CN218182702U - Anti-detuning optical fiber coupling dual-wavelength output solid laser - Google Patents

Anti-detuning optical fiber coupling dual-wavelength output solid laser Download PDF

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CN218182702U
CN218182702U CN202222776978.XU CN202222776978U CN218182702U CN 218182702 U CN218182702 U CN 218182702U CN 202222776978 U CN202222776978 U CN 202222776978U CN 218182702 U CN218182702 U CN 218182702U
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light
mirror
cavity
optical fiber
detuning
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张云
宋庆学
李晨
侯友良
张滨
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Xi'an Huiguang Electronic Technology Co ltd
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Xi'an Huiguang Electronic Technology Co ltd
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Abstract

The utility model discloses an anti imbalance optical fiber coupling dual wavelength output solid laser, include: a first light-gathering cavity; the first crystal rod is arranged in the first light-gathering cavity; the two first xenon lamps are respectively arranged in the first light condensation cavity; the first ultraviolet filtering type optical filter is arranged in the first light condensation cavity and is arranged between the first crystal bar and the first xenon lamp; a second light-focusing cavity; the second crystal rod is arranged in the second light-gathering cavity; two second xenon lamps are respectively arranged in the second light-gathering cavity; the second ultraviolet filtering type optical filter is arranged between the second crystal bar and the second xenon lamp; the reflector is arranged on one side of the first light gathering cavity and is arranged on the other side of the second light gathering cavity; and the output mirror is arranged on one side of the corner cube prism. The optical fiber coupling mechanism is arranged on one side of the pyramid prism; the optical fiber coupling mechanism includes: a beam splitter; a focusing mirror; a collimating mirror; a coupling mirror; an indicator light; the spectroscope, the focusing mirror, the collimating mirror and the coupling mirror are sequentially arranged along the laser propagation direction; the indicator light is arranged on one side of the spectroscope.

Description

Anti-detuning optical fiber coupling dual-wavelength output solid laser
Technical Field
The utility model relates to a solid laser technical field especially relates to an anti imbalance optical fiber coupling dual wavelength output solid laser.
Background
The dual-wavelength output long pulse solid laser is commonly used in the medical and cosmetic fields. Such as dental soft and hard tissue cutting, skin grooming, etc. However, due to the high manufacturing cost of the dual-wavelength output laser, the poor stability of the optical system and other reasons, the technology has not been effectively popularized, and the technology and products are leading abroad. Therefore, it is important to develop a long-pulse dual-wavelength laser with low price, small volume, light weight and good stability.
The existing long pulse solid laser has overlarge volume, high price, easy problem generation and poor product stability.
SUMMERY OF THE UTILITY MODEL
To the technical problem, the utility model provides an anti imbalance optical fiber coupling dual wavelength output solid laser, include:
a first light collection cavity;
the first crystal rod is arranged in the first light-gathering cavity;
the two first xenon lamps are respectively arranged in the first light condensation cavity;
the first ultraviolet filtering type optical filter is arranged in the first light condensation cavity and is arranged between the first crystal bar and the first xenon lamp;
a second light condensing cavity;
the second crystal rod is arranged in the second light-gathering cavity;
two second xenon lamps are respectively arranged in the second light-gathering cavity;
the second ultraviolet filtering type optical filter is arranged in the second light condensation cavity and is arranged between the second crystal bar and the second xenon lamp;
the reflector is provided with a concave surface with large curvature, is arranged on one side of the first light-gathering cavity and is used for reflecting laser generated by the first crystal bar and the second crystal bar;
the three reflecting surfaces of the pyramid prism form an included angle of 90 degrees with each other, the pyramid prism is arranged on the other side of the second light condensation cavity, and the laser path is changed in a reflection mode, so that the stability and the anti-maladjustment capability of the optical system are improved;
and the output mirror with a concave surface with large curvature is arranged on one side of the pyramid prism.
In order to achieve the purpose, the utility model discloses a realize through following technical scheme: the double-xenon-lamp single crystal rod is adopted, metal of a high-reflectivity gold-plated or silver-plated material is adopted as a light-gathering cavity at the periphery, and an ultraviolet filtering type optical filter is added as an ultraviolet light absorption medium in the double-xenon-lamp single crystal rod, so that the influence of ultraviolet light on a crystal, such as reduction of conversion efficiency, light spot deformation, a thermal lens effect, a thermal offset effect and the like, is reduced while the effective absorption peak of a crystal gain substance is ensured. The scheme adopts a folding resonant cavity consisting of a biconcave large-curvature reflector, an output mirror and a pyramid prism. The three reflecting surfaces of the pyramid prism mutually form an included angle of 90 degrees, and the pyramid prism has the characteristics of imbalance, high stability and the like, and is commonly used in the fields of military industry, scientific research and the like with high requirements on reliability and stability. The use of corner cubes inside the resonator cavity helps to improve the stability and anti-detuning capability of the optical system and enables a reduction in volume. The traditional light-gathering cavity and the laser resonant cavity are in a one-to-one matching relationship, and one set of light-gathering cavity is matched with one set of laser resonant cavity. Therefore, the structure is large in volume, the number of optical lenses used is increased, and the manufacturing cost is increased. And the difficulty is increased in the assembling and debugging process, and errors are easy to occur. The scheme effectively solves the problem by plating the optical dielectric film on the resonant cavity, the two groups of light-gathering cavities work respectively, and the crystal bars in the two groups of light-gathering cavities are different and can generate laser with different wavelengths, so that the two groups of light-gathering cavities share one set of laser resonant cavity. The cost is reduced, the resource utilization rate is improved, and the volume is reduced.
Compared with the prior art, the utility model has the advantages of it is following: low cost, small size, light weight and high stability.
More preferably, the method further comprises: the optical fiber coupling mechanism is arranged on the right side of the corner cube prism and is used for enabling laser to enter the optical fiber in an approximately parallel light mode; the optical fiber coupling mechanism includes:
a beam splitter; a focusing mirror; a collimating mirror; a coupling mirror; an indicator light; the spectroscope, the focusing mirror, the collimating mirror and the coupling mirror are sequentially arranged along the laser propagation direction; the indicator light is arranged on one side of the spectroscope.
Adopt above-mentioned technical scheme: the focusing lens, the collimating lens and the coupling lens jointly form a three-lens optical fiber coupling system, the three-lens optical fiber coupling system ensures the coupling efficiency and reliability, and simultaneously enables laser to enter the optical fiber in an approximately parallel light mode, and the phenomenon that the optical fiber is damaged due to the change of the position of the focal point can not occur because of the absence of the focal point. The maintenance cost is reduced, and the stability and the reliability of the system are improved. The laser and the indicating light are coaxially output in a spectroscope mode and enter the optical fiber through a three-lens optical fiber coupling system. The conventional optical fiber coupling system usually adopts a single lens or a double lens mode to perform long-focus optical fiber coupling so as to reduce the influence of optical path deviation on the optical fiber. But this increases the length of the coupling system and the volume.
More preferably, the first ultraviolet filtering filter is a long-wave pass filter, the second ultraviolet filtering filter is a long-wave pass filter, and the cutoff wavelength band is less than 450nm.
Further preferably, the inner wall of the first light-focusing chamber is coated with any one of a gold-plated layer and a silver-plated layer.
Further preferably, the inner wall of the second focusing chamber is coated with either a gold or silver plating layer.
More preferably, the mirror curvature is in the range of-8000 to-12000 mm for a curvature R, the output mirror curvature is in the range of-5000 to-8000 mm for a curvature R, the wavelength for the mirror plating film HR (HR means high reflectance) is 1064nm, and the wavelength for the output mirror plating film T (T means transmittance) is 1064nm for 50 to 90%.
More preferably, the focal length range of the focusing mirror is f = 200-300 mm, the focal length range of the collimating mirror is f = 100-150 mm, and the focal length range of the coupling mirror is f = -50-80 mm.
To sum up, the utility model discloses beneficial effect who has: the double-xenon-lamp single crystal rod is adopted, the periphery of the double-xenon-lamp single crystal rod is made of high-reflectivity gold-plated or silver-plated metal serving as a light gathering cavity, and an ultraviolet filtering type optical filter serving as an ultraviolet light absorbing medium is added inside the double-xenon-lamp single crystal rod, so that the influence of ultraviolet light on crystals is reduced while the effective absorption peak of crystal gain substances is guaranteed. Such as reduced conversion efficiency, spot distortion, thermal lensing, thermal polarization, etc. The scheme adopts a folding resonant cavity consisting of a biconcave large-curvature reflector, an output mirror and a pyramid prism. The three reflecting surfaces of the pyramid prism mutually form an included angle of 90 degrees, and the pyramid prism has the characteristics of imbalance, high stability and the like, and is commonly used in the fields of military industry, scientific research and the like with high requirements on reliability and stability. The use of corner cube prisms inside the resonator cavity helps to improve the stability and anti-detuning capability of the optical system and enables a reduction in volume. The traditional light-gathering cavity and the laser resonant cavity are in a one-to-one matching relationship, and one set of light-gathering cavity is matched with one set of laser resonant cavity. Therefore, the structure is large in volume, the number of optical lenses used is increased, and the manufacturing cost is increased. And the difficulty is increased in the assembling and debugging process, and errors are easy to occur. The scheme effectively solves the problem by plating the optical dielectric film on the resonant cavity, the two groups of light-gathering cavities work respectively, and the crystal rods in the two groups of light-gathering cavities are different and can generate laser with different wavelengths, so that the laser resonant cavities share one set. The cost is reduced, the resource utilization rate is improved, and the volume is reduced. The laser and the indicating light are coaxially output in a spectroscope mode and enter the optical fiber through a three-lens optical fiber coupling system. The conventional optical fiber coupling system usually adopts a single lens or a double lens mode to perform long-focus optical fiber coupling so as to reduce the influence of optical path deviation on the optical fiber. But this increases the length of the coupling system and the volume. The three-lens optical fiber coupling system ensures the coupling efficiency and reliability and simultaneously leads the laser to enter the optical fiber in the form of approximately parallel light, and the phenomenon that the optical fiber is damaged due to the change of the focal position can not occur because of no focal point. The maintenance cost is reduced, and the stability and the reliability of the system are improved.
Drawings
FIG. 1 is a schematic view of the overall structure of the present embodiment;
FIG. 2 is a partial schematic structural diagram of the present embodiment;
FIG. 3 is a partial schematic structural diagram of the present embodiment;
FIG. 4 is a partial schematic structural diagram of the present embodiment;
FIG. 5 is a partial schematic structural view of the present embodiment;
FIG. 6 is a partial schematic structural view of the present embodiment;
FIG. 7 is a partial schematic structural view of the present embodiment;
reference numerals are as follows: 1-a first light-gathering cavity; 2-a first crystal rod; 3-a first xenon lamp; 4-a first ultraviolet filtering type optical filter; 5-a second light-condensing cavity; 6-a second crystalline rod; 7-a second xenon lamp; 8-a second ultraviolet filtering type optical filter; 9-a mirror; a 10-cube corner prism; 11-an output mirror; 12-a beam splitter; 13-a focusing mirror; 14-a collimating mirror; 15-a coupling mirror; 16-an indicator light; 17-an optical fiber; 18-laser path; 19-indicating the light path.
Detailed Description
The present invention will be described in further detail with reference to the accompanying fig. 1-7.
An anti-detuning fiber-coupled dual-wavelength output solid-state laser as shown in fig. 1, 2, 3, 4, 5, 6 and 7, comprising: a first light-gathering cavity 1; the first crystal rod 2 is arranged in the first light gathering cavity 1; two first xenon lamps 3 are respectively arranged in the first light-gathering cavity 1; the first ultraviolet filtering type optical filter 4 is arranged in the first light gathering cavity 1 and is arranged between the first crystal rod 2 and the first xenon lamp 3; a second light-concentrating cavity 5; a second crystal rod 6 arranged in the second condenser cavity 5; the two second xenon lamps 7 are respectively arranged in the second light condensation cavity 5; the second ultraviolet filtering type optical filter 8 is arranged in the second condensation cavity 5 and is arranged between the second crystal rod 6 and the second xenon lamp 7; the reflector 9 is provided with a concave surface and a large curvature, is arranged on one side of the first light-gathering cavity 1 and is used for reflecting laser generated by the first crystal rod 2 and the second crystal rod 6; the pyramid prism 10, three reflecting surfaces of which mutually form an included angle of 90 degrees, is arranged at the other side of the second light condensation cavity 5, changes a laser path in a reflection mode, and improves the stability and the anti-detuning capability of an optical system; the output mirror 11, which has a concave surface with a large curvature, is provided on the side of the corner cube 10.
The double-xenon-lamp single crystal rod is adopted, metal of a high-reflectivity gold-plated or silver-plated material is adopted as a light-gathering cavity at the periphery, and an ultraviolet filtering type optical filter is added as an ultraviolet light absorption medium in the double-xenon-lamp single crystal rod, so that the influence of ultraviolet light on a crystal, such as reduction of conversion efficiency, light spot deformation, a thermal lens effect, a thermal offset effect and the like, is reduced while the effective absorption peak of a crystal gain substance is ensured. The scheme adopts a folding resonant cavity consisting of a biconcave large-curvature reflector 9, an output mirror 11 and a pyramid prism 10. The three reflecting surfaces of the pyramid prism 10 mutually form an included angle of 90 degrees, and the pyramid prism 10 has the characteristics of imbalance of beam-carrying, high stability and the like, and is commonly used in the fields with high requirements on reliability and stability, such as military industry, scientific research and the like. The use of the corner cube 10 inside the resonator cavity contributes to the stability and anti-detuning capability of the optical system and enables a reduction in volume. The traditional light-gathering cavity and the laser resonant cavity are in a one-to-one matching relationship, and one set of light-gathering cavity is matched with one set of laser resonant cavity. Therefore, the structure is large in volume, the number of optical lenses used is increased, and the manufacturing cost is increased. And the difficulty is increased in the assembling and debugging process, and errors are easy to occur. The scheme effectively solves the problem by plating the optical dielectric film on the resonant cavity, the two groups of light-gathering cavities work respectively, and the crystal rods in the two groups of light-gathering cavities are different and can generate laser with different wavelengths, so that the laser resonant cavities share one set. The cost is reduced, the resource utilization rate is improved, and the volume is reduced.
Specifically, still include: the optical fiber coupling mechanism is arranged on the right side of the corner cube prism 10 and is used for enabling the laser to enter the optical fiber 17 in an approximately parallel light mode; the optical fiber coupling mechanism includes: a spectroscope 12; a focusing mirror 13; a collimator lens 14; a coupling mirror 15; an indicator light 16; the spectroscope 12, the focusing mirror 13, the collimating mirror 14 and the coupling mirror 15 are sequentially arranged along the laser propagation direction; the indicator light 16 is arranged on one side of the spectroscope 12; the focusing mirror 13, the collimating mirror 14 and the coupling mirror 15 constitute a three-lens optical fiber coupling system, the three-lens optical fiber coupling system ensures the coupling efficiency and the reliability, and simultaneously enables the laser to enter the optical fiber 17 in an approximately parallel light form, and the phenomenon that the optical fiber 17 is damaged due to the change of the focal position can not occur because no focal point exists. The maintenance cost is reduced, and the stability and the reliability of the system are improved. The laser and the indicating light are coaxially output in the form of a spectroscope 12 and enter an optical fiber 17 through a three-lens optical fiber coupling system. The conventional optical fiber coupling system usually adopts a single lens or a double lens mode to perform long-focus optical fiber coupling so as to reduce the influence of optical path deviation on the optical fiber. But this increases the length of the coupling system and the volume.
Specifically, in one embodiment, the first uv-filtering filter 4 is a long-wavelength pass filter, the second uv-filtering filter 8 is a long-wavelength pass filter, and the cut-off band is < 450nm.
Specifically, the inner wall of the first light-gathering cavity 1 is coated with any one of a gold-plated layer and a silver-plated layer.
Specifically, the inner wall of the second condensing chamber 5 is coated with either a gold-plated layer or a silver-plated layer.
Specifically, the curvature R of the reflector 9 ranges from 8000 to-12000 mm, the curvature R of the output mirror 11 ranges from-5000 to-8000 mm, the wavelength of the coated HR (HR is high reflection) of the reflector 9 is 1064nm, and the wavelength of the coated T (T is transmittance) of the output mirror 11 is 1064nm, wherein 50 to 90 percent of the coating is T (T is transmittance).
Specifically, the focal length range of the focusing mirror is f = 200-300 mm, the focal length range of the collimating mirror is f = 100-150 mm, and the focal length range of the coupling mirror is f = -50-80 mm.
In summary, a double-xenon-lamp single crystal rod is adopted, the periphery of the double-xenon-lamp single crystal rod is made of metal made of high-reflectivity gold-plated or silver-plated materials and is used as a light-gathering cavity, and an ultraviolet filtering type optical filter is added inside the double-xenon-lamp single crystal rod and is used as an ultraviolet light absorption medium, so that the influence of ultraviolet light on a crystal, such as reduction of conversion efficiency, spot deformation, thermal lens effect, thermal offset effect and the like, is reduced while the effective absorption peak of a crystal gain substance is ensured. The scheme adopts a folding resonant cavity consisting of a biconcave large-curvature reflector 9, an output mirror 11 and a pyramid prism 10. The three reflecting surfaces of the pyramid prism 10 mutually form an included angle of 90 degrees, and the pyramid prism 10 has the characteristics of imbalance of beam-carrying, high stability and the like, and is commonly used in the fields with high requirements on reliability and stability, such as military industry, scientific research and the like. The use of the corner cube 10 inside the resonator cavity contributes to the stability and anti-detuning capability of the optical system and enables a reduction in volume. The traditional light-focusing cavity and the laser resonant cavity are in one-to-one matching relationship, and one set of light-focusing cavity is matched with one set of laser resonant cavity. Therefore, the structure is large in volume, the number of optical lenses used is increased, and the manufacturing cost is increased. And the difficulty is increased in the assembling and debugging process, and errors are easy to occur. The scheme effectively solves the problem by plating the optical dielectric film on the resonant cavity, the two groups of light-gathering cavities work respectively, and the crystal rods in the two groups of light-gathering cavities are different and can generate laser with different wavelengths, so that the laser resonant cavities share one set. The cost is reduced, the resource utilization rate is improved, and the volume is reduced. The laser and the indicating light are coaxially output in the form of a spectroscope 12 and enter the optical fiber through a three-lens optical fiber coupling system. The conventional optical fiber coupling system usually adopts a single lens or a double lens mode to perform long-focus optical fiber coupling so as to reduce the influence of optical path deviation on the optical fiber. But this increases the length of the coupling system and the volume. The three-lens optical fiber coupling system ensures the coupling efficiency and reliability and simultaneously leads the laser to enter the optical fiber in the form of approximately parallel light, and the phenomenon that the optical fiber is damaged due to the change of the focal position can not occur because of no focal point. The maintenance cost is reduced, and the stability and the reliability of the system are improved.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the present invention.

Claims (7)

1. An anti-detuning optical fiber coupling dual-wavelength output solid laser is characterized by comprising:
a first concentrating cavity (1);
the first crystal rod (2) is arranged in the first light-gathering cavity (1);
the two first xenon lamps (3) are respectively arranged in the first light-gathering cavity (1);
the first ultraviolet filtering type optical filter (4) is arranged in the first light gathering cavity (1) and is arranged between the first crystal rod (2) and the first xenon lamp (3);
a second light-concentrating cavity (5);
the second crystal rod (6) is arranged in the second light condensation cavity (5);
two second xenon lamps (7) are respectively arranged in the second condensing cavity (5);
the second ultraviolet filtering type optical filter (8) is arranged in the second light condensation cavity (5) and is arranged between the second crystal rod (6) and the second xenon lamp (7);
the reflector (9) is arranged on one side of the first light-gathering cavity (1) and is used for reflecting laser generated by the first crystal rod (2) and the second crystal rod (6);
the pyramid prism (10) is arranged on the other side of the second light condensation cavity (5), and the laser path is changed in a reflection mode, so that the stability and the anti-maladjustment capability of the optical system are improved;
the output mirror (11) is arranged on one side of the corner cube prism (10);
and the optical fiber coupling mechanism is arranged on the right side of the corner cube prism (10) and is used for enabling the laser to enter the optical fiber (17) in an approximately parallel light mode.
2. The detuning-resistant fiber-coupled dual-wavelength output solid-state laser of claim 1, wherein the fiber-coupling mechanism comprises:
the focusing mirror (13) is arranged on the right side of the corner cube prism (10);
the collimating lens (14) is arranged on the right side of the focusing lens (13), and the central line of the collimating lens (14) is superposed with the central line of the focusing lens (13);
the coupling mirror (15) is arranged on the right side of the collimating mirror (14), and the central line of the coupling mirror is superposed with the central line of the collimating mirror (14);
the indicator light (16) is arranged on the right side of the corner cube prism (10) and used for emitting indicating light;
and the spectroscope (12) is arranged between the pyramid prism (10) and the focusing mirror (13) and is used for reflecting the indicating light emitted by the indicating lamp (16) to the focusing mirror (13).
3. Detuning-resistant fiber-coupled dual-wavelength output solid-state laser according to claim 2, wherein the first ultraviolet-filtering filter (4) is a long-wave pass filter, the second ultraviolet-filtering filter (8) is a long-wave pass filter, and the cut-off band is less than 450nm.
4. The detuning-resistant fiber-coupled dual-wavelength output solid-state laser according to claim 3, wherein the inner wall of the first light-focusing cavity (1) is coated with any one of gold-plated layer or silver-plated layer.
5. The detuning-resistant fiber-coupled dual-wavelength output solid-state laser according to claim 4, wherein the inner wall of the second focusing cavity (5) is coated with any one of a gold-plated layer and a silver-plated layer.
6. The detuning-resistant fiber-coupled dual-wavelength output solid-state laser according to claim 5, wherein the curvature of the reflector (9) is in a range of-8000-12000 mm, the curvature of the output mirror (11) is in a range of-5000-8000 mm, the reflector (9) is coated with HR having a wavelength of 1064nm, and the output mirror (11) is coated with T = 50-90% having a wavelength of 1064nm.
7. The detuning-resistant optical fiber coupling dual-wavelength output solid-state laser device according to claim 6, wherein the focal length f of the focusing mirror (13) is in a range of 200-300 mm, the focal length f of the collimating mirror (14) is in a range of 100-150 mm, and the focal length f of the coupling mirror (15) is in a range of-50-80 mm.
CN202222776978.XU 2022-10-20 2022-10-20 Anti-detuning optical fiber coupling dual-wavelength output solid laser Active CN218182702U (en)

Priority Applications (1)

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CN202222776978.XU CN218182702U (en) 2022-10-20 2022-10-20 Anti-detuning optical fiber coupling dual-wavelength output solid laser

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Application Number Priority Date Filing Date Title
CN202222776978.XU CN218182702U (en) 2022-10-20 2022-10-20 Anti-detuning optical fiber coupling dual-wavelength output solid laser

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