CN107069414A - Minimize hundred picosecond laser beauty instruments - Google Patents
Minimize hundred picosecond laser beauty instruments Download PDFInfo
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- CN107069414A CN107069414A CN201710408352.4A CN201710408352A CN107069414A CN 107069414 A CN107069414 A CN 107069414A CN 201710408352 A CN201710408352 A CN 201710408352A CN 107069414 A CN107069414 A CN 107069414A
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- 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
- H01S3/11—Mode locking; Q-switching; Other giant-pulse techniques, e.g. cavity dumping
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/18—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
- A61B18/20—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser
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- 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
- H01S3/09—Processes or apparatus for excitation, e.g. pumping
- H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
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Abstract
Hundred picosecond laser beauty instruments are minimized the invention provides one kind.Minimizing hundred picosecond laser beauty instruments includes first laser rod, xenon lamp, second laser rod, housing, adjusting Q crystal, outgoing mirror, aperture, the first polarizer, Effect of Back-Cavity Mirror, optical transmission unit, the second polarizer, the first convex lens, the 3rd total reflective mirror, the 4th total reflective mirror, quarter wave plate, SBS ponds, the 5th total reflective mirror, 1/2 wave plate, the 3rd polarizer, nonlinear crystal and light-conducting arm；First laser rod, xenon lamp and second laser rod are fixed in housing, and first laser rod, xenon lamp and second laser rod be arranged in parallel.The hundred picosecond laser beauty instruments of the present invention are by the way that first laser rod and second laser rod are fixed in one apparatus, by multiple speculums by the more compact of light path design, and amplified twice by the realization of second laser rod, so that causing whole beauty instrument compact conformation, convenient use in the case where obtaining high energy picosecond laser.
Description
Technical field
The present invention relates to laser beautifying technology, more particularly to a kind of hundred picosecond laser beauty instruments of miniaturization.
Background technology
At present, it is currently used for laser cosmetic instrument and typically uses nanosecond (ns) laser.However, the beauty effect of nanosecond laser
Fruit is not fine.
Because the action time of laser is shorter, the laser energy that accumulation is absorbed in target tissue is just less susceptible to group around
Diffusion is knitted, energy is farthest confined to need in the target for the treatment of, protects normal surrounding tissue, so that treatment
Selectivity is stronger.
Under hundred Ps Laser Pulse width conditions, realize that higher single pulse energy and higher power are worldwide difficulties
Topic, only has CYNOSURE companies of the U.S. and SYNERON companies of Israel in the world at present, is developed in 2014 for treating color
Disposition disease and remove tatoo and beauty hundred picosecond lasers.
Hundred picosecond lasers are nearly free from thermal losses, almost due to extremely short pulse width in interaction process
Without thermal ablation.In laser medicine field, the mechanism of action of hundred picosecond lasers is based primarily upon photodynamics (optoacoustic) effect, and pulse is all
Phase longer beauty laser and intense pulsed light (IPL) equipment then use photo-thermal effect.By shorter hundred picosecond pulse and Geng Gao
Peak power, hundred picosecond lasers can treat pigmentosa disease of skin, effectively by less course for the treatment of and more preferable curative effect
Removal is tatooed, and is improved patient comfort, is become a kind of new cosmetic tool.
At present, the technology path for obtaining hundred picosecond pulse mainly has two kinds, mode-locking technique and short cavity technology.Mode-locking technique one
As obtained using locked mode element and be shorter than the pulse of a nanosecond, debugging is complicated, and stability is poor, and single pulse energy is low, safeguards inconvenience；
Short cavity technology typically uses LD pumped thin disk crystal, and resonator is very short, and beam quality is poor, and will to coolant water temperature control
Ask high.Both approaches will realize hundred picosecond lasers of big energy, involve great expense.
The content of the invention
The brief overview on the present invention is given below, to provide on the basic of certain aspects of the invention
Understand.It should be appreciated that this general introduction is not the exhaustive general introduction on the present invention.It is not intended to determine the pass of the present invention
Key or pith, nor is it intended to limit the scope of the present invention.Its purpose only provides some concepts in simplified form,
In this, as the preamble in greater detail discussed later.
In consideration of it, minimizing hundred picosecond laser beauty instruments the invention provides one kind, swashed with least solving existing psec
Light beauty instrument is bulky, it is expensive the problem of.
According to an aspect of the invention, there is provided a kind of hundred picosecond laser beauty instruments of miniaturization, hundred psecs of miniaturization swash
Light beauty instrument includes first laser rod, xenon lamp, second laser rod, housing, adjusting Q crystal, outgoing mirror, aperture, the first polarization
Piece, Effect of Back-Cavity Mirror, optical transmission unit, the second polarizer, the first convex lens, the 3rd total reflective mirror, the 4th total reflective mirror, quarter wave plate, SBS
Pond, the 5th total reflective mirror, 1/2 wave plate, the 3rd polarizer, nonlinear crystal and light-conducting arm；Outgoing mirror is partially reflecting mirror；First swashs
Optical wand, xenon lamp and second laser rod are fixed in housing, and first laser rod, xenon lamp and second laser rod be arranged in parallel；Edge
The optical transmission direction of first laser rod, aperture, the first polarizer and Effect of Back-Cavity Mirror are sequentially provided with the side of first laser rod,
And it is sequentially provided with adjusting Q crystal and outgoing mirror in the opposite side of first laser rod so that laser shakes between outgoing mirror and Effect of Back-Cavity Mirror
Swing and exported by outgoing mirror, and make successively via the transmission direction after optical transmission unit to change from the p-polarization light of outgoing mirror outgoing
Become after 180 degree, again through being incident to one end of second laser rod after the second polarizer, and brought out from the another of second laser rod
Penetrate；Along the outgoing light direction of second laser rod be sequentially provided with the first convex lens, the 3rd total reflective mirror, the 4th total reflective mirror, quarter wave plate and
SBS ponds so that the p-polarization light from the other end outgoing of second laser rod is successively via the first convex lens, the 3rd total reflective mirror and
Quarter wave plate is incident to after four total reflective mirrors, and is converted to and is focused to after circularly polarized light in SBS ponds by quarter wave plate so that from SBS
The circularly polarized light that pond is reversely exported via quarter wave plate be converted to s polarised lights and successively via the 4th total reflective mirror, the 3rd total reflective mirror,
The second polarizer is incident to after first convex lens and second laser rod, and is reflected by the second polarizer；Wherein, it is reverse from SBS ponds
The circularly polarized light of output is that pulsewidth is the stokes light in the range of 100ps-800ps；The s polarised lights reflected from the second polarizer
Transmission direction on be sequentially provided with the 5th total reflective mirror, 1/2 wave plate, the 3rd polarizer and nonlinear crystal so that from second polarization
The s polarised lights of piece reflection are converted to p-polarization light output via after the 5th total reflective mirror, again through 1/2 wave plate, the p exported from 1/2 wave plate
Polarised light is inputted to the laser input of light-conducting arm after nonlinear crystal again after passing through the 3rd polarizer, with from light-conducting arm
Laser output is exported.
Further, outgoing mirror is 50% reflection, 50% diaphotoscope.
Further, outgoing mirror includes plano-concave lens, and provided with the second convex lens between plano-concave lens and optical transmission unit
Mirror；Wherein, the plane of plano-concave lens scribbles part reflective semitransparent film, and the concave surface of plano-concave lens scribbles anti-reflection film, so that laser is in plano-concave
Vibrate and exported by the plane of plano-concave lens between the plane and Effect of Back-Cavity Mirror of lens, and make from the planar exit of plano-concave lens
P-polarization light turns into directional light after the concave surface diverging of plano-concave lens and the second convex lens are assembled, and realization is expanded.
Further, optical transmission unit includes the first total reflective mirror and the second total reflective mirror, wherein, the p from outgoing mirror outgoing is inclined
Shake optical transmission direction relative p-polarization light from outgoing mirror outgoing of the light after the first total reflective mirror reflects and the second total reflective mirror reflects
Transmission direction changes 180 degree, reenters and is incident upon the second polarizer.
Further, optical transmission unit includes right angle prism, wherein, from the p-polarization light vertical incidence of outgoing mirror outgoing
To the base of the right angle prism, after being reflected successively by two right-angle sides of the right angle prism, from the bottom of the right angle prism
After the vertical exit of side, reenter and be incident upon the second polarizer.
The existing method for realizing psec generally has two kinds, and one kind is mode-locking technique, and another is short cavity technology.Wherein, lock
Mould laser structure is complicated, and stability is poor, and single-pulse laser energy is low, if to realize the big energy psec that beauty instrument needs, needs
Regenerative amplification and casacade multi-amplifier that structure is extremely complex are wanted, construction cost and maintenance cost are all extremely high；And short cavity technology
It is to produce a psec seed using the extremely short laser oscillator of a chamber length, in order to realize that extremely short chamber is long, it is necessary to use
Diode pumping structure, in order to obtain stable picosecond laser output from short cavity oscillator, to the temperature control of diode extremely
Strictly, the change of environment temperature is very sensitive to this temperature control, causes system complex, with high costs, stability is poor, also, due to
Chamber length is too short, and laser output energy is very low, it is necessary to can be only achieved high-energy psec using multistage amplification.
Compared to above prior art, the picosecond laser beauty instrument of miniaturization hundred of the invention is realized by second laser rod
The amplification first of laser, obtains hundred picosecond lasers, then hundred picosecond laser backtrackings of acquisition is swashed by second by SBS ponds
Optical wand, realizes the secondary amplification of laser.Amplification first with secondary amplification is realized by second laser rod, and second laser rod
It is fixed on first laser rod in a device (i.e. housing), it is achieved thereby that making in the case where to laser repeatedly amplify
Obtain the compact conformation of whole instrument, take up space less effect.Compared to existing psec beauty instrument, miniaturization of the invention
Hundred picosecond laser beauty instruments can not only realize traditional preferable effect of psec beauty instrument, and realize picosecond laser using SBS,
By the compact light path design of multistage amplification so that beauty instrument more compact structure of the invention, use more facilitates.
To sum up, the picosecond laser beauty instrument of miniaturization hundred of the invention has beneficial effect：(1) skin of miniaturization hundred of the invention
Second laser cosmetic instrument, by the way that the laser pump cavity of oscillator and first order amplifier is combined together, reduces a laser pump cavity, can
To use two laser bars of an xenon flash lamp pumping, the utilization ratio of pump light is improved, compact conformation is realized, laser is improved
The stability of output, reduces cost；(2) the picosecond laser beauty instrument of miniaturization hundred of the invention, it obtains skin using SBS technologies
Second laser, SBS has the energy reflectivity more than 90%, and capacity usage ratio is high, and simple in construction, with low cost, SBS has phase
Conjugate property, can be completely along backtracking light path, with autocollimatic function, and convenient regulation is favorably improved structure steady
It is qualitative；(3) the picosecond laser beauty instrument of miniaturization hundred of the invention, the flat output mirror and first order beam expanding lens of laser oscillator
Concavees lens merge into a mirror, realize compact conformation, save a mirror and an adjustment frame, stability is more preferable.
This method only has in the present invention, and oscillator uses average mirror structure, and oscillator output is small light spot, it is necessary to expand
, just can be effective with rear stage laser amplifier rod.
By the detailed description below in conjunction with accompanying drawing to highly preferred embodiment of the present invention, these and other of the invention is excellent
Point will be apparent from.
Brief description of the drawings
The present invention can be by reference to being better understood, wherein in institute below in association with the description given by accompanying drawing
Have and used same or analogous reference in accompanying drawing to represent same or similar part.The accompanying drawing is together with following
Describe the part for including in this manual and being formed this specification together in detail, and for this is further illustrated
The preferred embodiment of invention and the principle and advantage for explaining the present invention.In the accompanying drawings：
Fig. 1 is the structural representation for an example for showing the picosecond laser beauty instrument of miniaturization hundred of the present invention；
Fig. 2 is the structural representation for another example for showing the picosecond laser beauty instrument of miniaturization hundred of the present invention；
Fig. 3 and Fig. 4 are the structural representations for other two examples for showing the picosecond laser beauty instrument of miniaturization hundred of the present invention
Figure；
Fig. 5 is to show showing for plano-concave lens and the second convex lens in the picosecond laser beauty instrument of miniaturization hundred shown in Fig. 2
It is intended to.
It will be appreciated by those skilled in the art that element in accompanying drawing is just for the sake of showing for the sake of simple and clear,
And be not necessarily drawn to scale.For example, the size of some elements may be exaggerated relative to other elements in accompanying drawing, with
Just it is favorably improved the understanding to the embodiment of the present invention.
Embodiment
The one exemplary embodiment of the present invention is described hereinafter in connection with accompanying drawing.For clarity and conciseness,
All features of actual embodiment are not described in the description.It should be understood, however, that developing any this actual implementation
Many decisions specific to embodiment must be made during example, to realize the objectives of developer, for example, symbol
Those restrictive conditions related to system and business are closed, and these restrictive conditions may have with the difference of embodiment
Changed.In addition, it also should be appreciated that, although development is likely to be extremely complex and time-consuming, but to having benefited from the disclosure
For those skilled in the art of content, this development is only routine task.
Herein, in addition it is also necessary to which explanation is a bit, in order to avoid having obscured the present invention because of unnecessary details, in the accompanying drawings
It illustrate only and according to the closely related apparatus structure of the solution of the present invention and/or process step, and eliminate and the present invention
The little other details of relation.
Hundred picosecond laser beauty instruments are minimized The embodiment provides one kind, hundred picosecond laser beauty instruments are minimized
Including first laser rod, xenon lamp, second laser rod, housing, adjusting Q crystal, outgoing mirror, aperture, the first polarizer, back cavity
Mirror, optical transmission unit, the second polarizer, the first convex lens, the 3rd total reflective mirror, the 4th total reflective mirror, quarter wave plate, SBS ponds, the 5th
Total reflective mirror, 1/2 wave plate, the 3rd polarizer, nonlinear crystal and light-conducting arm；Outgoing mirror is partially reflecting mirror；First laser rod, xenon
Lamp and second laser rod are fixed in housing, and first laser rod, xenon lamp and second laser rod be arranged in parallel；Along first laser
The optical transmission direction of rod, aperture, the first polarizer and Effect of Back-Cavity Mirror are sequentially provided with the side of first laser rod, and first
The opposite side of laser bar is sequentially provided with adjusting Q crystal and outgoing mirror so that laser vibrates and passed through between outgoing mirror and Effect of Back-Cavity Mirror
Outgoing mirror is exported, and makes to change 180 degree via the transmission direction after optical transmission unit successively from the p-polarization light of outgoing mirror outgoing
Afterwards, again through one end that second laser rod is incident to after the second polarizer, and from the other end outgoing of second laser rod；Along second
The outgoing light direction of laser bar is sequentially provided with the first convex lens, the 3rd total reflective mirror, the 4th total reflective mirror, quarter wave plate and SBS ponds, makes
The p-polarization light from the other end outgoing of second laser rod is obtained successively via the first convex lens, the 3rd total reflective mirror and the 4th total reflective mirror
After be incident to quarter wave plate, and be converted to and focused to after circularly polarized light in SBS ponds by quarter wave plate so that be reversely defeated from SBS ponds
The circularly polarized light gone out is converted to s polarised lights and successively via the 4th total reflective mirror, the 3rd total reflective mirror, the first convex lens via quarter wave plate
The second polarizer is incident to after mirror and second laser rod, and is reflected by the second polarizer；Wherein, the circle reversely exported from SBS ponds
Polarised light is that pulsewidth is the stokes light in the range of 100ps-800ps；The transmission side of the s polarised lights reflected from the second polarizer
The 5th total reflective mirror, 1/2 wave plate, the 3rd polarizer and nonlinear crystal are sequentially provided with upwards, so that the s reflected from the second polarizer
Polarised light is converted to p-polarization light output via after the 5th total reflective mirror, again through 1/2 wave plate, and the p-polarization light exported from 1/2 wave plate is saturating
Cross after the 3rd polarizer and inputted again after nonlinear crystal to the laser input of light-conducting arm, to be exported from the laser of light-conducting arm
End output.
Fig. 1 gives the structure chart of an example of the picosecond laser beauty instrument of miniaturization hundred of the present invention.
As shown in figure 1, in this example, hundred picosecond laser beauty instruments are minimized, including first laser rod 1, xenon lamp 2, the
Dual-laser rod 3, housing 4, adjusting Q crystal 5, outgoing mirror 6, aperture 7, the first polarizer 8, Effect of Back-Cavity Mirror 9, optical transmission unit TR,
Second polarizer 12, the first convex lens 13, the 3rd total reflective mirror 14, the 4th total reflective mirror 15, quarter wave plate 16, SBS ponds the 17, the 5th are complete
Anti- mirror 18,1/2 wave plate 19, the 3rd polarizer 20, nonlinear crystal 21 and light-conducting arm 22.Wherein, first laser rod 1 is, for example,
3mm × 100mm Nd:YAG crystal；Second laser rod 3 is, for example, 8mm × 120mm Nd:YAG crystal；Adjusting Q crystal 5 is, for example,
6mm × 10mm Nd:YAG crystal；The size of first convex lens 13 is, for example, that 25.4mm × 600mm, focal length are, for example, 500-
1500mm；The size in SBS ponds 17 is, for example, 25.4mm × 600mm, wherein equipped with weight fluorocarbon liquid medium；Nonlinear crystal 21
Size is such as used for 12mm × 12mm two frequency-doubling crystals.
Wherein, outgoing mirror 6 is partially reflecting mirror.For example, outgoing mirror 6 is 50% reflection, 50% transmission.
First laser rod 1, xenon lamp 2 and second laser rod 3 are fixed in housing 4, and first laser rod 1, xenon lamp 2 and
Dual-laser rod 3 be arranged in parallel.
In the prior art, it is typically that a laser bar and an xenon lamp are arranged in a housing, or has multiple
During laser bar, it is also that each laser bar that xenon lamp corresponding with its is located in same housing, on the one hand needs multiple xenons
Lamp, and on the other hand need multiple housings.The present invention in order to provide multistage amplification, and reach the purpose of compact conformation there is provided
The scheme of one xenon lamp and two laser bars is set in a housing.In this scenario, xenon lamp and two laser bars are parallel
Set, and xenon lamp is located at centre, as shown in figure 1, so, when xenon lamp works, it just can two laser bars generations of pumping simultaneously
Laser, and secondary amplification can be realized using a laser bar (second laser rod 3).
Along the optical transmission direction of first laser rod 1, aperture 7, first is sequentially provided with the side of first laser rod 1 inclined
Shake piece 8 and Effect of Back-Cavity Mirror 9, and adjusting Q crystal 5 and outgoing mirror 6 are sequentially provided with the opposite side of first laser rod 1.
So, after being powered up, xenon lamp 2 sends pulsed light, excites first laser rod 1 to produce laser, it is back and forth defeated
Vibrate and exported by outgoing mirror 6 between appearance 6 and Effect of Back-Cavity Mirror 9.Wherein, Effect of Back-Cavity Mirror 9 is total reflective mirror.
That is, Effect of Back-Cavity Mirror 9, the first polarizer 8, aperture 7, first laser rod 1, adjusting Q crystal 5 and outgoing mirror 6
Nanosecond laser is together constituted successively and produces light source, its spot diameter produced is 2mm, and polarization state is p-polarization light.
Change successively via the transmission direction after optical transmission unit TR after 180 degree, again from the p-polarization light of the outgoing of outgoing mirror 6
Through one end (i.e. the A ends of second laser rod 3) that second laser rod 3 is incident to after the second polarizer 12 (transmission), and from second
The other end (i.e. the B of second laser rod 3) outgoing of laser bar 3.
Thus, the amplification first of laser is realized by second laser rod 3.For example, the laser energy exported from outgoing mirror 6
It is 8ns for 10mJ, pulsewidth, energy is changed into 100mJ after second laser rod 3 (pulsewidth is still 8ns).
The first convex lens 13, the 3rd total reflective mirror 14, the 4th total reflective mirror are sequentially provided with along the outgoing light direction of second laser rod 3
15th, quarter wave plate 16 and SBS ponds 17 so that from p-polarization light (such as energy 100mJ, the arteries and veins of the other end outgoing of second laser rod 3
Wide 8ns) successively via being incident to 1/4 after the first convex lens 13, the 3rd total reflective mirror 14 (reflection) and the 4th total reflective mirror 15 (reflection)
Wave plate 16, and be converted to and focused to after circularly polarized light in SBS ponds 17 by quarter wave plate 16 so that reversely exported from SBS ponds 17
Circularly polarized light is converted to s polarised lights and successively via the 4th total reflective mirror 15 (reflection), the 3rd total reflective mirror 14 via quarter wave plate 16
The second polarizer 12 is incident to after (reflection), the first convex lens 13 and second laser rod 3, and is reflected by the second polarizer 12；Its
In, the circularly polarized light reversely exported from SBS ponds 17 is that pulsewidth is the stokes light in the range of 100ps-800ps.
So, hundred picosecond lasers are obtained by SBS ponds 17, then makes hundred picosecond laser backtrackings of acquisition by second
Laser bar 3, realizes the secondary amplification of laser.For example, after hundred picosecond lasers enter second laser rod 3, exported again from A ends from B ends,
Energy is for example changed into 300mJ.Moreover, amplification first and secondary amplification are realized by second laser rod 3, and second laser rod
3 and first laser rod 1 be fixed in a device (i.e. housing 4), it is achieved thereby that in situation about repeatedly being amplified to laser
Down so that the compact conformation of whole instrument, take up space it is smaller.
The 5th total reflective mirror 18,1/2 wave plate are sequentially provided with the transmission direction of the s polarised lights reflected from the second polarizer 12
19th, the 3rd polarizer 20 and nonlinear crystal 21 so that from the second polarizer 12 reflect s polarised lights via the 5th total reflective mirror 18
(reflection) is converted to p-polarization light output through 1/2 wave plate 19 (reflection) afterwards, again, and the p-polarization light exported from 1/2 wave plate 19 passes through the
Inputted again after nonlinear crystal 21 to the laser input of light-conducting arm 22 after three polarizers 20, with from the laser of light-conducting arm 22
Output end is exported.Nonlinear crystal 21 can be the green glow of 1064nm or so infrared laser frequency multiplication to 532nm.Wherein, it is guide-lighting
Arm 22 can have the structure similar with the light-conducting arm of existing laser cosmetic instrument, and I will not elaborate.
So, said structure of the invention by second laser rod 3 and first laser rod 1 by being fixed on a device (i.e.
Housing 4) in, by multiple speculums by the more compact of light path design, and realized and amplified twice by second laser rod 3,
Combined by features above so that the light source part of whole instrument closely, takes up space smaller, is derived from hundred picosecond lasers
High-energy output.
In addition, as shown in figure 1, adjust the polarization direction of light by the optical axis for adjusting 1/2 wave plate 19, and then have adjusted
Cross the beam energy of the 3rd polarizer 20.So, the laser energy exported from nonlinear crystal 21 for example can be in 0~300mJ
Between adjust.
Fig. 2 shows the structure chart of another example of the picosecond laser beauty instrument of miniaturization hundred of the present invention.
As shown in Fig. 2 from unlike structure shown in Fig. 1, outgoing mirror 6 is plano-concave lens 6-1, and in plano-concave lens 6-1
The second convex lens 6-2 is additionally provided between optical transmission unit TR.
Wherein, plano-concave lens 6-1 plane scribbles part reflective semitransparent film, and plano-concave lens 6-1 concave surface scribbles anti-reflection film, such as schemes
Shown in 5, so that laser vibrates and defeated by plano-concave lens 6-1 plane between plano-concave lens 6-1 plane and Effect of Back-Cavity Mirror 9
Go out, and make to dissipate and the second convex lens by plano-concave lens 6-1 concave surface from the p-polarization light of plano-concave lens 6-1 planar exit
6-2 turns into directional light after assembling, and realization is expanded.
Expanded to realize, conventional art generally requires to increase the combination of a concavees lens and convex lens, that is to say, that quite
In 2 lens elements of increase between outgoing mirror 6 and optical transmission unit TR, and lens element must consider its focal length to design
Light path so that whole light path is elongated, whole apparatus structure becomes big.In contrast, as shown in Figure 2 and Figure 5 of the invention small-sized
Changing hundred picosecond laser beauty instruments then only needs outgoing mirror 6 replacing with plano-concave lens 6-1, only need to be further added by a convex lens,
One side element compared with the prior art for tail off, another aspect light path shortens so that the present invention tie compared with the prior art
Structure is more compact.
The principle and work(also realized in Fig. 2 with Fig. 1 identical light path parts, its principle and function with structure shown in Fig. 1
Can be similar, repeat no more here.
In addition, according to an implementation (as depicted in figs. 1 and 2), optical transmission unit TR includes the He of the first total reflective mirror 10
Second total reflective mirror 11, wherein, reflected from the p-polarization light of the outgoing of outgoing mirror 6 through the reflection of the first total reflective mirror 10 and the second total reflective mirror 11
The transmission direction of the relative p-polarization light from the outgoing of outgoing mirror 6 of optical transmission direction afterwards changes 180 degree, reenters and is incident upon the second polarization
Piece 12.
It should be noted that, although showing that optical transmission unit TR includes the He of the first total reflective mirror 10 in Fig. 1 and Fig. 2 figure
The example of second total reflective mirror 11, but optical transmission unit TR structure is not limited to this, for example, can also be as shown in Figure 3 or Figure 4
Right angle prism.As shown in Figure 3 or Figure 4, according to another implementation, optical transmission unit TR can also include right-angle prismatic
Mirror, wherein, from the p-polarization light vertical incidence of the outgoing of outgoing mirror 6 to the base of the right angle prism, successively by the right angle prism
Two right-angle sides reflection after, after the base vertical outgoing of the right angle prism, reenter and be incident upon the second polarizer 12.
Although describing the present invention according to the embodiment of limited quantity, above description, the art are benefited from
It is interior it is clear for the skilled person that in the scope of the present invention thus described, it can be envisaged that other embodiments.Additionally, it should be noted that
The language that is used in this specification primarily to readable and teaching purpose and select, rather than in order to explain or limit
Determine subject of the present invention and select.Therefore, in the case of without departing from the scope and spirit of the appended claims, for this
Many modifications and changes will be apparent from for the those of ordinary skill of technical field.For the scope of the present invention, to this
The done disclosure of invention is illustrative and not restrictive, and it is intended that the scope of the present invention be defined by the claims appended hereto.
Claims (5)
1. minimize hundred picosecond laser beauty instruments, it is characterised in that the picosecond laser beauty instrument of miniaturization hundred includes first and swashed
It is optical wand (1), xenon lamp (2), second laser rod (3), housing (4), adjusting Q crystal (5), outgoing mirror (6), aperture (7), first inclined
Shake piece (8), Effect of Back-Cavity Mirror (9), optical transmission unit (TR), the second polarizer (12), the first convex lens (13), the 3rd total reflective mirror
(14), the 4th total reflective mirror (15), quarter wave plate (16), SBS ponds (17), the 5th total reflective mirror (18), 1/2 wave plate (19), the 3rd polarization
Piece (20), nonlinear crystal (21) and light-conducting arm (22)；
The outgoing mirror (6) is partially reflecting mirror；
The first laser rod (1), the xenon lamp (2) and the second laser rod (3) are fixed in the housing (4), and
The first laser rod (1), the xenon lamp (2) and the second laser rod (3) be arranged in parallel；
Along the optical transmission direction of the first laser rod (1), the aperture is sequentially provided with the side of the first laser rod (1)
Diaphragm (7), first polarizer (8) and the Effect of Back-Cavity Mirror (9), and set successively in the opposite side of the first laser rod (1)
There are the adjusting Q crystal (5) and the outgoing mirror (6) so that laser shakes between the outgoing mirror (6) and the Effect of Back-Cavity Mirror (9)
Swing and exported by the outgoing mirror (6), and make the p-polarization light from the outgoing mirror (6) outgoing successively via the optical transport
Transmission direction after unit (TR) changes after 180 degree, pass through second polarizer (12) again after be incident to the second laser
One end of rod (3), and from the other end outgoing of the second laser rod (3)；
First convex lens (13), the 3rd total reflective mirror are sequentially provided with along the outgoing light direction of the second laser rod (3)
(14), the 4th total reflective mirror (15), the quarter wave plate (16) and SBS ponds (17) so that from the second laser rod (3)
The p-polarization light of the other end outgoing is successively via first convex lens (13), the 3rd total reflective mirror (14) and described
The quarter wave plate (16) is incident to after four total reflective mirrors (15), and focusing after circularly polarized light is converted to by the quarter wave plate (16)
In to the SBS ponds (17) so that the circularly polarized light reversely exported from the SBS ponds (17) turns via the quarter wave plate (16)
It is changed to s polarised lights and successively via the 4th total reflective mirror (15), the 3rd total reflective mirror (14), first convex lens (13)
Be incident to second polarizer (12) after the second laser rod (3), and reflected by second polarizer (12)；Its
In, the circularly polarized light reversely exported from the SBS ponds (17) is that pulsewidth is the stokes light in the range of 100ps-800ps；
From second polarizer (12) reflect s polarised lights transmission direction on be sequentially provided with the 5th total reflective mirror (18),
1/2 wave plate (19), the 3rd polarizer (20) and nonlinear crystal (21), so that anti-from second polarizer (12)
The s polarised lights penetrated are converted to p-polarization light output through 1/2 wave plate (19) afterwards, again via the 5th total reflective mirror (18), from institute
The p-polarization light for stating 1/2 wave plate (19) output is passed through after the 3rd polarizer (20) again after the nonlinear crystal (21)
Input to the laser input of the light-conducting arm (22), to be exported from the laser output of the light-conducting arm (22).
2. hundred picosecond laser beauty instruments of miniaturization according to claim 1, it is characterised in that the outgoing mirror (6) is
50% reflection, 50% diaphotoscope.
3. hundred picosecond laser beauty instruments of miniaturization according to claim 1, it is characterised in that the outgoing mirror (6) includes
Plano-concave lens (6-1), and provided with the second convex lens (6- between the plano-concave lens (6-1) and the optical transmission unit (TR)
2)；
Wherein, the plane of the plano-concave lens (6-1) scribbles part reflective semitransparent film, and the concave surface of the plano-concave lens (6-1) scribbles increasing
Permeable membrane, so that laser vibrates and saturating by the plano-concave between the plane and the Effect of Back-Cavity Mirror (9) of the plano-concave lens (6-1)
The plane output of mirror (6-1), and make to pass through the plano-concave lens from the p-polarization light of the planar exit of the plano-concave lens (6-1)
The concave surface diverging of (6-1) and second convex lens (6-2) turn into directional light after assembling, and realization is expanded.
4. hundred picosecond laser beauty instruments of miniaturization according to claim 1, it is characterised in that the optical transmission unit (TR)
Including the first total reflective mirror (10) and the second total reflective mirror (11), wherein, the p-polarization light from the outgoing mirror (6) outgoing is through described
The optical transmission direction that one total reflective mirror (10) is reflected after being reflected with second total reflective mirror (11) is relative from the outgoing mirror (6) outgoing
P-polarization light transmission direction change 180 degree, reenter and be incident upon second polarizer (12).
5. hundred picosecond laser beauty instruments of miniaturization according to claim 1, it is characterised in that the optical transmission unit (TR)
Including right angle prism, wherein, the p-polarization light vertical incidence from the outgoing mirror (6) outgoing to the base of the right angle prism,
Successively by after two right-angle sides reflection of the right angle prism, after the base vertical outgoing of the right angle prism, reenter and be incident upon
Second polarizer (12).
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| CN201710408352.4A CN107069414B (en) | 2017-06-02 | 2017-06-02 | Small hundred picosecond laser beauty instrument |
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| CN107069414B CN107069414B (en) | 2023-08-25 |
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| CN107834350A (en) * | 2017-12-18 | 2018-03-23 | 中国科学院合肥物质科学研究院 | A kind of alexandrite medical laser of multi-mode |
| CN113300200A (en) * | 2021-04-07 | 2021-08-24 | 清华大学 | Pulse laser |
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|---|---|
| CN107069414B (en) | 2023-08-25 |
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