Utility model content
The purpose of this utility model is to provide dual laser, to improve above mentioned problem.
To achieve these goals, the technical scheme that the utility model embodiment uses is as follows:
The utility model embodiment provides a kind of dual laser.The dual laser includes film layer, laser
Cavity and self-frequency-doubling crystal, the film layer include the first film layer and the second film layer, and the self-frequency-doubling crystal is arranged at the laser
In cavity, the first film layer plating is located at the plane of incidence of the self-frequency-doubling crystal, and the second film layer plating is located at described from frequency multiplication
The exit facet of crystal, wherein first film layer is including anti-reflection near infrared band and high to fundamental frequency light wave band and frequency multiplication optical band
Anti- saturating film, second film layer include anti-reflection near infrared band and frequency multiplication optical band and high anti-saturating to fundamental frequency light wave band
Film.
Further, the dual laser also includes near-infrared generating means, and the near-infrared generating means is set
In the entering light side of the laser cavity, incidence of the near infrared light that the near-infrared generating means is sent from the self-frequency-doubling crystal
Face enters in the laser cavity.
Further, the dual laser also includes light ray coupling device, and the light ray coupling device is arranged at institute
State between infrared generator and the laser cavity, the light ray coupling device sends the infrared generator near red
Outer light converges at the plane of incidence of the self-frequency-doubling crystal.
Further, the dual laser also includes double optically coupled devices, and double optically coupled devices are arranged at institute
The light emission side of laser cavity is stated, the light exported with the exit facet converged from the self-frequency-doubling crystal.
Further, the dual laser also includes optical fiber, and the receiving terminal of the optical fiber is placed in double optical couplings
Side of the device away from the laser cavity, to receive and propagate the light of double optically coupled device convergences.
Further, the dual laser also includes beam-expanding collimation device, and the beam-expanding collimation device is arranged at institute
The output end of optical fiber is stated, to receive the light of the spread fiber.
The utility model embodiment also provides a kind of dual laser.The dual laser includes film layer, laser
Cavity, output coupling mirror and self-frequency-doubling crystal, the film layer include the first film layer and the second film layer, the self-frequency-doubling crystal and institute
State output coupling mirror to may be contained within the laser cavity, the plane of incidence of the output coupling mirror closes on the self-frequency-doubling crystal's
Exit facet, located at the plane of incidence of the self-frequency-doubling crystal, it is defeated that the second film layer plating is located at the coupling for the first film layer plating
The exit facet of appearance, wherein, first film layer includes anti-reflection near infrared band and to fundamental frequency light wave band and frequency multiplication optical band
High anti-saturating film, second film layer include anti-reflection near infrared band and frequency multiplication optical band and high anti-saturating to fundamental frequency light wave band
Film.
Further, the film layer also includes third membrane layer, and the exit facet of the self-frequency-doubling crystal couples output with described
The plane of incidence of mirror, which plates, sets the third membrane layer, wherein, the third membrane layer is included to the fundamental frequency light wave band and frequency multiplication light wave
The film that section is anti-reflection.
Further, the dual laser also includes light ray coupling device and near-infrared generating means, described near red
Outer generating means is arranged at the entering light side of the laser cavity, the light ray coupling device be arranged at the infrared generator with
Between the laser cavity, the light ray coupling device by the near infrared light that the infrared generator is sent converge at it is described from
The plane of incidence of frequency-doubling crystal, to enter the laser cavity.
Further, the dual laser also includes double optically coupled devices, and double optically coupled devices are arranged at institute
The light emission side of laser cavity is stated, the light exported with the exit facet converged from the output coupling mirror.
Compared with prior art, the dual laser provided by the utility model include film layer, laser cavity and from
Frequency-doubling crystal, the film layer include the first film layer and the second film layer, and the self-frequency-doubling crystal is arranged in the laser cavity, institute
State the plane of incidence of the first film layer plating located at the self-frequency-doubling crystal, outgoing of the second film layer plating located at the self-frequency-doubling crystal
Face, wherein first film layer includes film anti-reflection near infrared band and anti-saturating to fundamental frequency light wave band and frequency multiplication optical band height,
Second film layer includes film anti-reflection near infrared band and frequency multiplication optical band and anti-saturating to fundamental frequency light wave band height.Near infrared light
Ripple generates near infrared light and visible ray, two kinds of light same light paths after passing through laser cavity.Simple in construction, cost is low, is easy to debug.And
It is strong to Acclimation temperature ability.
To enable above-mentioned purpose of the present utility model, feature and advantage to become apparent, preferred embodiment cited below particularly, and
Accompanying drawing appended by cooperation, is described in detail below.
Embodiment
Below in conjunction with accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out clear
Chu, it is fully described by, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole realities
Apply example.The component of the utility model embodiment being generally described and illustrated herein in the accompanying drawings can be come with a variety of configurations
Arrangement and design.Therefore, the detailed description of the embodiment of the present utility model to providing in the accompanying drawings is not intended to limit below
Claimed the scope of the utility model, but it is merely representative of selected embodiment of the present utility model.Based on the utility model
Embodiment, the every other embodiment that those skilled in the art are obtained on the premise of creative work is not made, all
Belong to the scope of the utility model protection.
It should be noted that:Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent accompanying drawing in individual accompanying drawing.It is meanwhile new in this practicality
In the description of type, term " first ", " second " etc. are only used for distinguishing description, and it is not intended that indicating or implying relatively important
Property.
First embodiment
Referred to incorporated by reference to Fig. 1 and Fig. 2, the dual laser 100 that the utility model embodiment is provided includes film layer (figure
Do not mark), laser cavity (figure do not mark) and self-frequency-doubling crystal 10.The self-frequency-doubling crystal 10 is arranged in the laser cavity.Institute
Film layer plating is stated located at the outside of the self-frequency-doubling crystal 10.
Self-frequency-doubling crystal 10 includes the plane of incidence and exit facet.Self-frequency-doubling crystal 10 can be that a kind of fundamental crystal and frequency multiplication are brilliant
The composite crystal of body.Specifically, self-frequency-doubling crystal 10 can include adulterating Nd+ rare earth ions (such as GDCOB, YAB etc.)
The composite crystal from frequency multiplication host material of laser host material and doping Yb+ ions (such as YAB, YCOB etc.).It is brilliant from frequency multiplication
Body 10 declines with the change of temperature, shg efficiency unobvious.The plane of incidence of the self-frequency-doubling crystal 10 is towards the laser cavity
The entering light side of body, the light emission side of the exit facet of the self-frequency-doubling crystal 10 towards the laser cavity.In the present embodiment, it is described from
The plane of incidence and exit facet of frequency-doubling crystal 10 are the hysteroscope face of the laser cavity.
Film layer includes the first film layer 21 and the second film layer (figure is not marked).The plating of first film layer 21 is located at described brilliant from frequency multiplication
The plane of incidence of body 10, exit facet of the second film layer plating located at the self-frequency-doubling crystal 10.It should be noted that the first film layer
21 include film anti-reflection near infrared band and anti-saturating to fundamental frequency light wave band and frequency multiplication optical band height.Second film layer include pair
Near infrared band and frequency multiplication optical band are anti-reflection and to the high anti-saturating film of fundamental frequency light wave band.First film layer 21 allows the light of near infrared band
Into out of self-frequency-doubling crystal 10, self-frequency-doubling crystal 10 is cut by certain phase matching angle, is cut by self-frequency-doubling crystal 10
Direction can realize that infrared light is converted into visible ray.Specifically, self-frequency-doubling crystal will be passed through in the self-frequency-doubling crystal 10 of entrance
The near infrared light (such as light that wavelength is 915nm or 880nm) of 10 cut direction is converted into the fundamental frequency of 1000-1150nm wave bands
Light.First film layer 21 and the second film layer are high anti-to the light of fundamental frequency light wave band, fundamental frequency light the first film layer 21 and the second film layer it
Between back and forth vibrate during, using the nonlinear effect of itself of self-frequency-doubling crystal 10, fundamental frequency light is converted into wavelength is
The frequency doubled light of 500-570nm wave bands, you can see light.First film layer 21 is high to frequency doubled light anti-, and the second film layer is high to frequency doubled light thoroughly, makes
It can be seen that exported thoroughly from the exit facet of self-frequency-doubling crystal 10.Second film layer is also high near infrared light saturating, is not converted to visible times
The near infrared light of frequency light can also be exported thoroughly by the exit facet of self-frequency-doubling crystal 10.It should be noted that when incident near-infrared
When light energy exceedes the photo threshold of self-frequency-doubling crystal 10, self-frequency-doubling crystal 10 can just be vibrated according near infrared light produces visible ray,
The exit facet of self-frequency-doubling crystal 10 can be just set to export near infrared light and visible ray thoroughly.When the near infrared energy of incidence is less than from again
During the photo threshold of frequency crystal 10, the exit facet of self-frequency-doubling crystal 10 only exports near infrared light thoroughly.User can by adjust into
The near infrared energy penetrated controls whether dual laser 100 exports the light of same light path dual wavelength.
The dual laser 100 also includes near-infrared generating means 30, light ray coupling device 40, double optically coupled devices
50th, optical fiber 60 and beam-expanding collimation device 70.
The near-infrared generating means 30 is arranged at the entering light side of the laser cavity.The light ray coupling device 40 is set
Between the infrared generator 30 and the laser cavity.The near infrared light that the near-infrared generating means 30 is sent is from institute
The plane of incidence for stating self-frequency-doubling crystal 10 enters in the laser cavity.Specifically, the light ray coupling device 40 will be described infrared
The near infrared light that generating means 30 is sent converges at the plane of incidence of the self-frequency-doubling crystal 10.
In the present embodiment, infrared generator 30 can be near-infrared LD.It should be noted that near-infrared LD transmitting
Peak should be with the absorption peak match of self-frequency-doubling crystal 10.Near-infrared LD packing forms can be that TO is encapsulated, or C-mount, or
Other packing forms of person.LD output laser wavelengths are determined by the species of Doped ions, and if Doped ions are Nd+, then LD outputs are sharp
Optical band is between 800-900nm, and if Doped ions are Yb+, then LD exports laser wavelength between 850-980nm.Light coupling
It can be Lens Coupling component, fiber coupling component etc. to attach together and put 40, do not limited herein.
Double optically coupled devices 50, optical fiber 60 and beam-expanding collimation device 70 are respectively provided with the light emission side with the laser cavity.
Exit facet of double optically coupled devices 50 adjacent to the self-frequency-doubling crystal 10.The optical fiber 60 includes receiving terminal 61 and defeated
Go out end 62.The receiving terminal 61 of optical fiber 60 is placed in the side of the double optically coupled devices 50 away from the laser cavity.Beam-expanding collimation
Device 70 is arranged at outgoing of the 62 pairs of optically coupled devices 50 of output end of the optical fiber 60 with convergence from the self-frequency-doubling crystal 10
The light of face output, and the optical coupling of convergence is entered into optical fiber 60.Optical fiber 60 is used to receive and propagate double optically coupled devices 50 to converge
Poly- light.It should be noted that light can only have near infrared light, two kinds of same light paths of near infrared light and visible ray can also be included not
The light of co-wavelength.Optical fiber 60 can propagate the light of two kinds of different wave lengths simultaneously, and be exported from the output end 62 of optical fiber 60.Expand standard
Straight device 70 is used to receive the light exported from the output end 62 of optical fiber 60.Light realizes far-field spot after beam-expanding collimation device 70
Compression.
Second embodiment
Fig. 3 is refer to, the utility model embodiment also provides a kind of dual laser 200, the dual laser
200 include film layer (figure is not marked), laser cavity (figure is not marked), output coupling mirror 280 and self-frequency-doubling crystal 210.
Self-frequency-doubling crystal 210 is roughly the same with the self-frequency-doubling crystal 10 provided in first embodiment, will not be repeated here.Institute
State self-frequency-doubling crystal 210 and the output coupling mirror 280 may be contained within the laser cavity, and be arranged at intervals.It is described from times
The plane of incidence of frequency crystal 210 is towards the entering light side of the laser cavity.The plane of incidence of the output coupling mirror 280 close on it is described from
The exit facet of frequency-doubling crystal 210.Light emission side of the exit facet of the output coupling mirror 280 towards the laser cavity.This implementation
In example, the plane of incidence of the self-frequency-doubling crystal 210 and the exit facet of output coupling mirror 280 are respectively two of the laser cavity
Hysteroscope face.
The film layer includes the first film layer (figure is not marked) and the second film layer (figure is not marked).The first film layer plating is located at described
The plane of incidence of self-frequency-doubling crystal 210, exit facet of the second film layer plating located at the output coupling mirror 280.Specifically, it is described
First film layer includes film anti-reflection near infrared band and anti-saturating to fundamental frequency light wave band and frequency multiplication optical band height, second film layer
Including film anti-reflection near infrared band and frequency multiplication optical band and anti-saturating to fundamental frequency light wave band height.
As shown in figure 4, the film layer also includes third membrane layer 23.The exit facet of the self-frequency-doubling crystal 210 and the coupling
The plane of incidence of conjunction outgoing mirror 280, which plates, sets the third membrane layer 23, wherein, the third membrane layer 23 is included to the fundamental light wave
Section and the anti-reflection film of frequency multiplication optical band.
The dual laser 200 also includes near-infrared generating means 230, light ray coupling device 240, double optocouplers and attached together
Put 250, optical fiber 260 and beam-expanding collimation device 270.
The near-infrared generating means 230 is arranged at the entering light side of the laser cavity.The light ray coupling device 240 is set
It is placed between the infrared generator 230 and the laser cavity.The near infrared light that the near-infrared generating means 230 is sent
Enter from the plane of incidence of the self-frequency-doubling crystal 210 in the laser cavity.Specifically, the light ray coupling device 240 is by institute
State the plane of incidence that the near infrared light that infrared generator 230 is sent converges at the self-frequency-doubling crystal 210.
In the present embodiment, infrared generator 230 can be near-infrared LD.It should be noted that near-infrared LD hair
Penetrating peak should be with the absorption peak match of self-frequency-doubling crystal 210.Near-infrared LD packing forms can be that TO is encapsulated, or C-mount,
Or other packing forms.LD output laser wavelengths are determined by the species of Doped ions, if Doped ions are Nd+, then LD outputs
Laser wavelength is between 800-900nm, and if Doped ions are Yb+, then LD exports laser wavelength between 850-980nm.Light
Coupling device 240 can be Lens Coupling component, fiber coupling component etc., not limit herein.
Double optically coupled devices 250, optical fiber 260 and beam-expanding collimation device 270 are respectively provided with the light emission side with the laser cavity.
Exit facet of double optically coupled devices 250 adjacent to the output coupling mirror 280.The optical fiber 260 includes receiving terminal 261
And output end 262.The receiving terminal 261 of optical fiber 260 is placed in the side of the double optically coupled devices 250 away from the laser cavity.
Beam-expanding collimation device 270 is arranged at 262 pairs of optically coupled devices 250 of output end of the optical fiber 260 to converge from described from frequency multiplication
The light of the exit facet output of crystal 210, and the optical coupling of convergence is entered into optical fiber 260.Optical fiber 260 is used to receiving and propagating described pair
The light that optically coupled device 250 converges.It should be noted that light can only have near infrared light, near infrared light can also be included and can
See the light of two kinds of same light path different wave lengths of light.Optical fiber 260 can propagate the light of two kinds of different wave lengths simultaneously, and from optical fiber 260
Output end 262 exports.Beam-expanding collimation device 270 is used to receive the light exported from the output end 262 of optical fiber 260.Light is through expanding standard
After straight device 270, the compression of far-field spot is realized.
In summary, the utility model provides a kind of dual laser.The dual laser includes film layer, laser
Cavity and self-frequency-doubling crystal, the film layer include the first film layer and the second film layer, and the self-frequency-doubling crystal is arranged at the laser
In cavity, the first film layer plating is located at the plane of incidence of the self-frequency-doubling crystal, and the second film layer plating is located at described from frequency multiplication
The exit facet of crystal, wherein first film layer is including anti-reflection near infrared band and high to fundamental frequency light wave band and frequency multiplication optical band
Anti- saturating film, second film layer include anti-reflection near infrared band and frequency multiplication optical band and high anti-saturating to fundamental frequency light wave band
Film.Near-infrared light waves can export same light path simultaneously through generation near infrared light after laser cavity and visible ray, dual laser
Two kinds of different wave lengths light.Practical and simple in construction, cost is low, is easy to debug.It is and strong to Acclimation temperature ability.
It should be noted that herein, such as first and second or the like relational terms are used merely to a reality
Body or operation make a distinction with another entity or operation, and not necessarily require or imply and deposited between these entities or operation
In any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant are intended to
Nonexcludability includes, so that process, method, article or equipment including a series of elements not only will including those
Element, but also the other element including being not expressly set out, or it is this process, method, article or equipment also to include
Intrinsic key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that
Other identical element also be present in process, method, article or equipment including the key element.
Preferred embodiment of the present utility model is the foregoing is only, is not limited to the utility model, for this
For the technical staff in field, the utility model can have various modifications and variations.It is all in the spirit and principles of the utility model
Within, any modification, equivalent substitution and improvements made etc., it should be included within the scope of protection of the utility model.It should be noted that
Arrive:Similar label and letter represents similar terms in following accompanying drawing, therefore, once determined in a certain Xiang Yi accompanying drawing
Justice, then it further need not be defined and explained in subsequent accompanying drawing.
It is described above, only specific embodiment of the present utility model, but the scope of protection of the utility model is not limited to
In this, any one skilled in the art can readily occur in change in the technical scope that the utility model discloses
Or replace, it should all cover within the scope of protection of the utility model.Therefore, the scope of protection of the utility model should be described with power
The protection domain that profit requires is defined.