CN110492348A - A kind of Super pulse solid-state thulium laser - Google Patents
A kind of Super pulse solid-state thulium laser Download PDFInfo
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- CN110492348A CN110492348A CN201910687021.8A CN201910687021A CN110492348A CN 110492348 A CN110492348 A CN 110492348A CN 201910687021 A CN201910687021 A CN 201910687021A CN 110492348 A CN110492348 A CN 110492348A
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- thulium
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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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- 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
- A61B18/22—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 the beam being directed along or through a flexible conduit, e.g. an optical fibre; Couplings or hand-pieces therefor
- A61B18/26—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 the beam being directed along or through a flexible conduit, e.g. an optical fibre; Couplings or hand-pieces therefor for producing a shock wave, e.g. laser lithotripsy
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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
- H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
- H01S3/0941—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light of a laser diode
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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
- H01S3/117—Q-switching using intracavity acousto-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
- A61B2018/2065—Multiwave; Wavelength mixing, e.g. using four or more wavelengths
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Health & Medical Sciences (AREA)
- Optics & Photonics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Otolaryngology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
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- Plasma & Fusion (AREA)
- Laser Surgery Devices (AREA)
Abstract
A kind of Super pulse solid-state thulium laser, including resonant cavity, the resonant cavity is closed at one end, and the other end is communicated with coupler；High reflective mirror, acousto-optic Q modulation device, thulium stick, high lens and focus lamp are coaxially fixed in resonant cavity, wherein the LD semiconductor palladium item of oriented thulium stick projection source is installed in the periphery of thulium stick, and thulium stick and LD semiconductor palladium item are respectively connected with power supply；Acousto-optic Q modulation device is installed in one end of thulium stick, and the other end of thulium stick is equipped with high lens, focus lamp and coupler；The other end of acousto-optic Q modulation device installs high reflective mirror.The laser emits light source by thulium stick and LD semiconductor palladium item jointly, high tens times of the laser of specific power output is formed by resonant cavity amplification light source, is substantially better than pulse holmium laser in the prior art in terms of raising pulse frequency, peak value of pulse and to the absorptivity of tissue.
Description
Technical field
The present invention relates to the field of medical instrument technology, are related to a kind of laser operation equipment, especially a kind of Super pulse solid-state
Thulium laser.
Background technique
Laser has a wide range of applications in fields such as national defence, medical treatment and biological studies, especially laser cutting and
The medical instruments fields such as rubble are widely used；Current laser mostly uses pulse Bladder stone to carry out surgical cut machine rubble, but
The maximum frequency for being pulse Bladder stone is only 80HZ, peak value of pulse and more low to the absorptivity of tissue, this will result directly in:
1, pulse frequency is low, extends operating time；2, pulse peak power is low causes hard or bulk calculus not crush completely；3, right
The absorptivity of tissue is low to cause power consumption to increase, and power consumption is big and surgical effect is bad.
Publication is retrieved, discovery and the maximally related following patent document of the technical program:
1940nm thulium-doped all-fiber laser device and medical device (CN109950781A) based on the laser disclose one
Kind 1940nm thulium-doped all-fiber laser device and the medical device based on the laser, are related to optical fiber field of medical technology, to solve
The problem that mum wavelength effect is poor, output power is low, volume is big, stability is poor and thermal diffusivity is bad of existing apparatus 2, laser include
Semiconductor laser, bundling device, Gao Fanguang grid, two sections of thulium doped fibers, low reflective grid, reversed bundling device, backward pumping laser,
Cladding light stripper, the first fiber output head, optical fiber aqueous cold plate and coolant refrigeration equipment, by good refrigeration heat-radiation structure with
The optical fiber fusion welding technology of high quality has reached the high power laser light output of 300W；Medical device includes above-mentioned laser, further includes
Driving equipment, power conversion module, the second fiber output head, fiber coupling attachment device and medical optical fiber, laser and medical treatment
Direct coupling system is used between optical fiber, reaches higher coupling efficiency；The invention is for carrying out rubble and cutting group in medical treatment
It knits.
By the comparative analysis to patent document disclosed above, it is applicant's understanding that the light source occurring mode of the disclosure patent
And optical cavity increases mode and is all different, being analyzed above-mentioned patent does not influence the novelty of the application.
Summary of the invention
It, should it is an object of the invention to provide a kind of Super pulse solid-state thulium laser in place of overcome the deficiencies in the prior art
Laser emits light source by thulium stick and LD semiconductor palladium item jointly, and it is tens times high to form specific power output by resonant cavity amplification light source
Laser, improve pulse frequency, peak value of pulse and to the absorptivity of tissue in terms of be substantially better than pulse holmium in the prior art
Laser.
A kind of Super pulse solid-state thulium laser, including resonant cavity, the resonant cavity is closed at one end, and the other end is communicated with coupling
Device；High reflective mirror, acousto-optic Q modulation device, thulium stick, high lens and focus lamp are coaxially fixed in resonant cavity, wherein the periphery installation of thulium stick
The LD semiconductor palladium item of oriented thulium stick projection source, and thulium stick and LD semiconductor palladium item are respectively connected with power supply；Pacify one end of thulium stick
Acousto-optic Q modulation device is filled, the other end of thulium stick is equipped with high lens, focus lamp and coupler；The other end installation of acousto-optic Q modulation device is high anti-
Mirror.
Moreover, the fixation of the both ends of thulium stick is supported by bracket, and bracket, acousto-optic Q modulation device, high reflective mirror, high lens and focusing
Mirror is fixedly connected with resonance cavity wall.
Moreover, 220V alternating current is become 36V direct current by power supply leads to thulium stick and LD semiconductor palladium item.
Moreover, the light source that LD semiconductor palladium item irradiates wavelength to thulium stick after being powered as 785nm.
Moreover, after the direct current that thulium stick is passed through reaches 13A and receives the light source irradiation of LD semiconductor palladium item, the thulium stick two
The continuous light of end transmitting 2000nm.
It advantages of the present invention and has the technical effect that
A kind of Super pulse solid-state thulium laser of the invention, by being 785nm to LD semiconductor palladium item energization generation wavelength
Semiconductor laser make thulium stick generation wavelength and by the Semiconductor Laser Irradiation and being passed through 13A direct current to thulium stick
The continuous light of the mixing of 2000nm；The continuous light of the mixing is emitted by one end of thulium stick to acousto-optic Q modulation device, and carries out mixing continuous light
The first second compression, the continuous light of the mixing after high reflective mirror reflects again through acousto-optic Q modulation device carry out the second second compression, and after through two
The continuous light of mixing of second compression, which is emitted from the other end of thulium stick to high lens and focus lamp, is filtered focusing, the mixing after focusing
Continuous illumination is mapped in the optical fiber of coupler the use that can perform the operation.
The difference of a kind of Super pulse solid-state thulium laser of the invention and the prior art is: 1, by LD semiconductor palladium
Item and thulium stick emit mixed light jointly, realize the continuous light output of the mixing of 2000nm；2, the continuous light of mixing in resonant cavity can be past
It is compressed again by acousto-optic Q modulation device, is compressed to the mixing continuous light energy generally exported in the extremely narrow pulse of width and emits, thus
Significantly improve the peak power for mixing continuous light.
A kind of advantage of Super pulse solid-state thulium laser of the invention compared with the prior art is: 1, can effectively improve arteries and veins
Rate is rushed, operative speed is accelerated；2, pulse peak power can be effectively improved, the rubble to bulk calculus or extremely hard calculus is improved
Effect；3, (the Bladder stone wavelength 2140nm of the prior art is that laser is relatively high to absorption of human body to absorptivity of the raising to tissue
Rate, and Thulium lasers wavelength 2000nm is in the laser of present energy input optical fibre transmission to the highest laser of absorption of human body, that is,
100W Thulium lasers are equivalent to 170W Bladder stone to tissue absorption).
Detailed description of the invention
Fig. 1 is the structural schematic diagram of first embodiment of the invention；
Fig. 2 is the structural schematic diagram of second embodiment of the invention；
Fig. 3 is absorbance curves comparison diagram of the present invention light source different from the prior art to tissue；
In figure: 1- high reflective mirror；2- acousto-optic Q modulation device；3- bracket；4- thulium stick；5-LD semiconductor palladium item；6- resonant cavity；7- high
Lens；8- focus lamp；9- coupler；10- the first thulium stick；11- the second thulium stick.
Specific embodiment
For that can further appreciate that the contents of the present invention, feature and effect, the following examples are hereby given, and cooperates attached drawing detailed
It is described as follows.It should be noted that the present embodiment be it is descriptive, be not restrictive, cannot thus limit guarantor of the invention
Protect range.
A kind of Super pulse solid-state thulium laser, including resonant cavity 6, the resonant cavity is closed at one end, and the other end is communicated with coupling
Device 9；High reflective mirror 1, acousto-optic Q modulation device 2, thulium stick 4, high lens 7 and focus lamp 8 are coaxially fixed in resonant cavity, wherein thulium stick is outer
Week installs the LD semiconductor palladium item 5 of oriented thulium stick projection source, and thulium stick and LD semiconductor palladium item are respectively connected with power supply；Thulium stick
Acousto-optic Q modulation device is installed in one end, and the other end of thulium stick is equipped with high lens, focus lamp and coupler；The other end of acousto-optic Q modulation device is pacified
Fill high reflective mirror.
Moreover, the fixation of the both ends of thulium stick is supported by bracket 3, and bracket, acousto-optic Q modulation device, high reflective mirror, high lens and focusing
Mirror is fixedly connected with resonance cavity wall.
Moreover, 220V alternating current is become 36V direct current by power supply leads to thulium stick and LD semiconductor palladium item.
Moreover, the light source that LD semiconductor palladium item irradiates wavelength to thulium stick after being powered as 785nm.
Moreover, after the direct current that thulium stick is passed through reaches 13A and receives the light source irradiation of LD semiconductor palladium item, the thulium stick two
The continuous light of end transmitting 2000nm.
In addition, currently preferred, power supply, acousto-optic Q modulation device and coupler are all made of matured product in the prior art, and
And LD semiconductor palladium item, bracket, acousto-optic Q modulation device, high reflective mirror, high lens and focus lamp are adopted with the mode that is fixedly connected of resonant cavity
With mature means in the prior art.
Illustrate a specific embodiment of the invention to be clearer, a kind of example be provided below:
First embodiment, I I type center Q-switched laser of BG: including resonant cavity, the resonant cavity is closed at one end, other end connection
Coupler；High reflective mirror, acousto-optic Q modulation device, thulium stick, high lens and focus lamp are sequentially coaxially fixedly mounted in resonant cavity, and thulium stick is outer
Week installs the LD semiconductor palladium item of oriented thulium stick peripheral outer wall projection source.
The advantage of the structure is: continuous light, the continuous light warp of the mixing can be mixed by LD semiconductor palladium item and the transmitting of thulium stick
High reflective mirror reflection is crossed, under the same unit volume of LD semiconductor palladium item and thulium stick, passes twice through the compression of acousto-optic Q modulation device, thus
Improving laser device pulsation rate, pulse peak power and the absorptivity to tissue.
Second embodiment, I type center Q-switched laser of BG: including resonant cavity, the resonant cavity is closed at one end, other end connection
Coupler；In resonant cavity from closed end to connection coupler end be sequentially coaxially fixedly mounted with high reflective mirror, the first thulium stick 10, acousto-optic Q modulation device,
Second thulium stick 11, high lens, focus lamp and coupler, and the periphery of the first thulium stick and the second thulium stick was mounted on to thulium stick week
To the LD semiconductor palladium item of outer wall projection source.
Compared to the first embodiment, mixed in second embodiment continuous light by high reflective mirror reflect, LD semiconductor palladium item,
It under the same unit volume of first thulium stick and the second thulium stick, is compressed three times by acousto-optic Q modulation device, than the company of mixing in first embodiment
The pulsation rate of continuous light, pulse peak power and higher to the absorptivity of tissue.
It should be noted that as shown in table 1: 1, the fast how many times of surgical procedure rubble speed of pulsation rate are how many times fast；2, arteries and veins
It rushes peak power height and illustrates that the ability of rubble head hardness is high；It 3, is that wavelength determines to the absorptivity of tissue, Bladder stone wavelength
2140nm is that laser is relatively high to human absorptivity.And Thulium lasers wavelength 2000nm is swashing for energy input optical fibre transmission now
To the highest laser of absorption of human body in light.Namely 100W Thulium lasers are equivalent to 170W Bladder stone to tissue absorption.
In addition, table 2 show the thulium laser technical parameter of first embodiment of the invention and second embodiment.
It should be understood that for those of ordinary skills, it can be modified or changed according to the above description,
And all these modifications and variations should all belong to the protection domain of appended claims of the present invention.
The output parameter value of 1. Bladder stone of table and pulse Thulium lasers compares
The all solid state thulium laser technical indicator of 2. Super pulse of table
| Output pulse frequency | Single pulse energy | Average Maximum Power Output | Pulsewidth | |
| I type of BG | 200HZ—1000HZ | 300mJ—50mJ | 60W | 0.5—1.5us |
| II type of BG | 200HZ—1000HZ | 200mJ—40mJ | 40W | 0.5—1.5us |
Claims (5)
1. a kind of Super pulse solid-state thulium laser, it is characterised in that: including resonant cavity, the resonant cavity is closed at one end, and the other end connects
It is connected with coupler；Coaxially it is fixed with high reflective mirror, acousto-optic Q modulation device, thulium stick, high lens and focus lamp in resonant cavity, wherein thulium stick
The LD semiconductor palladium item of oriented thulium stick projection source is installed in periphery, and thulium stick and LD semiconductor palladium item are respectively connected with power supply；It is described
Acousto-optic Q modulation device is installed in one end of thulium stick, and the other end of thulium stick is equipped with high lens, focus lamp and coupler；The acousto-optic Q modulation device
The other end install high reflective mirror.
2. a kind of Super pulse solid-state thulium laser according to claim 1, it is characterised in that: the both ends of the thulium stick are solid
Surely it is supported by bracket, and bracket, acousto-optic Q modulation device, high reflective mirror, high lens and focus lamp are fixedly connected with resonance cavity wall.
3. a kind of Super pulse solid-state thulium laser according to claim 1, it is characterised in that: the power supply exchanges 220V
Electricity becomes 36V direct current and leads to thulium stick and LD semiconductor palladium item.
4. a kind of Super pulse solid-state thulium laser according to claim 1, it is characterised in that: the LD semiconductor palladium item is logical
Electric backward thulium stick irradiates the light source that wavelength is 785nm.
5. a kind of Super pulse solid-state thulium laser according to claim 4, it is characterised in that: the direct current that the thulium stick is passed through
After electricity reaches 13A and receives the light source irradiation of LD semiconductor palladium item, which emits the continuous light of 2000nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910687021.8A CN110492348A (en) | 2019-07-29 | 2019-07-29 | A kind of Super pulse solid-state thulium laser |
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| CN201910687021.8A CN110492348A (en) | 2019-07-29 | 2019-07-29 | A kind of Super pulse solid-state thulium laser |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022236953A1 (en) * | 2021-05-12 | 2022-11-17 | 张宝刚 | Medical laser with collaborative output of solid-state pulse thulium laser and green laser |
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2019
- 2019-07-29 CN CN201910687021.8A patent/CN110492348A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022236953A1 (en) * | 2021-05-12 | 2022-11-17 | 张宝刚 | Medical laser with collaborative output of solid-state pulse thulium laser and green laser |
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