Intermediate infrared solid laser for medical cosmetology
By adopting a laser cavity with a mid-infrared solid-state laser and a single crystal rod of a xenon lamp, combined with a double resonant cavity of a flat concave cavity, the existing carbon dioxide dot matrix laser has solved the problems of low energy output and poor stability in skin peeling treatment, and achieved an efficient, stable and user-friendly mid-infrared solid-state laser.
Patent Information
- Application Number
- CN202422122021.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-30
- Publication Date
- 2025-06-06
- Estimated Expiration
- 2034-08-30
AI Technical Summary
The existing carbon dioxide dot matrix lasers have problems such as low energy output, poor stability, short lifespan and large damage to the skin in skin peeling treatment, resulting in poor user experience.
Mid-infrared solid-state laser is used as the light source, combined with the laser cavity of the xenon lamp single crystal rod and the dual resonant cavity of the flat cavity, fiber coupling is performed through suspended optical fibers to improve the output efficiency and stability of the laser.
It achieves the therapeutic effect with small energy, short recovery cycle and good user experience; it extends the laser life, improves energy efficiency and resource utilization, and enhances the stability and anti-disorder capability of the system.
Smart Images
Figure CN222953528U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of solid lasers, in particular to a mid-infrared solid laser used for medical cosmetology. Background Art
[0002] For skin ablative treatment, the mainstream approach is to use a carbon dioxide fractional laser light source. Since the wavelength of carbon dioxide laser is long, the depth of action is deep and the thermal effect is obvious, it causes greater damage to the skin. In addition, the recovery period is long and the user experience is poor. In addition, the photoelectric efficiency of carbon dioxide laser is low, the output energy is low, and the working material is poorly stable, resulting in a short life and poor stability. Therefore, this method has obvious disadvantages, and a new laser for medical cosmetology is urgently needed. Utility Model Content
[0003] In order to solve the above technical problems, the utility model proposes a mid-infrared solid laser for medical cosmetology, which adopts a mid-infrared solid laser as a light source, achieves the treatment effect with very small energy, has a short recovery period and good user experience; the laser cavity adopts the form of a xenon lamp single crystal rod, which can extend the laser life, and has high energy efficiency and high resource utilization; the dual resonant cavity adopts a flat concave cavity design, with high output efficiency, good stability and anti-disturbance capability.
[0004] The utility model provides the following technical solutions:
[0005] A mid-infrared solid laser for medical cosmetology, comprising a laser cavity, a laser resonant cavity, an indicator light source, a 45° reflector, a coupling mirror and an output optical fiber;
[0006] The laser cavity is a double xenon lamp single crystal rod; the laser resonant cavity includes an output mirror and a total reflection mirror, which are coaxially fixed at two ends of the laser cavity; one of the output mirror and the total reflection mirror is a concave mirror;
[0007] The 45° reflector, coupling mirror and output optical fiber are coaxially fixedly mounted on one end of the output mirror in sequence; the indicator light source is mounted on one side of the 45° reflector to emit an indicator light which is reflected by the 45° reflector and enters the coupling mirror; the light beam of the laser cavity and the indicator light pass through the 45° reflector and the coupling mirror and are output from the output optical fiber.
[0008] Preferably, the laser cavity comprises a ceramic cavity, a crystal rod and two xenon lamps; the crystal rod and the two xenon lamps are both embedded in the cavity of the ceramic cavity and isolated by a quartz glass sleeve; the crystal rod is located between the two xenon lamps.
[0009] Preferably, the inner wall of the ceramic cavity is a mirror reflection wall.
[0010] Preferably, the cavity wall of the ceramic cavity is hollow and water flows inside, the water inlet and outlet are located at the positive and negative poles of the xenon lamp, and are isolated from water by a sealing ring.
[0011] Preferably, the quartz glass sleeve is a cerium-doped quartz glass sleeve or a samarium-doped quartz glass sleeve.
[0012] Preferably, the output optical fiber is a suspended optical fiber.
[0013] Beneficial effects of the utility model:
[0014] The utility model proposes a mid-infrared solid laser for medical cosmetology, which adopts the mid-infrared solid laser as the light source. Since the mid-infrared wavelength is at the absorption peak of K, it can be better absorbed by K, and is more targeted during treatment. The treatment effect can be achieved with very small energy, and the recovery period is short and the user experience is good; the laser cavity adopts the form of a xenon lamp single crystal rod, which can extend the laser life, and has high energy efficiency and resource utilization; the double resonant cavity adopts the design of a flat concave cavity, which has high output efficiency, good stability and anti-disturbance capability; the optical fiber coupling part adopts a suspended optical fiber, which can effectively reduce the damage of the laser to the optical fiber and extend the service life of the optical fiber. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is a schematic diagram of the overall structure of a mid-infrared solid-state laser for medical cosmetology according to an embodiment of the utility model;
[0016] Figure 2 This is a schematic diagram of the laser cavity structure of an embodiment of the utility model;
[0017] Figure 3 It is a schematic diagram of the structure of the laser resonant cavity of an embodiment of the utility model;
[0018] Figure 4 It is a schematic diagram of optical fiber coupling of an embodiment of the utility model.
[0019] In the figure: 1. Output optical fiber; 2. Coupling mirror; 3. 45° reflecting mirror; 4. Output mirror; 5. Crystal rod; 6. Xenon lamp; 7. Total reflecting mirror; 8. Indicator light source; 9. Ceramic cavity; 10. Quartz glass sleeve. DETAILED DESCRIPTION
[0020] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.
[0021] Example 1
[0022] The photoelectric efficiency of carbon dioxide laser is low, the output energy is low, and the working material is unstable, resulting in a short life and poor stability. Therefore, this method has obvious disadvantages. For this reason, this embodiment proposes a mid-infrared solid laser for medical cosmetology. The overall structural diagram is shown in FIG. Figure 1 As shown, it includes a laser cavity, a laser resonant cavity, an indicator light source 8, a 45° reflector 3, a coupling mirror 2 and an output optical fiber 1. The laser cavity is a double xenon lamp single crystal rod; the laser resonant cavity includes an output mirror 4 and a total reflector 7, which are coaxially fixedly mounted at both ends of the laser cavity; one of the output mirror 4 and the total reflector 7 is a concave mirror; one end of the output mirror 4 is coaxially fixedly mounted with a 45° reflector 3, a coupling mirror 2 and an output optical fiber 1 in sequence; the indicator light source 8 is mounted on one side of the 45° reflector 3, emits an indicator light, which is reflected by the 45° reflector 3 and enters the coupling mirror 2; the laser cavity light beam and the indicator light pass through the 45° reflector 3 and the coupling mirror 2, and are output from the output optical fiber 1. The indicator light is visible light, and generally green light or red light is used.
[0023] Specifically, the schematic diagram of the laser cavity structure is as follows: Figure 2 As shown, the laser cavity includes a ceramic cavity 9, a crystal rod 5 and two xenon lamps 6; the crystal rod 5 and the two xenon lamps 6 are embedded in the cavity of the ceramic cavity 9 and isolated by a quartz glass sleeve 10; the crystal rod 5 is located between the two xenon lamps 6. The inner wall of the ceramic cavity 9 is a mirror reflection wall, and the inner curved surface of the cavity is designed through optical simulation. The pump light in the ceramic cavity 9 can be evenly distributed, which can improve the conversion efficiency of the laser cavity. The cavity wall of the ceramic cavity 9 is hollow, and water flows inside for heat dissipation. The water inlet and outlet are located at the positive and negative poles of the xenon lamp 6, and the water is isolated by a sealing ring, which ensures that the xenon lamp and the crystal rod have a good heat dissipation effect when working, and improves the stability and reliability of the system.
[0024] Specifically, Figure 3 As shown, the laser resonant cavity adopts a plano-concave cavity, and the curvature lens can be the output mirror 4 or on the reflector 7, which can be selected according to the debugging requirements. The output mirror 4 and the reflector 7 form a laser resonant cavity, and the generated photons oscillate in the resonant cavity and form stimulated radiation, and finally generate laser output from the output mirror 4.
[0025] Furthermore, after optical simulation design, the laser enters the coupling mirror 2 after passing through the 45° reflector 3. The size and position of the laser spot on the fiber end face can be controlled by adjusting the front and rear positions of the coupling mirror 2. The position of the indicator light cooperates with the reflector 3 to adjust the size and position of the indicator light entering the fiber. Through debugging, the indicator light and the laser can be coaxially output, which is convenient for judgment and observation during use. The output fiber 1 uses a suspended fiber to avoid the deviation caused by the vibration of the laser, and the laser acts on the metal surface to contaminate the fiber end face.
[0026] The operation of the laser of this embodiment includes the following steps: the xenon lamp 6 generates strong pulsed light through high voltage discharge of the power supply, and the spectrum range generated by it is very wide and can completely cover the absorption peak of the gain medium in the crystal rod. At the same time, the ultraviolet light generated by the light source will heat the crystal rod 5, resulting in adverse effects such as reduced conversion efficiency, spot deformation, thermal lens effect, thermal depolarization effect, etc. Therefore, it is necessary to use a special substance doped in the quartz glass sleeve 10 to filter out or absorb all the ultraviolet light, and take it away by cooling water in the form of heat. Generally, a cerium-doped quartz glass sleeve or a samarium-doped quartz glass sleeve is used to ensure the effective absorption of the crystal gain material while reducing the impact of ultraviolet light on the crystal.
[0027] The gain medium in the crystal rod 5 absorbs light of a specific wavelength and generates an energy level transition from a low energy state to a high energy state. Subsequently, due to the instability of the high energy state, an energy level transition occurs again, from a high energy state to a low energy state, and energy is released outward in the form of light and heat. The generated photons will oscillate along the direction of the laser resonant cavity. During the continuous oscillation process, the light energy is continuously amplified, and part of the light is output through the output mirror 4 to form a laser. After the laser cavity outputs the laser, the laser will pass through the 45° reflector 3 and enter the coupling mirror 2. The coupling mirror 2 focuses the laser and couples it into the output optical fiber 1 for output.
[0028] This embodiment adopts a mid-infrared solid laser as a light source. Since the mid-infrared wavelength is at the absorption peak of K, it can be better absorbed by K, and is more targeted during treatment. It can achieve the treatment effect with very small energy, and the recovery period is short and the user experience is good. The laser cavity adopts the form of a xenon lamp single crystal rod, which can extend the laser life, and has high energy efficiency and resource utilization. The double resonant cavity adopts a flat concave cavity design, which has high output efficiency, good stability, and anti-disturbance capability. The fiber coupling part adopts a suspended fiber, which can effectively reduce the damage of the laser to the fiber and extend the service life of the fiber.
[0029] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A mid-infrared solid laser for medical cosmetology, characterized in that: It comprises a laser cavity, a laser resonant cavity, an indicator light source (8), a 45° reflector (3), a coupling mirror (2) and an output optical fiber (1); The laser cavity is a double xenon lamp single crystal rod; the laser resonant cavity comprises an output mirror (4) and a total reflection mirror (7), which are coaxially fixedly mounted at two ends of the laser cavity; one of the output mirror (4) and the total reflection mirror (7) is a concave mirror; The 45° reflector (3), the coupling mirror (2) and the output optical fiber (1) are coaxially fixedly mounted on one end of the output mirror (4); the indicator light source (8) is mounted on one side of the 45° reflector (3) to emit an indicator light, which is reflected by the 45° reflector (3) and enters the coupling mirror (2); the light beam of the laser cavity and the indicator light pass through the 45° reflector (3) and the coupling mirror (2) and are output from the output optical fiber (1).
2. The mid-infrared solid laser for medical cosmetology according to claim 1, characterized in that: The laser cavity comprises a ceramic cavity (9), a crystal rod (5) and two xenon lamps (6); the crystal rod (5) and the two xenon lamps (6) are both embedded in the cavity of the ceramic cavity (9) and isolated by a quartz glass sleeve (10); the crystal rod (5) is located between the two xenon lamps (6).
3. The mid-infrared solid laser for medical cosmetology according to claim 2, characterized in that: The inner wall of the ceramic cavity (9) is a mirror reflection wall.
4. The mid-infrared solid laser for medical cosmetology according to claim 2, characterized in that: The cavity wall of the ceramic cavity (9) is hollow and water flows inside. The water inlet and outlet are located at the positive and negative poles of the xenon lamp (6) and are isolated from water by a sealing ring.
5. The mid-infrared solid laser for medical cosmetology according to claim 2, characterized in that: The quartz glass sleeve (10) is a cerium-doped quartz glass sleeve or a samarium-doped quartz glass sleeve.
6. The mid-infrared solid laser for medical cosmetology according to claim 2, characterized in that: The output optical fiber (1) is a suspended optical fiber.