CN219477230U - Handheld picosecond solid laser for medical cosmetology - Google Patents
Handheld picosecond solid laser for medical cosmetology Download PDFInfo
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- CN219477230U CN219477230U CN202320630763.9U CN202320630763U CN219477230U CN 219477230 U CN219477230 U CN 219477230U CN 202320630763 U CN202320630763 U CN 202320630763U CN 219477230 U CN219477230 U CN 219477230U
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- xenon lamp
- light
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- 239000007787 solid Substances 0.000 title claims abstract description 12
- 239000013078 crystal Substances 0.000 claims abstract description 119
- 229910052724 xenon Inorganic materials 0.000 claims abstract description 21
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000011521 glass Substances 0.000 claims abstract description 17
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000005086 pumping Methods 0.000 claims abstract description 4
- 230000005540 biological transmission Effects 0.000 claims description 8
- 239000011248 coating agent Substances 0.000 claims description 8
- 238000000576 coating method Methods 0.000 claims description 8
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 6
- 238000002834 transmittance Methods 0.000 claims description 4
- 239000000919 ceramic Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 238000004026 adhesive bonding Methods 0.000 claims 1
- 230000037311 normal skin Effects 0.000 abstract description 4
- 230000000740 bleeding effect Effects 0.000 abstract description 2
- 230000009982 effect on human Effects 0.000 abstract description 2
- 238000011084 recovery Methods 0.000 abstract description 2
- 239000002245 particle Substances 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- 230000003993 interaction Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 230000005610 quantum mechanics Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
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- Lasers (AREA)
Abstract
The utility model discloses a handheld picosecond solid laser for medical cosmetology, which comprises a shell, wherein a light-gathering cavity, a pulse xenon lamp, a bonding crystal, a crystal rod, a glass tube sleeve and a collimating mirror are arranged in the shell, and the pulse xenon lamp is arranged below the inside of the light-gathering cavity and used as a pumping source; the bonding crystal body is arranged in the light condensing cavity and is positioned on the left side above the pulse xenon lamp; the crystal rod is arranged on the right side of the bonding crystal body, and the pulse xenon lamp provides energy for the bonding crystal and the crystal rod; a glass tube sleeve is arranged between the bonding crystal and the crystal rod in a connecting sleeve; the collimating lens is arranged in the middle of the quartz glass tube sleeve. The pulse width of the laser is controlled to be in the picosecond level, so that higher energy can be generated in a shorter time, meanwhile, the thermal effect on human skin tissues is smaller, normal skin tissues cannot be damaged, the pain of a user is lower, and the laser has the characteristics of no bleeding, quick recovery and the like.
Description
Technical Field
The utility model belongs to the technical field of lasers, and particularly relates to a handheld picosecond solid laser for medical cosmetology.
Background
The solid laser can be used for removing spots, mole and tattoo, and common equipment is active Q-switching, and has high output energy and nanosecond pulse width. The small handheld device is generally low in passive Q-switching output energy, the pulse width is of nanosecond magnitude as well, the problems of instability, shaking and the like of the pulse exist, the device adopts special design, the output is of picosecond magnitude, the influence of thermal effect on normal skin tissues is reduced, and the device has better treatment effect and user experience.
The prior art adopts an active or passive Q-switching mode, the output laser pulse width is nanosecond level, the thermal effect is obvious during treatment, normal skin tissues can be damaged, the pain of a user is strong, especially the problems of pulse jitter and the like can cause the difference of single pulse output energy, the output consistency is poor, and certain difficulty and risk exist during treatment.
Disclosure of Invention
Aiming at the problems, the utility model aims to provide a handheld picosecond solid laser for medical cosmetology, which controls the pulse width of laser to be in the picosecond order, can generate higher energy in a shorter time, has smaller thermal effect on human skin tissues, can not damage normal skin tissues, has stronger pertinence, has lower pain feeling of a user due to short acting time, and has the characteristics of no bleeding, quick recovery and the like.
The technical scheme of the utility model is as follows: a handheld picosecond solid laser for medical cosmetology, comprising a housing, wherein the housing is internally provided with:
a light condensing cavity;
the pulse xenon lamp is arranged below the inner part of the light gathering cavity and is used as a pumping source;
the bonding crystal is formed by bonding a Nd-YAG crystal and a Cr-4-YAG crystal, the bonding crystal is arranged in the light-gathering cavity and is positioned on the left side above the pulse xenon lamp, the pulse xenon lamp provides energy for the bonding crystal, the left end face of the bonding crystal is plated with a high-reflection film, and the right end face of the bonding crystal is plated with a partial transmission film;
YAG crystal, pulse xenon lamp provides energy for the crystal bar, and anti-reflection films are plated at two ends of the crystal bar;
the glass tube sleeve is arranged between the bonding crystal and the crystal rod in a connecting sleeve manner;
and the collimating mirror is arranged in the middle of the quartz glass tube sleeve.
Further, the glass sleeve is cerium-doped or samarium-doped quartz glass, absorbs ultraviolet light which cannot be utilized by the crystal, and generates infrared or visible light which can be utilized by the crystal, so that the energy utilization rate and the conversion efficiency are improved.
Further, the glass tube sleeve is bonded with the bonding crystal and the crystal rod by using UV ultraviolet glue.
Further, the size of the bonding crystal is phi 9 mm, the initial transmittance of the Cr4+ YAG crystal is T0=70%, the doping concentration of the Nd-YAG crystal of the bonding crystal is 1.2at%, the high-reflection film is HR@1064nm, the partial transmission film is PR@1064nm, and T=30%.
Further, the size of the crystal rod is phi 9 multiplied by 150mm, the doping concentration is 1.2at%, and the antireflection films are AR@1064nm.
Further, the material of the light gathering cavity is any one of ceramic, metal, quartz glass or glass filled barium sulfate.
Further, the collimating mirror is a biconcave mirror, the curvature radius is R1=R2= -3000mm, and the coating is double-sided AR@1064nm.
The working method of the utility model comprises the following steps: the laser resonant cavity is formed by respectively plating a high-reflection film and a partial transmission film aiming at a certain wavelength on two end surfaces of the bonding crystal, cr < 4+ > particles capable of absorbing the wavelength are arranged in the Cr < 4+ > YAG crystal, when the gain of energy stored in the crystal is larger than the absorbed loss, the energy is oscillated in the laser resonant cavity, laser output is generated, the generated laser pulse width is related to the doping concentration of the Cr < 4+ > particles, the length of the resonant cavity and the transmittance of a coating film at the output end. The pulse width of the output laser can be controlled to be in the picosecond order by controlling the parameters; at this time, the crystal rod also stores enough energy, the coating films at the two ends of the crystal rod are antireflection films aiming at a certain wavelength, so that laser cannot be generated without a resonant cavity, the energy can be stored in the crystal rod in the form of light energy, if no external loss exists, the energy can be naturally dissipated for a period of time, at this time, the laser generated by the bonding crystal body enters the crystal rod after passing through the collimating mirror, the light energy stored in the crystal rod is consumed, according to the quantum mechanics theory, the interaction among particles can generate the laser with the same attribute as the incident light, at this time, the laser energy is amplified, the pulse width, the phase, the polarization state and the direction are consistent with those before, and finally the output laser has the pulse width of picosecond level and high energy.
Compared with the prior art, the utility model has the beneficial effects that:
the bonding crystal is formed by bonding and growing Nd-YAG crystals and Cr < 4+ > YAG crystals, the size, doping concentration and coating parameters of the crystals can influence the pulse width and energy of the finally output laser, and corresponding parameters can be determined by calculation and test, so that the bonding crystal with stable output and meeting the use requirements is obtained.
Since the bonding crystal Nd: YAG & Cr4+: YAG and Nd: YAG crystals are required to be placed in the light-gathering cavity and positioned on the side surface of the pulse xenon lamp, two crystals and a collimating lens are required to be fixed and connected, and a quartz glass sleeve with specific size is required to be connected and fixed between the crystals and the collimating lens, and the quartz glass sleeve is specially doped quartz glass and can absorb ultraviolet light which cannot be utilized by the crystals and generate infrared or visible light which can be utilized by the crystals, so that the energy utilization rate and the conversion efficiency are improved. The collimating lens is used for amplifying the laser divergence angle generated by the bonding crystal, so that the bonding crystal can be better filled with Nd-YAG crystal rods, and the energy utilization rate and the conversion efficiency are improved. Finally, the UV ultraviolet glue is used for bonding, the bonding strength can be effectively improved by controlling the bonding area, and in addition, the bonding crystal Nd: YAG & Cr4+: YAG and Nd: YAG coaxial can be ensured by controlling the tolerance of the quartz glass sleeve, so that the amplification efficiency of laser is improved, and the uniformity of light spots is improved.
The light-focusing cavity can reflect and converge light emitted by the pulse xenon lamp, and acts on two kinds of crystals of bonding crystal Nd: YAG & Cr4+: YAG and Nd: YAG, the two kinds of crystals absorb energy simultaneously, synchronization can be realized on the operating time, and the volume is effectively reduced on the basis of improving the resource utilization rate.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the present utility model.
Wherein, 1-bonding crystal, 2-collimating lens, 3-quartz glass sleeve, 4-crystal rod, 5-spotlight cavity, 6-pulse xenon lamp.
Detailed Description
A detailed description of embodiments of the present utility model will be given below with reference to fig. 1. In the description of the present utility model, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
Examples: as shown in fig. 1, a handheld picosecond solid laser for medical cosmetology comprises a shell, wherein a light-gathering cavity 5, a pulse xenon lamp 6, a bonding crystal 1, a crystal rod 4, a glass tube sleeve 3 and a collimating lens 2 are arranged in the shell. Wherein,,
the pulse xenon lamp 6 is arranged below the inner part of the light gathering cavity 5 and is used as a pumping source; the bonding crystal 1 is formed by bonding Nd-YAG crystals and Cr < 4+ > YAG crystals, the bonding crystal 1 is arranged in the light focusing cavity 5 and is positioned on the left side above the pulse xenon lamp 6, the pulse xenon lamp 6 supplies energy for the bonding crystal 1, the left end face of the bonding crystal 1 is plated with a high-reflection film, and the right end face of the bonding crystal 1 is plated with a partial transmission film; the crystal rod 4 is arranged on the right side of the bonding crystal 1, the crystal rod 4 is a Nd-YAG crystal, the pulse xenon lamp 6 supplies energy for the crystal rod 4, and the two ends of the crystal rod 4 are plated with antireflection films; a glass tube sleeve 3 is arranged between the bonding crystal 1 and the crystal rod 4 in a connecting sleeve manner; the collimator lens 2 is arranged in the middle of the quartz glass tube sleeve 3.
The glass sleeve 3 is cerium-doped or samarium-doped quartz glass, absorbs ultraviolet light which cannot be utilized by the crystal and generates infrared or visible light which can be utilized by the crystal, so that the energy utilization rate and the conversion efficiency are improved; the glass tube sleeve 3 is bonded with the bonding crystal 1 and the crystal rod 4 by using UV ultraviolet glue; the size of the bonding crystal 1 is phi 9 multiplied by 10+15mm, the initial transmittance of the Cr4+ YAG crystal is T0=70%, the doping concentration of the Nd-YAG crystal of the bonding crystal 1 is 1.2at%, the high-reflection film is HR@1064nm, the partial transmission film is PR@1064nm, and T=30%; the size of the crystal rod 4 is phi 9 multiplied by 150mm, the doping concentration is 1.2at%, and the antireflection films are AR@1064nm; the material of the light gathering cavity 5 is any one of ceramic, metal, quartz glass or glass filled barium sulfate; the collimating mirror 2 is a double concave mirror, the curvature radius is R1=R2= -3000mm, and the coating is double-sided AR@1064nm.
The working method of the embodiment is as follows: after being reflected and converged by the light-gathering cavity 5, the light emitted by the pulse xenon lamp 6 acts on the bonding crystal 1 and the crystal rod 4, the two crystals absorb the energy and store the energy, meanwhile, a gain medium in the crystal can generate energy level transition and release the energy outwards in the form of light and heat, the bonding crystal 1 is formed by bonding a specially designed Nd: YAG & Cr4+: YAG crystal, two end faces of the bonding crystal 1 are respectively plated with a high reflection film and a partial transmission film aiming at a certain wavelength to form a laser resonant cavity, cr4+: the YAG crystal has Cr4 < + > particles capable of absorbing the wavelength, when the gain of the energy stored in the crystal is larger than the absorbed loss, the energy forms oscillation in the laser resonant cavity and generates laser output, and the generated laser pulse width is related to the doping concentration of the Cr4 < + > particles, the length of the resonant cavity and the transmission rate of a coating film at the output end. The pulse width of the output laser can be controlled to be in the picosecond order by controlling the parameters; at this time, the crystal rod 4 also stores enough energy, the coating films at the two ends of the crystal rod 4 are antireflection films aiming at a certain wavelength, so that laser cannot be generated without a resonant cavity, the energy can be stored in the crystal rod 4 in the form of light energy, if no external loss exists, the energy can be naturally dissipated for a period of time, at this time, the laser generated by the bonding crystal body 1 enters the crystal rod 4 after passing through the collimating lens 2, the light energy stored in the crystal rod 4 is consumed, the interaction among particles can occur according to the quantum mechanics theory, the laser with the same attribute as the incident light can be generated, at this time, the laser energy is amplified, the pulse width, the phase, the polarization state and the direction are consistent with the previous, and finally the output laser has the pulse width of picosecond and has high energy.
The specific types of the elements are not specially specified, and all the elements can be common products sold in the market, so long as the use requirements of the utility model can be met.
The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the utility model, and is not meant to limit the utility model thereto, but to limit the utility model thereto, and any modifications, equivalents, improvements and equivalents may be made thereto without departing from the spirit and principles of the utility model.
Claims (7)
1. The utility model provides a handheld picosecond solid laser for medical treatment is beautified, includes the casing, its characterized in that is equipped with in the casing:
a light-gathering cavity (5);
the pulse xenon lamp (6) is arranged below the inner part of the light gathering cavity (5) and is used as a pumping source;
the bonding crystal body (1) is formed by bonding Nd: YAG crystals and Cr4+: YAG crystals, the bonding crystal body (1) is arranged in the light-gathering cavity (5) and is positioned on the left side above the pulse xenon lamp (6), the pulse xenon lamp (6) provides energy for the bonding crystal body (1), the left end face of the bonding crystal body (1) is plated with a high-reflection film, and the right end face of the bonding crystal body (1) is plated with a partial transmission film;
YAG crystal, a pulse xenon lamp (6) provides energy for the crystal rod (4), and antireflection films are plated at two ends of the crystal rod (4);
the glass tube sleeve (3) is connected between the bonding crystal body (1) and the crystal rod (4), and the glass tube sleeve (3) is arranged in the connecting sleeve;
the collimating mirror (2) is arranged in the middle of the glass tube sleeve (3).
2. A hand-held picosecond solid-state laser for medical cosmetology according to claim 1, characterized in that the glass tube sleeve (3) is cerium-doped or samarium-doped quartz glass.
3. A hand-held picosecond solid laser for medical cosmetology according to claim 1, characterized in that the connection between the glass tube sleeve (3) and the bonding crystal (1), crystal rod (4) is UV glue bonding.
4. A hand-held picosecond solid-state laser for medical cosmetology according to claim 1, characterized in that the size of the bonding crystal (1) is Φ9× (10+15) mm, the initial transmittance of the cr4+: YAG crystal is t0=70%, the doping concentration of the Nd: YAG crystal of the bonding crystal (1) is 1.2at%, the highly reflective film is hr@1064nm, the partially transmissive film is pr@1064nm, t=30%.
5. A hand-held picosecond solid laser for medical cosmetology according to claim 1, characterized in that the crystal rod (4) has dimensions of phi 9 x 150mm, a doping concentration of 1.2at% and an antireflection film of ar@1064nm.
6. A hand-held picosecond solid-state laser for medical cosmetology according to claim 1, characterized in that the material of the light-gathering cavity (5) is any one of ceramic, metal, quartz glass or glass-filled barium sulphate.
7. A hand-held picosecond solid laser for medical cosmetology according to claim 1, characterized in that the collimator lens (2) is a biconcave lens with a radius of curvature r1=r2= -3000mm and a coating of double-sided ar@1064nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320630763.9U CN219477230U (en) | 2023-03-28 | 2023-03-28 | Handheld picosecond solid laser for medical cosmetology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320630763.9U CN219477230U (en) | 2023-03-28 | 2023-03-28 | Handheld picosecond solid laser for medical cosmetology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219477230U true CN219477230U (en) | 2023-08-04 |
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ID=87441990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320630763.9U Active CN219477230U (en) | 2023-03-28 | 2023-03-28 | Handheld picosecond solid laser for medical cosmetology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219477230U (en) |
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- 2023-03-28 CN CN202320630763.9U patent/CN219477230U/en active Active
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