CN219185055U - Tunable ultraviolet laser disinfection device safe for human body - Google Patents
Tunable ultraviolet laser disinfection device safe for human body Download PDFInfo
- Publication number
- CN219185055U CN219185055U CN202220899011.8U CN202220899011U CN219185055U CN 219185055 U CN219185055 U CN 219185055U CN 202220899011 U CN202220899011 U CN 202220899011U CN 219185055 U CN219185055 U CN 219185055U
- Authority
- CN
- China
- Prior art keywords
- laser
- ultraviolet laser
- deep ultraviolet
- crystal
- mirror
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
Landscapes
- Radiation-Therapy Devices (AREA)
- Lasers (AREA)
Abstract
The application provides a tunable ultraviolet laser disinfection device safe to human bodies, which comprises a shell, wherein a deep ultraviolet laser is arranged in the shell and is connected with a scanning lens through a beam shaping system, the deep ultraviolet laser is also connected with a control system through a laser communication cable, and the control system is connected with the scanning lens through the scanning lens communication cable; the method can realize continuous wavelength adjustment in the wavelength range of 200-225nm, and is suitable for different killing scenes; if a pulse pumping or Q-switching working mode is adopted, the extremely high peak power can be obtained under lower average power, so that the sterilizing speed of bacteria and viruses is improved.
Description
Technical Field
The application relates to the technical field of disinfection, in particular to a tunable ultraviolet laser disinfection device safe to human bodies.
Background
Compared with chemical disinfection, the ultraviolet disinfection is a common physical disinfection mode, and has the advantages of simple operation, no chemical residue, wide application range, no resistance of microorganisms and the like; DNA and RNA in the microorganism are subjected to photochemical reaction under the irradiation of short wave ultraviolet (UVC, 200nm < lambda <280 nm), pyrimidine dimers are formed to damage the structure of genetic materials, normal metabolism of the microorganism and replication of the genetic materials are affected, so that the microorganism is killed or inactivated, as the absorption peak of the DNA on the ultraviolet is near 260nm, the ultraviolet disinfection light source commonly used at present is designed for the wavelength nearby, such as a low-pressure mercury lamp (253.7 nm), an ultraviolet light emitting diode (UV-LED, 265 nm) and the like, although the killing effect on bacteria and viruses is good, the ultraviolet light near 260nm also penetrates through the stratum corneum and cornea of human skin, skin cancer and cataract are damaged by long-term irradiation, and the human health is not protected, so that the microorganism can not be disinfected in real time under a human scene.
In contrast, ultraviolet light in the 200-230nm band in the UVC band hardly penetrates the stratum corneum of the skin and the tear layer of the outer surface of the eye, and the ultraviolet absorption spectrum of DNA/RNAThe absorption degree tends to rise near 230nm, and a very good inactivation effect can be generated on the influenza virus at a very low dose, so that the band has very high safety and very effective disinfection effect; the professor Brenner, et al, from the university of Columbia, medical center, have experimentally verified that the 207-222nm band in the far ultraviolet (far-UVC) has similar antimicrobial properties to typical germicidal ultraviolet (253.7 nm) but does not cause damage to mammalian skin. The Yamano N et al further studied the effect of long-term irradiation of 222nm ultraviolet light on the carcinogenicity of mouse skin by using 1mW/cm 2 Is irradiated for a long period of 10 weeks 3 times per week, and the irradiation energy of the mice is 500mJ/cm 2 Finally, no signs of tumor were observed in mice, and furthermore, no retinal damage was observed in all 222nm uv treated mice, indicating that 222nm uv was absorbed at the ocular surface and did not reach the lens or retina.
The experimental study shows that 222nm ultraviolet light can realize effective disinfection and sterilization of bacterial viruses under the condition of ensuring human safety, compared with 253.7nm low-voltage mercury lamp light sources, the ultraviolet light source is safer and more reliable, special disinfection equipment is required to be equipped in more and more living scenes under the trend of prevention and control normalization of epidemic situations in the future, and the ultraviolet light source has unique advantages for places with high personnel density and large personnel flow such as terminal buildings, railway stations, exhibition halls and the like, and special places such as hospitals and nursing homes, and the like, and can finish effective disinfection and sterilization of bacterial viruses under the condition of ensuring personnel safety by using 222nm deep ultraviolet laser.
At present, the 222nm deep ultraviolet disinfection technology has not been widely used, because the light source acquisition path of the wave band is limited. According to the latest reports, only a KrCl excimer lamp matched with an optical filter is manufactured as a light source for 222nm deep ultraviolet disinfection, but the power of ultraviolet light emitted by the excimer lamp is obviously reduced along with the expansion of the distance, so that the effective disinfection radius is smaller, the KrCl excimer lamp is not suitable for a large-scale disinfection scene, and the laser has the advantages of high brightness, high directivity, high monochromaticity, high power density and high peak power, can be used for rapidly, efficiently and widely disinfecting bacterial viruses on the surface of an object and in the air, but the KrCl excimer laser has a complex structure, needs to replace working gas regularly, and is not suitable for popularization as disinfection equipment.
Therefore, a new technical solution is needed to solve the above technical problems.
Disclosure of Invention
The application provides a tunable ultraviolet laser disinfection device safe to human body, which comprises an outer shell, be equipped with deep ultraviolet laser in the shell, deep ultraviolet laser passes through beam shaping system and is connected with scanning lens, deep ultraviolet laser still is connected with control system through laser communication cable, control system passes through scanning lens communication cable and is connected with scanning lens.
As a preferable scheme, the deep ultraviolet laser comprises a pumping source I, wherein a total reflecting mirror, a laser working substance, a reflecting mirror, a birefringent filter, an output mirror, a frequency doubling crystal, a quadruple frequency crystal and a filter are sequentially arranged behind the pumping source I, and a pumping source II is further arranged on one side of the reflecting mirror.
As a preferable scheme, the deep ultraviolet laser works in a way that the laser working substance is titanium sapphire crystal.
As a preferable scheme, the deep ultraviolet laser is operated in a continuous mode.
As a preferable scheme, the deep ultraviolet laser is operated in a pulse mode or a quasi-continuous mode.
As a preferable scheme, a Q-switching device is arranged between the birefringent filter and the output mirror.
As a preferable scheme, the Q-switching device is an electro-optic Q-switching crystal, an acousto-optic Q-switching crystal or a passive Q-switching crystal.
As a preferable scheme, the center wavelength of the output of the first pump source and the output of the second pump source is 450nm.
As a preferable scheme, the frequency doubling crystal is a frequency doubling crystal, the frequency doubling crystal is LBO, BBO, CLBO, biBO, and the matching mode can adopt critical phase matching or non-critical phase matching.
As a preferable scheme, the quadruple frequency crystal is BBO or KBBF, the BBO crystal adopts critical phase matching in a matching mode during frequency multiplication, and the KBBF crystal adopts a prism coupling technology during frequency multiplication to realize phase matching.
As a preferred solution, the deep ultraviolet laser achieves continuous wavelength tuning in the wavelength range of 200-225 nm.
The utility model comprises the following steps: the device comprises a deep ultraviolet laser, a pumping source, a total reflecting mirror, a laser working substance, an output mirror, a frequency doubling crystal, a quadruple frequency crystal, a beam shaping system, a scanning lens, a control system and a shell; ultraviolet disinfection can be performed by utilizing the principle that genetic materials in microorganisms are subjected to variation under ultraviolet irradiation, wherein ultraviolet light with the wavelength of 200-230nm has a good disinfection effect and does not penetrate through a stratum corneum of skin and a tear layer on the outer surface of eyes, so that real-time disinfection can be performed under the condition of people, and the ultraviolet disinfection device is particularly suitable for places with high personnel density and large personnel flow such as railway stations, exhibition halls and the like, and compared with a KrCl excimer lamp capable of emitting only 222nm single wavelength, the ultraviolet disinfection device can realize continuous wavelength adjustment within the wavelength range of 200-225nm, and is suitable for different disinfection scenes; if a pulse pumping or Q-switching working mode is adopted, the extremely high peak power can be obtained under lower average power, so that the sterilizing speed of bacteria and viruses is improved.
Drawings
FIG. 1 is a schematic structural view of the present application;
FIG. 2 is a schematic structural view of a fourth embodiment of the present application;
FIG. 3 is a schematic view of a fifth embodiment of the present application;
1. housing 2, deep ultraviolet laser 3, beam shaping system 4, scanning lens
5. Laser communication cable 6, control system 7 and scanning lens communication cable
8. Pump source one 9, total reflection mirror 10, laser working substance 11, reflection mirror
12. Birefringent filter 13, output mirror 14, frequency doubling crystal 15, and quadruple frequency crystal
16. Optical filter 17, pump source two 18, energy-transmitting optical fiber 19 and collimating lens
20. Focusing lens 21, plano-concave lens 22, energy-transmitting optical fiber one 23 and collimating lens one
24. Focusing lens one 25, laser focusing lens 26 and laser focusing lens one
28. Ultraviolet laser collimator 29, Q-switching device 30 and 45-degree reflector I
31. 45-degree mirror two.
Detailed Description
The following detailed description of specific embodiments of the utility model refers to the accompanying drawings; it should be noted that the detailed description herein is presented for purposes of illustration and explanation only and is not intended to limit the utility model.
Embodiment one:
the embodiment provides a tunable ultraviolet laser disinfection device safe to a human body, in particular to a tunable deep ultraviolet laser disinfection device based on four times of a titanium precious stone laser within a wave band range of 200-225nm, which comprises a shell 1, wherein a deep ultraviolet laser 2 is arranged in the shell 1, the working mode of the deep ultraviolet laser 2 is a pulse working mode, a continuous working mode or a quasi-continuous working mode, and the deep ultraviolet laser 2 realizes continuous wavelength adjustment within the wave band range of 200-225 nm; the deep ultraviolet laser 2 can realize wavelength conversion without changing laser crystal and laser working substance, and has accurate output wavelength and narrow line width; the deep ultraviolet laser 2 is connected with the scanning lens 4 through the beam shaping system 3, the deep ultraviolet laser 1 is also connected with the control system 6 through the laser communication cable 5, the control system 6 is preferably a singlechip in the prior art, and the specific model is not limited specifically; the control system 6 is connected with the scanning lens 4 through a scanning lens communication cable 7; the scanning lens 4 is preferably a galvanometer scanning in the prior art, and can perform point-by-point scanning and line-by-line scanning and killing by the galvanometer scanning mode, and can also shape linear light beams for scanning output and couple the linear light beams into optical fibers for scanning output after transmission.
The deep ultraviolet laser 1 emits deep ultraviolet laser, the deep ultraviolet laser is shaped through the beam shaping system 3, the shaped deep ultraviolet laser 1 is incident into the scanning lens 4, the control system 6 communicates with the deep ultraviolet laser 2 through the laser communication cable 5, the control system 6 communicates with the scanning lens 4 through the scanning lens communication cable 7, the control system 6 controls the output power, energy, peak power, pulse frequency and switching light time sequence of the deep ultraviolet laser 1, and the control system 6 controls the scanning speed, the scanning path and the scanning range of the scanning lens 4.
In the embodiment, the deep ultraviolet laser 1 is adopted to rapidly kill bacterial viruses in a large range.
Embodiment two:
the present embodiment specifically describes the deep ultraviolet laser 1, specifically:
the deep ultraviolet laser 1 comprises a pumping source I8, wherein a total reflection mirror 9, a laser working substance 10, a reflection mirror 11, a birefringent filter 12, an output mirror 13, a frequency doubling crystal 14, a quadruple frequency crystal 15 and a filter 16 are sequentially arranged behind the pumping source I8, and a pumping source II 17 is further arranged on one side of the reflection mirror 1; the arrangement of the first pumping source 8 and the second pumping source 1 makes the pumping mode of the embodiment double-end pumping; the central wavelength output by the first pumping source 8 and the second pumping source 17 is 450nm; the frequency doubling crystal 14 is a frequency doubling crystal, the frequency doubling crystal is one of LBO, BBO, CLBO, biBO, and the matching mode can adopt critical phase matching or non-critical phase matching; the quadruple frequency crystal 15 is BBO or KBBF, the BBO crystal adopts critical phase matching in the frequency multiplication matching mode, and the KBBF crystal adopts a prism coupling technology to realize phase matching in the frequency multiplication.
Preferably, the reflecting mirror 11 is a 45 ° reflecting mirror in the prior art, and preferably, the laser working substance 10 is a titanium sapphire crystal.
The pump source I8 and the pump source II 17 form a double-end pump structure, pump light is emitted, a laser working substance 10 is pumped through a total reflection mirror 9, the total reflection mirror 9 and an output mirror 13 form a fundamental frequency light resonant cavity, the oscillating fundamental frequency light is output by the output mirror, the fundamental frequency light is converted into deep ultraviolet laser light through a frequency doubling crystal 14 after being converted into four-time frequency crystal 15, the deep ultraviolet laser light is shaped through a beam shaping system 3, the shaped deep ultraviolet laser light is incident into a scanning lens 4, and a control system 6 controls the output power, energy, peak power, pulse frequency and switching light time sequence of the deep ultraviolet laser 2; the control system 6 controls the scanning speed, the scanning path and the scanning range of the scanning lens 4; the birefringent filters 12 with different rotation angles can enable the deep ultraviolet laser 1 to output different signal light wavelengths, and the deep ultraviolet laser output with different wavelengths can be obtained after frequency multiplication.
Embodiment III:
in this embodiment, the deep ultraviolet laser 1 is in a quasi-continuous working mode or a pulse working mode, the pump source one 8 and the pump source two 17 are semiconductor lasers for continuous laser output, and in this embodiment, a Q-switching device is arranged between the birefringent filter 12 and the output mirror 13, and pulse titanium sapphire laser is realized through the Q-switching device.
Preferably, the Q-switching device is an electro-optic Q-switching crystal, an acousto-optic Q-switching crystal or a passive Q-switching crystal.
Embodiment four:
the present example provides a specific implementation scheme, which is a deep ultraviolet laser disinfection device of pulse LD pumping titanium precious stone laser quadruple frequency 200-225nm, as shown in figure 2:
the laser comprises a first pumping source 8, wherein an energy-transmitting optical fiber 18, a collimating lens 19, a focusing lens 20, a concave-flat mirror 21, a laser working substance 10, a reflecting mirror 11, a birefringent filter 12, an output mirror 13, a laser focusing mirror 25, a frequency doubling crystal 14, a first 45-degree reflecting mirror 30, a second 45-degree reflecting mirror 31, a first laser focusing mirror 26, a quadruple frequency crystal 15, an optical filter 16, an ultraviolet laser collimating mirror 28 and a scanning lens 4 are sequentially arranged behind the first pumping source 8; a second pump source 17 is arranged on one side of the reflecting mirror 11, and an energy transmission optical fiber I22, a collimating lens I23 and a focusing lens I24 are sequentially arranged between the second pump source 17 and the reflecting mirror 11; the pump source I8 emits pump light, the pump light passes through the energy-transmitting optical fiber 18, the collimating lens 19 and the focusing lens 20 for collimation and focusing, and then the pump light is coupled into the laser working substance 10 through the total reflection mirror 9, in the embodiment, the total reflection mirror 9 adopts the flat concave mirror 21, the pump light emitted by the pump source II 17 enters from the other end of the laser working substance 10 after passing through the energy-transmitting optical fiber I22, the collimating lens I23 and the focusing lens I24, so that a double-end pump structure is formed, and the heat effect is buffered while the pump power is improved; the laser working substance 10 forms the necessary condition of laser generation under the action of pumping light, laser oscillation is generated in a resonant cavity formed by the plano-concave mirror 21 and the output mirror 13, the oscillation light realizes the fundamental frequency laser output of different wavelengths under the action of the birefringent filter 12, the fundamental frequency laser is focused into the frequency doubling crystal 14 through the laser focusing mirror 25, the frequency doubling crystal 14 adopts the frequency doubling crystal to generate frequency doubling laser, the frequency doubling laser is focused into the frequency quadrupling crystal 15 after passing through the first laser focusing mirror 26, the unconverted fundamental frequency light and the frequency doubling laser are filtered by the filter 16, the frequency quadrupling laser is reflected into the ultraviolet laser collimating mirror 28 for collimation, and the collimated frequency quadrupling ultraviolet laser is scanned point by point and line by line through the scanning lens 4 to kill bacteria and viruses in a long distance and a large range.
In this embodiment, the total output light power of the first pump source 8 and the second pump source 17 is preferably 16W, the center wavelength is 450nm, the repetition frequency is 10kHz, the core diameters of the energy-transmitting optical fiber 18 and the energy-transmitting optical fiber 22 are 400 μm, and the numerical aperture is 0.22.
Preferably, the focal lengths of the collimating lens 19 and the collimating lens 23 are 20mm, the focal lengths of the focusing lens 20 and the focusing lens 24 are 30mm, the collimating lens 19 and the focusing lens 20 form a 1:1 coupling focusing system, the collimating lens 23 and the focusing lens 24 form a 1:1 coupling focusing system, and the pump source 8 and the pump source 17 are focused on the laser working substance 10.
Preferably, the total reflection mirror 9 is a plano-concave mirror 21, coated with a film system with a high transmission of 450nm and a high reflection of 800-900 nm.
Preferably, the laser working substance 10 is a titanium sapphire crystal, which is cut along the c-axis at Brewster angle, the length of the laser working substance in the light transmission direction is 15mm, and the section is a square with side length of 5 mm; the crystal was placed on a controlled red copper heat sink on a semiconductor refrigerator at brewster's angle with respect to the pump laser, and the temperature of the copper block was set at 17 degrees celsius.
Preferably, the output mirror 13 is a plane mirror, and is coated with a film system with a transmittance of 15% of 800-900nm, and the length of the resonant cavity formed by the total reflection mirror 9 and the output mirror 13 is 200mm.
Preferably, the focal length of the laser focusing mirror 25 is 30mm, so as to focus the titanium sapphire laser on the frequency doubling crystal 14, thereby improving nonlinear conversion efficiency; more preferably, the frequency doubling crystal 14 is an LBO crystal of a size of 3X 10mm, and both ends of the crystal are plated with high-permeability film systems of 800-900nm and 400-450 nm.
Preferably, the focal length of the first laser focusing mirror 26 is 30mm, and the first laser focusing mirror is used for focusing the frequency-doubled blue light on the quadruple frequency crystal 15, so that the nonlinear conversion efficiency is improved; more preferably, the quadruple frequency crystal 15 is BBO crystal, the specification is 3×3×10mm, the two ends of the crystal are plated with high-transmission film systems of 420-450nm and 210-200nm, the ultraviolet laser output with the shortest wavelength of 210nm can be realized, if 200-210nm wave band is to be obtained, KBBF crystal can be selected, and meanwhile, the phase matching is carried out through a prism coupling technology, so that the short-wave deep ultraviolet laser output is realized.
Preferably, the filter 16 is coated with a film system with high reflection in the 200-225nm wave band and anti-reflection in the 400-450nm wave band, and the blue light remained after frequency doubling is filtered.
Preferably, the ultraviolet collimator lens 28 couples the filtered 200-225nm band deep ultraviolet laser light into the scanning lens 4 to scan the subject.
Fifth embodiment:
the present example provides another specific embodiment, which is a four-frequency 200-225nm deep ultraviolet laser disinfection device of an electro-optic Q-switched titanium precious stone laser, as shown in fig. 3:
the internal structure is as described in the fourth embodiment, and the difference is that the first pump source 8 and the second pump source 17 are semiconductor lasers outputting continuous laser, and a Q-switching device 23 is placed in a resonant cavity of the titanium sapphire laser, and the Q-switching device 23 is specifically arranged between the birefringent filter 12 and the output mirror 13; in the embodiment, an electro-optical Q-switching element is preferentially adopted, and pulse titanium sapphire laser is realized in an electro-optical Q-switching mode; in order to keep the voltage on the loaded electro-optical crystal synchronous with the wavelength tuning, a singlechip is used for controlling the rotation of the birefringent filter and the Q-switched voltage, so that the Q-switched pulse output is realized under the condition of different wavelength tuning.
The above embodiments are only preferred examples of the present utility model and are not intended to limit the present utility model, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present utility model should be included in the scope of the present utility model.
The utility model aims to rapidly and widely kill bacterial viruses by adopting deep ultraviolet laser; in order to ensure the safety of human bodies in the process of killing deep ultraviolet light, and simultaneously avoid the problems of low power density, short acting distance, high cost, difficult popularization and the like when an excimer lamp irradiates, a mode for realizing the killing of the deep ultraviolet laser near 222nm by using four times of frequency of a titanium precious stone laser is provided; the titanium sapphire crystal is a broadband laser medium with excellent performance, the fluorescence spectrum range of the titanium sapphire crystal can cover 670-1200nm, and certain energy is required when the titanium sapphire crystal is used for disinfection, so that 800-900nm close to an emission peak can be selected as an output wave band of the titanium sapphire laser, 200-225nm deep ultraviolet laser output can be obtained after subsequent frequency doubling, the wave band covers a disinfection wave band (207-222 nm) which is safe to a human body and is verified at present, the laser output in a pulse form can be obtained by matching with a pulse semiconductor laser pumping or Q-switching technology, the peak power of the laser output can be greatly improved, and the rapid disinfection of bacterial viruses is facilitated; compared with a KrCl excimer lamp and an excimer laser, the solid laser with the titanium sapphire crystal as a gain medium has adjustable output range, compact structure and convenient miniaturization, and is more suitable for large-scale popularization.
The utility model comprises the following steps: the device comprises a deep ultraviolet laser, a pumping source, a total reflecting mirror, a laser working substance, an output mirror, a frequency doubling crystal, a quadruple frequency crystal, a beam shaping system, a scanning lens, a control system and a shell; ultraviolet disinfection can be performed by utilizing the principle that genetic materials in microorganisms are subjected to variation under ultraviolet irradiation, wherein ultraviolet light with the wavelength of 200-230nm has a good disinfection effect and does not penetrate through a stratum corneum of skin and a tear layer on the outer surface of eyes, so that real-time disinfection can be performed under the condition of people, and the ultraviolet disinfection device is particularly suitable for places with high personnel density and large personnel flow such as railway stations, exhibition halls and the like, and compared with a KrCl excimer lamp capable of emitting only 222nm single wavelength, the ultraviolet disinfection device can realize continuous wavelength adjustment within the wavelength range of 200-225nm, and is suitable for different disinfection scenes; if a pulse pumping or Q-switching working mode is adopted, the extremely high peak power can be obtained under lower average power, so that the sterilizing speed of bacteria and viruses is improved.
The above devices, connection relationships, etc. which are not specifically described belong to the prior art, and the present utility model is not specifically described herein.
The preferred embodiments of the present application have been described in detail above with reference to the accompanying drawings, but the present application is not limited to the specific details of the foregoing embodiments, and various simple modifications may be made to the technical solutions of the present application within the scope of the technical concept of the present application, and all the simple modifications belong to the protection scope of the present application.
In addition, the specific features described in the foregoing embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various possible combinations of the present utility model are not described in detail.
Moreover, any combination of the various embodiments of the present application may be made without departing from the spirit of the present application, which is also to be considered as disclosed herein.
Claims (4)
1. The tunable ultraviolet laser disinfection device for human body safety comprises a shell (1), and is characterized in that a deep ultraviolet laser (2) is arranged in the shell (1), the deep ultraviolet laser (2) is connected with a scanning lens (4) through a beam shaping system (3), the deep ultraviolet laser (2) is also connected with a control system (6) through a laser communication cable (5), and the control system (6) is connected with the scanning lens (4) through a scanning lens communication cable (7); the deep ultraviolet laser (2) comprises a first pumping source (8), wherein a total reflecting mirror (9), a laser working substance (10), a reflecting mirror (11), a birefringent filter (12), an output mirror (13), a frequency doubling crystal (14), a quadruple frequency crystal (15) and a filter (16) are sequentially arranged behind the first pumping source (8), and a second pumping source (17) is further arranged on one side of the reflecting mirror (11).
2. A tunable ultraviolet laser disinfection device safe to the human body according to claim 1, wherein the laser working substance (10) is a titanium sapphire crystal.
3. A tunable ultraviolet laser disinfection device safe to human body according to claim 1, wherein a Q-switching device (29) is arranged between the birefringent filter (12) and the output mirror (13).
4. The tunable ultraviolet laser disinfection device safe to human body according to claim 1, wherein the center wavelength of the output of the pump source one (8) and the pump source two (17) is 450nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220899011.8U CN219185055U (en) | 2022-04-18 | 2022-04-18 | Tunable ultraviolet laser disinfection device safe for human body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220899011.8U CN219185055U (en) | 2022-04-18 | 2022-04-18 | Tunable ultraviolet laser disinfection device safe for human body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219185055U true CN219185055U (en) | 2023-06-16 |
Family
ID=86705839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220899011.8U Active CN219185055U (en) | 2022-04-18 | 2022-04-18 | Tunable ultraviolet laser disinfection device safe for human body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219185055U (en) |
-
2022
- 2022-04-18 CN CN202220899011.8U patent/CN219185055U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5744860B2 (en) | Side-pumped monolithic solid-state laser and its application | |
| CN106794357B (en) | Sterilizing unit | |
| JP2018047315A (en) | System and method for performing endodontic procedures with lasers | |
| AU776838B2 (en) | Short pulse mid-infrared parametric generator for surgery | |
| US20020133146A1 (en) | Short pulse mid-infrared parametric generator for surgery | |
| CN105980010A (en) | Multiple beam laser treatment device | |
| Elavarasu et al. | Lasers in periodontics | |
| WO1998041177A9 (en) | Short pulse mid-infrared parametric generator for surgery | |
| CN109091764B (en) | Multi-wavelength switchable optical fiber laser treatment device | |
| WO2015024094A1 (en) | Uv apparatus and method for air disinfection | |
| CN219185055U (en) | Tunable ultraviolet laser disinfection device safe for human body | |
| CN219185056U (en) | Deep ultraviolet laser disinfection device safe to human body | |
| CN116942864A (en) | Tunable ultraviolet laser disinfection device and method safe to human body | |
| CN102484346B (en) | A monolithic, side pumped solid-state laser and applications thereof | |
| EP1000383A1 (en) | Solid state uv laser | |
| RU133356U1 (en) | LASER MACHINE | |
| CN114498276A (en) | 222nm deep ultraviolet pulse laser source generation device | |
| Luo et al. | All-solid-state far-UVC pulse laser at 222 nm wavelength for UVC disinfection | |
| CN219208203U (en) | Deep ultraviolet laser disinfection device | |
| CN219185054U (en) | Continuous tunable deep ultraviolet laser disinfection device | |
| RU2141859C1 (en) | Method and device for treating destructive forms of lung tuberculosis by applying endocavitary irradiation with ultraviolet radiation | |
| JP2002253600A (en) | Medical laser curing instrument | |
| CN116942863A (en) | Continuously tunable deep ultraviolet laser disinfection device and disinfection method thereof | |
| RU2211715C2 (en) | Ultrasonic laser device for treating diseases accompanied with suppuration | |
| CN117224715A (en) | Deep ultraviolet laser disinfection device and disinfection method safe to human body |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |