteroscope.
Further, the exit facet of the Transflective mirror and the plane of incidence composition laser cavity structure of the concave surface hysteroscope.
Further, the fiber laser frequency multiplier is by the polarizer, Transflective mirror, frequency-doubling crystal, double-colored wave plate, polarization
Light beam bundling device is formed, and the exit facet of the double-colored wave plate is coated with to fundamental frequency light height instead and to the anti-reflection Double-color film of frequency doubled light
Layer so that the exit facet composition laser cavity structure of the exit facet of the Transflective mirror and the double-colored wave plate, the transmission are anti-
Penetrate and frequency-doubling crystal is provided between mirror and the double-colored wave plate.
（2）Beneficial effect
The beneficial effects of the utility model：Compared to prior art, the utility model is using a double-colored wave plate to fundamental frequency
Light and frequency doubled light carry out polarization converted and control, and subcircular frequency doubled light can be obtained under conditions of luminous power is not changed
Linear polarization efficiently export, obtain higher frequency multiplication optical fiber lasing efficiency and laser power, overcome what prior art used
Optical element is more, and light path is complicated, and regulation difficulty is big, also add the technical problem of the cost of manufacture of frequency multiplier.
Brief description of the drawings
Fig. 1 is the fiber laser frequency multiplier structural representation in embodiment 1；
Fig. 2 is the fiber laser frequency multiplier structural representation in embodiment 2；
Fig. 3 is the fiber laser frequency multiplier structural representation in embodiment 3.
Embodiment
The utility model is further described with reference to embodiment.
Embodiment one
As shown in figure 1, the fundamental frequency o light 202, the light beam of fundamental frequency e light 201 in the implementation case are substantially overlapping, it is overlapping
Hot spot subcircular, in order to illustrate laser optical path action principle, two light beams are subjected to separation marking.
The structure composition of the fiber laser frequency multiplier of the present embodiment includes：The polarizer 101, condenser lens 102, Transflective
Mirror 103, nonlinear crystal 104, double-colored wave plate 105, concave surface hysteroscope 106, light beam bundling device 107.Wherein the polarizer 101 is
Yttrium Orthovanadate walks off crystal so that non-polarized fibre laser is separated with fundamental frequency o light 202 and fundamental frequency e light 201, by the He of condenser lens 102
Condenser lens 102 in the 2f systems that concave surface hysteroscope 106 forms is focused, incident beta-barium borate nonlinear crystal 104.Poly-
Transflective mirror 103 is inserted between focus lens 102 and beta-barium borate nonlinear crystal 104, its exit facet is coated with to fundamental frequency light
AR films or the HR films to frequency doubled light.Fundamental frequency light o light 202 produces the e light of frequency multiplication, fundamental frequency e by beta-barium borate nonlinear crystal 104
Light 201 during beta-barium borate nonlinear crystal 104 without frequency doubling non-linear by changing.Then, the fundamental frequency e light 201 of non-frequency multiplication
With frequency multiplication e light after double-colored wave plate 105, in double-colored wave plate 105 is quarter wave plate to fundamental frequency light, is full-wave plate to frequency doubled light,
Fundamental frequency e light 201 is transformed to fundamental frequency o light 202, the negative side of fundamental frequency o light 202 after the reflection of concave surface hysteroscope 106 returns to double-colored wave plate 105
Frequency multiplication e light is produced to being acted on beta-barium borate nonlinear crystal 104, frequency multiplication e light exports after the reflection of Transflective mirror 103.Most
Afterwards, two beam frequency multiplication e light carry out the synthesis output of double-frequency laser light beam by light beam bundling device 107.The advantages of this system is to walk
From crystal thickness within 0.2mm, now frequency multiplication e light spacing only has 20um or so, need not carry out conjunction beam, hot spot again substantially
And subcircular.
Embodiment two
As shown in Fig. 2 the fiber laser frequency multiplier of the present embodiment eliminates condenser lens 102, remaining construction and embodiment
One is identical, exported due to higher in high power optical fibre laser power output collimated light beam it is with a tight waist it is smaller in the case of,
Under the conditions of especially exporting pulse laser, when light intensity has met to obtain efficient frequency doubled light at the waist spot of its fundamental frequency light, make
Frequency-doubling crystal may be damaged with lens strong-focusing.Remaining element function and its implementation process are identical with embodiment one, herein not
Repeat again.
Embodiment three
As shown in figure 3, the fiber laser frequency multiplier of the present embodiment eliminates concave surface hysteroscope 106 and condenser lens
102, remaining construction and embodiment one are identical, and then are being quarter wave plate to fundamental frequency light, are being the double-colored wave plate of full-wave plate to frequency doubled light
It is coated with 301 exit facet to the fundamental frequency light height double-colored film layer anti-reflection to frequency doubled light on the contrary so that the outgoing of Transflective mirror 103
End face and the outgoing end face composition laser cavity structure of double-colored wave plate 301.And it is possible to remove light beam bundling device 107, will rise
Inclined device 101, Transflective mirror 103, nonlinear crystal 104 and double-colored wave plate 301 carry out optical cement or in-depth optical cement processing, make it
Structure is more compact, and use is more convenient.Remaining element function and its implementation process are identical with embodiment one, no longer superfluous herein
State.
Embodiment described above only expresses preferred embodiment of the present utility model, and its description is more specific and detailed,
But therefore it can not be interpreted as the limitation to the utility model patent scope.It should be pointed out that for the common of this area
For technical staff, without departing from the concept of the premise utility, some deformations can also be made, improves and substitutes, this
Belong to the scope of protection of the utility model.Therefore, the protection domain of the utility model patent should using appended claims as
It is accurate.
Claims (8)
1. a kind of fiber laser frequency multiplier, it is characterised in that the fiber laser frequency multiplier includes the polarizer（101）, focus on it is saturating
Mirror（102）, Transflective mirror（103）, frequency-doubling crystal（104）, double-colored wave plate（105）, concave surface hysteroscope（106）, light beam close
Beam device（107）, the fiber laser frequency multiplier assembling sequence is followed successively by the polarizer（101）, condenser lens（102）, Transflective
Mirror（103）, frequency-doubling crystal（104）, double-colored wave plate（105）, concave surface hysteroscope（106）, light beam bundling device（107）, described
Inclined device（101）Formed by walking off crystal, it is described to walk off crystal to be transformed to the optical-fiber laser of random polarization state mutually orthogonal
Linearly polarized light, the condenser lens（102）It is made up of focusing convex lens, the Transflective mirror（103）For exit facet plating pair
Fundamental frequency light is anti-reflection, to the high anti-Double-color film of frequency doubled light, the frequency-doubling crystal（104）It is made up of frequency doubling non-linear's crystal, it is described double
Color wave plate（105）The double-colored quartz wave-plate of full-wave plate including the quarter wave plate to fundamental frequency light and to frequency doubled light, the double-colored wave plate
（105）Polarization converted and control, the concave surface hysteroscope can be carried out to fundamental frequency light and frequency doubled light（106）The plane of incidence be coated with pair
Fundamental frequency light is high anti-, contains the Double-color film anti-reflection to frequency doubled light, the light beam bundling device simultaneously（107）For optical-fiber type or freedom
Spatial mode light beam bundling device.
A kind of 2. fiber laser frequency multiplier according to claim 1, it is characterised in that：The polarizer（101）In walk
It is yttrium vanadate crystal or α-barium borate crystal from crystal.
A kind of 3. fiber laser frequency multiplier according to claim 2, it is characterised in that：The yttrium vanadate crystal or α-boric acid
The thickness of crystal of barium is between 0.05 ~ 0.5mm.
A kind of 4. fiber laser frequency multiplier according to claim 1, it is characterised in that：The fiber laser frequency multiplier is by
Inclined device（101）, Transflective mirror（103）, frequency-doubling crystal（104）, double-colored wave plate（105）, concave surface hysteroscope（106）And light beam
Bundling device（107）Form.
A kind of 5. fiber laser frequency multiplier according to claim 1, it is characterised in that：Frequency doubling non-linear's crystal includes
Beta-barium borate crystal, lithium triborate crystal, caesium-lithium borate crystal and potassium titanyl oxygenic phosphate(KTP) crystal.
A kind of 6. fiber laser frequency multiplier according to claim 1, it is characterised in that：The condenser lens（102）With institute
State concave surface hysteroscope（106）Focal length it is identical.
A kind of 7. fiber laser frequency multiplier according to claim 1, it is characterised in that：The Transflective mirror（103）'s
Exit facet and the concave surface hysteroscope（106）The plane of incidence composition laser cavity structure.
A kind of 8. fiber laser frequency multiplier according to claim 1 or 7, it is characterised in that：The fiber laser frequency multiplier
By the polarizer（101）, Transflective mirror（103）, frequency-doubling crystal（104）, double-colored wave plate（105）, light beam bundling device（107）
Form, and the double-colored wave plate（105）Exit facet be coated with high anti-to fundamental frequency light and to the anti-reflection double-colored film layer of frequency doubled light, make
Obtain the Transflective mirror（103）Exit facet and the double-colored wave plate（105）Exit facet composition laser cavity structure, it is described
Penetrate speculum（103）With the double-colored wave plate（105）Between be provided with frequency-doubling crystal（104）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721304526.4U CN207217994U (en) | 2017-10-11 | 2017-10-11 | A kind of fiber laser frequency multiplier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721304526.4U CN207217994U (en) | 2017-10-11 | 2017-10-11 | A kind of fiber laser frequency multiplier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207217994U true CN207217994U (en) | 2018-04-10 |
Family
ID=61820835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721304526.4U Expired - Fee Related CN207217994U (en) | 2017-10-11 | 2017-10-11 | A kind of fiber laser frequency multiplier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207217994U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107623247A (en) * | 2017-10-11 | 2018-01-23 | 福建科彤光电技术有限公司 | A kind of fiber laser frequency multiplier |
-
2017
- 2017-10-11 CN CN201721304526.4U patent/CN207217994U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107623247A (en) * | 2017-10-11 | 2018-01-23 | 福建科彤光电技术有限公司 | A kind of fiber laser frequency multiplier |
| CN107623247B (en) * | 2017-10-11 | 2023-12-26 | 福建科彤光电技术有限公司 | Fiber laser frequency multiplier |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106911062A (en) | A kind of green glow output optical fibre laser | |
| Zhang et al. | 175 to 210 nm widely tunable deep-ultraviolet light generation based on KBBF crystal | |
| CN102983489A (en) | Intermediate infrared laser source produced based on non-linear difference frequency of optical laser | |
| CN110068979A (en) | A kind of visible ultraviolet band optical frequency converter | |
| CN101345388A (en) | Solid laser device for simultaneously outputting red, yellow and green light and its laser generation method | |
| CN101986484A (en) | Laser triple frequency system | |
| CN103531996A (en) | Three-terminal output dual-wavelength laser | |
| US5123022A (en) | Frequency mixing crystal | |
| CN107623247A (en) | A kind of fiber laser frequency multiplier | |
| CN207217994U (en) | A kind of fiber laser frequency multiplier | |
| CN201853941U (en) | All-solid triple frequency laser | |
| US9543732B2 (en) | Laser wavelength conversion apparatus | |
| CN107394575A (en) | The frequency doubling device of laser | |
| CN105790045B (en) | Big energy period magnitude superelevation signal-to-noise ratio femtosecond seed pulse generation device | |
| CN213692642U (en) | Double-light-path beam-combining laser | |
| CN210379758U (en) | Acousto-optic Q-switched ultraviolet laser | |
| CN207474912U (en) | The frequency doubling device of laser | |
| CN204517147U (en) | A kind of single longitudinal mode continuous wave optical parametric oscillator | |
| Wang et al. | Wide-tunable mid infrared intra-cavity optical parametric oscillator based on multi-period MgO: PPLN | |
| CN207638146U (en) | Continuous wave 593nm optical parametric oscillators and optical device | |
| CN106410582A (en) | Shared chamber light parameter oscillator of human-eye safe wave-band continuous output | |
| CN103001111A (en) | Terahertz source generated based on nonlinear difference frequency of fiber lasers | |
| CN100438232C (en) | Quasi-continuous high power red, green double-wavelength laser with LD side pumping | |
| CN106207717B (en) | A kind of multi beam terahertz radiation source based on optical difference frequency effect | |
| CN101752773B (en) | Laser head |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180410 Termination date: 20211011 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |