CN108767651A - A kind of medical Double Pulses Q-Switch Laser of achievable zlasing mode switching - Google Patents
A kind of medical Double Pulses Q-Switch Laser of achievable zlasing mode switching Download PDFInfo
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- CN108767651A CN108767651A CN201810898903.4A CN201810898903A CN108767651A CN 108767651 A CN108767651 A CN 108767651A CN 201810898903 A CN201810898903 A CN 201810898903A CN 108767651 A CN108767651 A CN 108767651A
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 238000005086 pumping Methods 0.000 abstract description 7
- 238000011282 treatment Methods 0.000 description 14
- 208000017520 skin disease Diseases 0.000 description 9
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- 208000007098 intradermal nevus Diseases 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
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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
- H01S3/1123—Q-switching
- H01S3/115—Q-switching using intracavity electro-optic devices
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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
- A61B18/203—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 applying laser energy to the outside of the body
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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
- H01S3/105—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling the mutual position or the reflecting properties of the reflectors of the cavity, e.g. by controlling the cavity length
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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
- H01S3/106—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling devices placed within the cavity
- H01S3/108—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling devices placed within the cavity using non-linear optical devices, e.g. exhibiting Brillouin or Raman scattering
- H01S3/109—Frequency multiplication, e.g. harmonic generation
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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
- A61B2018/00315—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for treatment of particular body parts
- A61B2018/00452—Skin
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Abstract
The present invention discloses a kind of medical Double Pulses Q-Switch Laser of achievable zlasing mode switching,Including the laser resonator being sequentially arranged,Laser chenge-over device,Laser amplifier chamber,Two frequency doubling system of laser,Laser matches mirror,Laser conducting device,Electro-optical Q-switch for controlling laser output and the prism rotary laser mode switching system for laser resonator output flat-head type and Gaussian are located at laser resonance intracavitary,Laser resonator and laser amplifier chamber are the integrated pump module of oscillation amplification,Prism rotary laser mode switching system includes prism,Total reflective mirror is homogenized along the concave surface that light transmission direction is located on the left of prism,Concave mirror on the right side of prism and the rotary driving source positioned at prism rear completion prism driving progress zlasing mode switching,Electro-optical Q-switch realizes that the adjustment of laser double-pulse interval is exported with energy within a pumping cycle by opening twice.It is simple and compact for structure, stability is good, can fast free switched laser pattern and realize pulse-pair output.
Description
Technical field
The invention belongs to laser technology fields, are related to a kind of medical dipulse Q-switch laser of achievable zlasing mode switching
Device.
Background technology
With the development of laser technology, a brand-new application branch of learning --- laser medicine gradually forms, the uniqueness of laser
Advantage solves traditional medicine indeterminable many problems in basic research and clinical application, causes domestic and international medicine
The attention on boundary.
In medical skin beauty treatment fields, Q-switch laser tatoo, spot, mole, in the treatments such as laser photorejuvenation using more and more,
And the significant effect in the overwhelming majority treats.Single laser output mode to the treatment of certain a kind of pigmentosa skin disease all
It is largely effective, for example, flat-head type Mode for Laser is suitble to treat the pigmentosa skin disease of shallow-layer (such as spot and mole)；Gaussian like modes
Laser is then more suitable for treating the pigmentosa skin disease of deep layer, such as the intradermal nevus such as complex nevus.
Traditional single-pulse laser energy in treatment is excessive, causes skin damage good around larger；If primary hair
Penetrating two laser pulses (100~200 μ s of pulse spacing) allows the effect of light seismic wave that can accumulate superposition, can greatly reduce to just
The injury of normal skin histology, increases safety and the comfort for the treatment of.
But medical Q-switch laser therapeutic equipment currently on the market generally uses single laser output mode, exports two kinds of laser
Pattern (flat-top and Gauss) needs two instruments that could realize that system integration difficulty is big respectively.It cannot lead in a laser
It crosses certain mechanism and quickly, freely realizes that both of which switching is used for treatment-related skin disease；And it is single to be typically only capable to transmitting
A laser pulse；User cost is not only increased, therapeutic effect is also not satisfactory.
Invention content
The purpose of the present invention is to overcome the above shortcomings and to provide a kind of medical dipulses of achievable zlasing mode switching
Q-switched laser, the laser have simple and compact for structure, flat-top zlasing mode and gauss laser pattern can free switching, two kinds
Optical maser wavelength also can unrestricted choice switching and can realize laser double-pulse output the characteristics of, to spot, striae of pregnancy, too field spot etc.
The treatment of mole, whelk scar, pore refining, tiny wrinkle of skin laser photorejuvenation etc. has remarkable result.And it can basis
The difference (such as junctional nevus, intradermal nevus and compound nevus) of the pigmentosa skin disease depth and different treatments need, fast free
Selection laser output mode more effectively treated with optical maser wavelength, be patient with great convenience.
The purpose of the present invention is achieved through the following technical solutions：
A kind of medical Double Pulses Q-Switch Laser of achievable zlasing mode switching, which is characterized in that including what is be sequentially arranged
For generating the laser resonator of laser, laser chenge-over device, the laser amplifier chamber for amplifying laser, two frequency multiplication system of laser
System, laser matching mirror, laser conducting device, electro-optical Q-switch for controlling laser output and flat for laser resonator output
The prism rotary laser mode switching system of top-type and Gaussian is located at the laser resonance intracavitary, the laser resonator and swashs
Light amplification chamber is the integrated pump module of oscillation amplification, and the prism rotary laser mode switching system includes prism, passed along light
Defeated direction is located at concave mirror and the position that the concave surface on the left of prism homogenizes total reflective mirror, is located at along light transmission direction on the right side of prism
The rotary driving source that the prism driving carries out zlasing mode switching is completed in prism rear, the electro-optical Q-switch is taken out at one
Realize that the adjustment of laser double-pulse interval is exported with energy by opening twice in the fortune period.
Further include being set to the outgoing mirror of oscillation pump module side in the integrated pump module of oscillation amplification, and set successively
The polariscope set, quarter-wave plate, the electro-optical Q-switch are described defeated between the polariscope and quarter-wave plate
It appearance and polariscope, quarter-wave plate, electro-optical Q-switch and is placed in the right-angle prism rotary laser mode switching system
The concave surface homogenizes the light path coaxial that total reflective mirror or the concave mirror are constituted.
The integrated pump module of the oscillation amplification includes being located at xenon flash lamp among the pump module and positioned at polarization
Oscillation Nd between mirror and outgoing mirror：YAG laser crystal, and positioned at the laser chenge-over device and two frequency doubling system of laser it
Between amplification Nd：YAG laser crystal.
The laser chenge-over device includes positioned at the one 45 degree of speculum of outgoing mirror side, positioned at along light transmission direction
The 2nd 45 degree of speculum after upper one 45 degree of speculum and the 3rd 45 degree of speculum.
Two frequency doubling system of the laser by positioned at amplification laser crystal after set gradually frequency-doubling crystal, the first short-pass filter
Wave plate and the second short-pass filter plate composition.
The concave surface being placed in prism rotary laser mode switching system homogenizes total reflective mirror or concave mirror passes through institute
The rotary driving source driving right-angle prism rotation stated turns to, and realizes output 1064nm flat-head types and 1064nm Gaussian laser patterns
Laser resonator between switching.
The rotary driving source is high-precision stepper motor.
Switching of two frequency doubling system of the laser by linear motor or servos control in the optical path, realize 1064nm with
532nm wavelength converts.
The laser is 1064nm laser, and the outgoing mirror is plane mirror；The electro-optical Q-switch two sides is coated with 1064nm
Laser anti-reflection film；The polariscope is film polarizer；The quarter-wave plate is quartz wave-plate；The concave surface homogenizes entirely
The concave surface of anti-mirror and concave mirror is coated with 1064nm and is all-trans film；The one 45 degree of speculum and the 2nd 45 degree of speculum table
Face is coated with 1064nm laser high-reflecting films；The laser matching mirror is lenticular lens, and two sides is coated with 1064nm anti-reflection films；It is described
3rd 45 degree of speculum and the 4th 45 degree of mirror surface are coated with 1064nm and 532nm laser high-reflecting films；Two frequency-doubling crystal
Two sides is coated with 1064nm and 532nm laser anti-reflection films.
The beneficial effects of the present invention are：The zlasing mode that total reflective mirror and concave mirror composition are homogenized using concave surface is free
Switching system can easily and fast realize the switching of flat-head type and Gaussian 1064nm zlasing modes, and laser under both of which
Device is stable, admirably realizes the treatment to pigmented dermatosis, and laser double-pulse mould is being switched to by control system
Under formula, the injury to surrounding skin tissue can be reduced, increases safety and the comfort for the treatment of.
Description of the drawings
Fig. 1 is the schematic diagram of the medical Q-switched laser of the zlasing mode free switching of the present invention.
Fig. 2 is that the medical Q-switched laser of the present invention exports the schematic diagram of 1064nm flat-top zlasing modes.
Fig. 3 is that the medical Q-switched laser of the present invention exports the schematic diagram of 532nm flat-top zlasing modes.
Fig. 4 is that the medical Q-switched laser of the present invention exports the schematic diagram of 1064nm gauss laser patterns.
Fig. 5 is that the medical Q-switched laser of the present invention exports the schematic diagram of 532nm gauss laser patterns.
Fig. 6 is the schematic diagram of the medical Q-switched laser laser double-pulse course of work of the present invention.
It is denoted as in attached drawing：1- prism rotary laser mode switching systems, 2- quarter-wave plates, 3- electro-optical Q-switch,
4- polariscopes, the integrated pump module of 5- oscillation amplifications, 6- oscillator stage laser bars, 7- outgoing mirrors, the one 45 degree of speculum of 8-, 9- the
2 45 degree of speculums, 10- xenon flash lamps, 11- amplifying stage laser bars, two frequency doubling system of 12- laser, 13- laser match mirror, 14-
3rd 45 degree of speculum.
Specific implementation mode
The invention will be further described with reference to the accompanying drawings and examples.
As shown in fig.1, the present invention provides a kind of medical Double Pulses Q-Switch Laser of achievable zlasing mode switching, packet
Include the laser resonator for generating 1064nm laser being sequentially arranged, laser chenge-over device, for amplifying 1064nm laser
1064nm laser amplifiers chamber, two frequency doubling system 12 of laser, laser matching mirror 13, laser conducting device, for controlling laser output
Electro-optical Q-switch 3 and for laser resonator export flat-head type and Gaussian 112 rotary laser mode switching system 1 of prism
Positioned at laser resonance intracavitary, laser resonator and laser amplifier chamber are the integrated pump module 5 of oscillation amplification, and the rotation of prism 112 swashs
The concave surface that optical mode switching system 1 includes prism 112, is located at along light transmission direction on the left of prism 112 homogenize total reflective mirror 114,
It is located at the concave mirror 111 on 112 right side of prism along light transmission direction and completes prism 112 positioned at 112 rear of prism and drives
The rotary driving source 113 of zlasing mode switching is carried out, electro-optical Q-switch 3 swashs within a pumping cycle by opening realization twice
Light double-pulsed time is adjusted to be exported with energy, and prism 112 is right-angle prism.
Further, it can be achieved that the medical Double Pulses Q-Switch Laser of zlasing mode switching further includes being set to oscillation amplification
The outgoing mirror 7 of pump module side is vibrated in integrated pump module 5, and the polariscope 4 and quarter-wave plate set gradually
2, electro-optical Q-switch 3 is between polariscope 4 and quarter-wave plate 2, outgoing mirror 7 and polariscope 4, quarter-wave plate 2, electricity
Light Q-switch 3 and the concave surface being placed in 112 rotary laser mode switching system 1 of prism homogenize total reflective mirror 114 or concave mirror
111 light path coaxials constituted, oscillation amplification one pump module 5 are all made of single branch xenon flash lamp 10 and are pumped, oscillation amplification
Integrated pump module 5 can also be include be located at pump module among xenon flash lamp 10 and between polariscope and outgoing mirror
Oscillation Nd：YAG laser crystal as oscillator stage laser bar 6, and positioned at laser chenge-over device and two frequency doubling system of laser it
Between amplification Nd：YAG laser crystal is as amplifying stage laser bar 11.
Further, laser chenge-over device includes positioned at the one 45 degree of speculum 8 of outgoing mirror side and positioned at along light
The 2nd 45 degree of speculum 9 and the 3rd 45 degree of speculum 14 in transmission direction after the one 45 degree of speculum 8.
Further, two frequency doubling system 12 of laser by set gradually after amplification laser crystal frequency-doubling crystal 121, the
One short-pass filter plate 122 and the second short-pass filter plate 123 composition.
The concave surface being placed in prism rotary laser mode switching system homogenizes total reflective mirror or concave mirror and is driven by rotating
Dynamic source driving right-angle prism rotation turns to, and realizes the laser resonance of output 1064nm flat-head types and 1064nm Gaussian laser patterns
Switching between chamber.
1064nm and 532nm is realized in switching of two frequency doubling system of laser by linear motor or servos control in the optical path
Wavelength convert.
Laser is 1064nm laser, and outgoing mirror is plane mirror；Electro-optical Q-switch two sides is coated with 1064nm laser anti-reflection films；
Polariscope is film polarizer；Quarter-wave plate is quartz wave-plate；Concave surface homogenizes total reflective mirror and the concave surface of concave mirror is equal
1064nm is coated with to be all-trans film；One 45 degree of speculum and the 2nd 45 degree of mirror surface are coated with 1064nm laser high-reflecting films；Laser
Matching mirror is lenticular lens, and two sides is coated with 1064nm anti-reflection films；3rd 45 degree of speculum and the 4th 45 degree of mirror surface
It is coated with 1064nm and 532nm laser high-reflecting films；Two frequency-doubling crystal two sides are coated with 1064nm and 532nm laser anti-reflection films.
Laser double-pulse output is realized by an electro-optical Q-switch 3, passes through control within 10 pumping cycle of xenon flash lamp
Electro-optical Q-switch 3 is opened twice, is accurately controlled the electric discharge pulsewidth of xenon flash lamp 10 and 3 trigger signal sequential relationship of electro-optical Q-switch, is arrived
It is exported up to the time interval for accurately controlling laser double-pulse with energy.
Outgoing mirror 7 homogenizes total reflective mirror 114 or concave surface with the concave surface being placed in 112 rotary laser mode switching system 1 of prism
Total reflective mirror 111 constitutes 1064nm oscillator stage laser resonators.
The concave surface being placed in 112 rotary laser mode switching system 1 of prism homogenizes total reflective mirror 114 or concave mirror 111
Rotary driving source 113 by being loaded with right-angle prism 112 carries out rotation driving, which can carry out counterclockwise 90
Degree or 90 degree of rotations clockwise, realize the output switching of flat-head type or Gaussian 1064nm zlasing modes.
Rotary driving source 113 is high-precision motor or hydraulic motor.
Switching of two frequency doubling system 12 of laser by linear motor or steering engine (not marking) control in the optical path, realizes 1064nm
With 532nm wavelength converts.
Preferably, outgoing mirror 7 of the present invention is plane mirror, size φ 20 × 3mm, 1064nm laser transmittances are 90%；
Shown in 3 two sides of electro-optical Q-switch be coated with 1064nm laser anti-reflection films, using KD*Electro-optical Q-switch of the P crystal as the present invention
3, clear aperature is φ 8mm；Polariscope 4 is film polarizer, and size 20 × 3mm of φ are in that Brewster angle is placed in the optical path；
Quarter-wave plate 2 is quartz wave-plate, and size is 20 × 3mm of φ；Concave surface homogenizes total reflective mirror 114, size 15 × 3mm of φ, curvature
Radius R-2000mm, concave surface is coated with 1064nm high-reflecting films and concave surface is etched with a certain number of lenticules for homogenizing laser light
Beam；Concave mirror 111, size are 15 × 3mm of φ, and radius of curvature R -2000mm, concave surface is coated with 1064nm high-reflecting films；Arteries and veins
It is 8 × 120mm of φ to rush 10 size of xenon lamp；6 size of oscillator stage laser bar is 7 × 130mm of φ, doping concentration 1.0%at；Amplifying stage
11 size of laser bar is 8 × 130mm of φ, doping concentration 1.1%at；One 45 degree of speculum 8 and the 2nd 45 degree of 9 surface of speculum
1064nm laser high-reflecting films are coated with, size is 25 × 3mm of φ, and the back side carries out feather plucking processing；It is plano-convex that laser, which matches mirror 12,
Type lens, two sides are coated with 1064nm anti-reflection films, a diameter of 20mm, radius of curvature R 1m；3rd 45 degree of 14 surface of speculum is coated with
1064nm and 532nm laser high-reflecting films, size are 25 × 3mm of φ, and the back side carries out feather plucking processing；Two frequency-doubling crystal of laser
121 two sides are coated with 1064nm and 532nm laser anti-reflection films, using the KTP of II type-Ⅱphase matching as two frequency-doubling crystals 121,
8 × 8 × 5mm of size matches angle, θ=90 °,First short-pass filter plate 122 and the second short-pass filter plate
123 be K9 filter plates, 20 × 3mm of size φ.
The present invention specific implementation process be：Shown in Fig. 1, by each component of laser, installation is complete, and it is cold to connect cycle
But water, Laser Power Devices and control system.Under the assistance of instruction laser (being not marked in figure), select a kind of total reflective mirror to laser
Coarse adjustment and fine debugging are carried out, makes laser in optimum state under this condition；Again under another total reflective mirror, complete above-mentioned
Step.Then (as shown in Figure 2-5) is switched over to both of which, in the initial state, the rotation for being loaded with right-angle prism 112 is driven
Dynamic source 113 rotates clockwise 90 degree, is switched to gauss laser output mode, is rotated by 90 ° and is switched to counterclockwise under current state
Flat-top laser output mode checks two kinds of laser output modes of laser, and is carefully adjusted to the parameter of rotary driving source 113
It is whole, until under two kinds of zlasing modes switchings, being best output mode.Then good each optics member is debugged successively along light path
Part, until 1064nm laser enters light-conducting arm through laser conducting device (i.e. the 3rd 45 degree of speculum 14).When in two kinds of modes of laser
When being respectively necessary for 1064nm laser switching to 532nm under formula, linear stepping motor or steering engine (not indicating) driving two can be passed through
Frequency doubling system 12 enters in light path, completes the switching (as shown in figs. 3 and 5) to Q-switch laser 1064nm and 532nm wavelength.
It should be noted that above-mentioned specific implementation process carries out under single laser pulse pattern.As shown in fig. 6, wanting
Realize that laser double-pulse output is needed accurate debugging laser arteries and veins under laser works pattern switching to laser double-pulse pattern
Rush the sequential relationship that the electric discharge pulsewidth of xenon lamp 10 is delayed with electro-optical Q-switch 3；And relevant parameter is set, laser double-pulse of the invention
The electric discharge pulsewidth in 10 1 pumping cycles of xenon flash lamp under pattern is 410 μ s, and the Q values of resonant cavity are modulated onto a certain height
It is worth, moment opens Q-switch 3, and intracavitary forms laser generation, sends out a Q impulse, adjusts on Q high pressures and pumping current for the first time
It is 230 μ s to rise along delay.Then pass through one section of adjustable time within first pumping pulse period, be again turned on Q again
Switch 3, at this time intracavitary form laser generation again, send out second Q impulse, second adjust Q high pressures on pumping current
It is 410 μ s to rise along delay.Time interval between two laser pulses is that 180 μ s can maximum output when injecting electric energy 65J
1064nm laser double-pulses energy 1600mJ, single pulse energy 800mJ.
A kind of the advantages of medical Double Pulses Q-Switch Laser of achievable zlasing mode switching provided by the invention, is：It adopts
Simple and compact for structure with the structure of level-one oscillation plus level-one amplification, laser output energy is high, stability is good, swashs with flat-head type
Optical mode and Gaussian laser pattern can free switching have simultaneously single laser pulse and laser double-pulse can free switching spy
Point, the present invention coordinate laser guide arm and laser therapeutic head can be according to conversion output mode of laser the characteristics of pigmentosa skin disease
Formula meets the needs of different treatments from optical maser wavelength, while it is pigmentosa effectively to take into account the pigmentosa skin disease of shallow-layer, deep layer
The treatment of skin disease and dna exogenous pigment skin problem is bringing great convenience property of patient and safety.
Specific work process is：Laser resonator is along light transmission direction by prism rotary laser mode switching system 1
Concave mirror 111 or concave surface homogenize total reflective mirror 114, quarter-wave plate 2, electro-optical Q-switch 3, polariscope 4, oscillation amplification
Integrated pump module 5, oscillating laser crystal 6, outgoing mirror 7 and xenon flash lamp 10 form.When the rotation for being loaded with right-angle prism 112
After driving source 113 makes right-angle prism rotate clockwise 90 degree, the total reflective mirror of laser resonator is made of concave mirror 111, is swashed
It after photosystem connects control system and power-supply system, can discharge xenon flash lamp 10, it is absorbable to form oscillating laser crystal 6
Light-pulse generator, oscillating laser crystal 10 generate Gaussian 1064nm laser, 1064nm laser concave mirror 111 and output
Oscillation amplification is constantly carried out between mirror 7, finally after to electro-optical Q-switch plus Q voltages are adjusted, in polariscope 4,3 He of electro-optical Q-switch
1064nm adjustable Q laser pulses are generated under 2 collective effect of quarter-wave plate.
1064nm laser imports by 8 the 1st degree of speculums 8 and the 2nd 45 degree of speculum 9 and amplifies integrated pump by oscillation
The amplifying stage module that Pu module 5, xenon flash lamp 10 and amplification laser crystal 11 form, carries out under the action of xenon flash lamp
1064nm pulsed laser energies amplify.
After the rotary driving source 113 for being loaded with right-angle prism 112 makes right-angle prism be rotated by 90 ° counterclockwise, laser resonator
Total reflective mirror total reflective mirror 114 homogenized by concave surface constitute, generate the process and the above process of flat-head type 1064nm laser and amplification
Unanimously.
When being respectively necessary for 1064nm laser switching to 532nm under two kinds of zlasing modes, straight line stepping electricity can be passed through
Machine or steering engine (not indicating) drive two frequency doubling systems 12 to enter in light path, complete to Q-switch laser 1064nm and 532nm wavelength
Switching.The effect of laser matching mirror 13 is that shrink beam will be carried out by its laser beam, to meet post laser light-conducting arm (figure
In do not indicate) transmission and treatment needs, laser after the 3rd 45 degree of speculum by will be introduced as transmission laser system
Laser guide arm carries out end treatment application.
Described in above example is a kind of preferred embodiment of the present invention, it is noted that for skill belonging to the present invention
For the those of ordinary skill in art field, without departing from the principle of the present invention, some improvements and modifications can also be made,
These improvement and modification also can be considered protection scope of the present invention.
Claims (9)
1. a kind of medical Double Pulses Q-Switch Laser of achievable zlasing mode switching, which is characterized in that including the use being sequentially arranged
In generate the laser resonator of laser, laser chenge-over device, the laser amplifier chamber for amplifying laser, two frequency doubling system of laser,
Laser matches mirror, laser conducting device, for controlling the electro-optical Q-switch and be used for laser resonator output flat-head type that laser exports
It is located at the laser resonance intracavitary with the prism rotary laser mode switching system of Gaussian, the laser resonator and laser are put
Big chamber is the integrated pump module of oscillation amplification, and the prism rotary laser mode switching system includes prism, along light transmission side
Total reflective mirror is homogenized to the concave surface on the left of prism, is located at the concave mirror on the right side of prism along light transmission direction and is located at rib
The rotary driving source that the right-angle prism driving carries out zlasing mode switching is completed at mirror rear, and the electro-optical Q-switch is taken out at one
Realize that the adjustment of laser double-pulse interval is exported with energy by opening twice in the fortune period.
2. a kind of medical Double Pulses Q-Switch Laser of achievable zlasing mode switching according to claim 1, feature exist
In further including being set to the outgoing mirror of oscillation pump module side in the integrated pump module of oscillation amplification, and set gradually
Polariscope, quarter-wave plate, the electro-optical Q-switch is between the polariscope and quarter-wave plate, the outgoing mirror
With polariscope, quarter-wave plate, electro-optical Q-switch and described in being placed in the right-angle prism rotary laser mode switching system
Concave surface homogenizes the light path coaxial that total reflective mirror or the concave mirror are constituted.
3. a kind of medical Double Pulses Q-Switch Laser of achievable zlasing mode switching according to claim 1, feature exist
In, the integrated pump module of the oscillation amplification include be located at xenon flash lamp among the pump module and positioned at polariscope with it is defeated
Oscillation Nd between appearance：YAG laser crystal, and putting between two frequency doubling system of the laser chenge-over device and laser
Big Nd：YAG laser crystal.
4. a kind of medical Double Pulses Q-Switch Laser of achievable zlasing mode switching according to claim 1, feature exist
In, the laser chenge-over device include positioned at the one 45 degree speculum of outgoing mirror side, positioned in light transmission direction the
The 2nd 45 degree of speculum after one 45 degree of speculums and the 3rd 45 degree of speculum.
5. a kind of medical Double Pulses Q-Switch Laser of achievable zlasing mode switching according to claim 1, feature exist
In, two frequency doubling system of the laser by the frequency-doubling crystal, the first short-pass filter plate that are set gradually after amplification laser crystal
It is formed with the second short-pass filter plate.
6. a kind of medical Double Pulses Q-Switch Laser of achievable zlasing mode switching according to claim 1, feature exist
In the concave surface being placed in prism rotary laser mode switching system homogenizes total reflective mirror or concave mirror and passes through the rotation
Turn driving source driving right-angle prism rotation to turn to, realizes the laser of output 1064nm flat-head types and 1064nm Gaussian laser patterns
Switching between resonant cavity.
7. a kind of medical Double Pulses Q-Switch Laser of achievable zlasing mode switching according to claim 6, feature exist
In the rotary driving source is high-precision stepper motor.
8. a kind of medical Double Pulses Q-Switch Laser of achievable zlasing mode switching according to claim 5, feature exist
In 1064nm and 532nm waves are realized in switching of two frequency doubling system of the laser by linear motor or servos control in the optical path
Long conversion.
9. according to a kind of medical Double Pulses Q-Switch Laser of any achievable zlasing mode switchings of claim 1-8,
It is characterized in that, the laser is 1064nm laser, and the outgoing mirror is plane mirror；The electro-optical Q-switch two sides is coated with
1064nm laser anti-reflection films；The polariscope is film polarizer；The quarter-wave plate is quartz wave-plate；The concave surface
The concave surface for homogenizing total reflective mirror and concave mirror is coated with 1064nm and is all-trans film；The one 45 degree of speculum and the 2nd 45 degree are anti-
It penetrates mirror surface and is coated with 1064nm laser high-reflecting films；The laser matching mirror is lenticular lens, and it is anti-reflection that two sides is coated with 1064nm
Film；The 3rd 45 degree of speculum and the 4th 45 degree of mirror surface are coated with 1064nm and 532nm laser high-reflecting films；Described two times
Frequency crystal two sides is coated with 1064nm and 532nm laser anti-reflection films.
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