CN209747891U - On-line optical isolator type laser - Google Patents
On-line optical isolator type laser Download PDFInfo
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- CN209747891U CN209747891U CN201920758479.3U CN201920758479U CN209747891U CN 209747891 U CN209747891 U CN 209747891U CN 201920758479 U CN201920758479 U CN 201920758479U CN 209747891 U CN209747891 U CN 209747891U
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Abstract
the utility model provides an online optical isolator formula laser. The online optical isolator type laser comprises a shell, a laser, an online optical isolator, a first linear light guide structure and a collimator. The shell surrounds and defines a containing space. The laser and the online optical isolator are accommodated in the accommodating space. The collimator is disposed outside the housing. The collimator is disposed outside the housing as an output section by disposing the laser and the in-line optical isolator together inside the housing. And connecting the collimator with the in-line optical isolator through the first linear light guiding structure. The structure of the on-line optical isolator type laser can be realized flexibly. Because the output part is small in size and light in weight, the output part can move freely and has strong controllability. And the online optical isolator is attached to a radiating element inside the laser, so that the temperature controllability is high.
Description
Technical Field
The utility model relates to the field of laser technology, especially, relate to an online optical isolator formula laser.
Background
The fiber laser has the advantages of good reliability, high efficiency, low cost, high beam quality and strong tunability.
in the operation process of the optical fiber laser, the laser beam has return light in the laser wavelength conversion process, and the stability of the laser is easily damaged by the return light. In order to prevent the adverse effect of the reflected laser light, the reflected light must be isolated at the beam output end by an optical isolator. The optical isolator is one of the most important passive optical devices in the laser, and the experience in the processing process is directly influenced by the size and the environmental adaptability of the optical isolator except that the performance of the optical isolator is concerned.
at present, the laser output part of the laser in the industry is formed by a free space isolator and a collimator. The laser output portion of the laser is bulky due to the relatively large volume and weight of the free-space isolator. The laser is inconvenient to use in the processing process, and the handheld operation is also inconvenient.
SUMMERY OF THE UTILITY MODEL
In view of the above, it is desirable to provide an in-line opto-isolator laser that addresses the above-mentioned problems.
the utility model provides an online optical isolator formula laser. The method comprises the following steps:
A housing defining a receiving space;
a laser housed in the housing space;
The online optical isolator is accommodated in the accommodating space, and laser emitted by the laser is transmitted to a next optical path component through the online optical isolator and reflected laser is blocked;
a first linear light guide structure;
The collimator set up in the outside of casing, and pass through first linear light-directing structure with online optical isolator leaded light connects, the laser process of laser emission passes through behind the online optical isolator, through the collimator collimation.
In one embodiment, the first linear light guide structure includes opposing input and output ends, the input end being in light-conducting connection with the in-line optical isolator and the output end being in light-conducting connection with the collimator.
In one embodiment, the first linear light guiding structure is an optical fiber.
In one embodiment, the laser comprises:
A laser seed source for generating seed light;
The first optical isolator is used for blocking the return light of the laser and preventing the return light from damaging the laser seed source; and
and the first amplifier is used for amplifying the power of the laser.
In one embodiment, the laser further comprises:
The second optical isolator is used for blocking the return light of the laser and preventing the return light from damaging the first amplifier;
And the second amplifier is used for amplifying the power of the laser.
In one embodiment, the laser further comprises a second linear light guiding structure optically connecting the laser seed source, the first optical isolator (124), the first amplifier, the second optical isolator, the second amplifier, the in-line optical isolator in a positive direction of the light path.
In one embodiment, the second linear light guiding structure is an optical fiber.
In one embodiment, further comprising: and the heat sink is arranged inside the shell.
in one embodiment, the in-line optical isolator is attached to the heat sink.
In one embodiment, the laser may employ a MOPA laser and a Q-switched laser.
the application provides online optical isolator formula laser will the laser with online optical isolator set up jointly in the inside of casing. The collimator is disposed outside the housing. The collimator with online optical isolator passes through first linear light guide structure connects. Because the laser with online optical isolator set up jointly in the inside of casing, online optical isolator formula laser can have less volume, thereby makes casing part is small, compact structure. The collimator set up in the casing outside is regarded as online optical isolator formula laser's output part, and through first linear light-directing structure with online optical isolator connects, can realize online optical isolator formula laser structure is nimble, has higher mobility. And at the same time, the output part can be made small in size and light in weight. Therefore, the output part can move freely and has strong controllability. Is convenient for being applied to various processing environments.
The foregoing description is only an overview of the technical solutions of the present application, and the present application can be implemented according to the content of the description in order to make the technical means of the present application more clearly understood, and the following detailed description of the present application is given in order to make the above and other objects, features, and advantages of the present application more clearly understandable.
drawings
FIG. 1 is a schematic diagram of an in-line opto-isolator laser according to an embodiment of the present application;
FIG. 2 is a schematic diagram of an in-line opto-isolator laser according to an embodiment of the present application;
FIG. 3 is a schematic diagram of an in-line optical isolator structure of an in-line optical isolator-type laser according to an embodiment of the present application;
fig. 4 is a schematic view of a first linear light guiding structure of an in-line opto-isolator laser according to an embodiment of the present application.
Detailed Description
in order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, an embodiment of the present application provides an in-line opto-isolator laser 100. The in-line optical isolator-based laser 100 includes a housing 110, a laser 120, an in-line optical isolator 130, a first linear light guiding structure 140, and a collimator 150. The housing 110 surrounds and defines a receiving space 112. The laser 120 and the in-line optical isolator 130 are housed within the housing space 112. The collimator 150 is disposed outside the housing 110. The first linear light guiding structure 140 optically couples the in-line optical isolator 130 to the collimator 150. The laser light emitted from the laser 120 is transmitted to the next optical circuit component through the in-line optical isolator 130. The in-line optical isolator 130 can block laser light that is emitted therefrom and reflected back by other devices. The laser light emitted from the laser 120 passes through the in-line optical isolator 130 and is collimated by the collimator 150.
the housing 110 serves as a receiving structure, and the material thereof is not limited and may be selected according to actual needs as long as a fixing structure can be formed. The material of the housing 110 may be organic polymer, metal or wood. The shape and size of the housing 110 are not limited, and may be selected according to actual needs as long as the housing space 112 can be formed to surround. It is understood that, in order to facilitate the first linear light guiding structure 140 entering the receiving space 112 to connect with the in-line optical isolator, the housing 110 may be further provided with a through hole. In one embodiment, the housing 110 is a rectangular parallelepiped, and the receiving space 112 is a rectangular parallelepiped receiving space. The material of the housing 110 is made of an organic polymer material.
The laser 120 is used for emitting laser and is accommodated in the housing 110. The laser 120 includes a laser seed source 122, a first optical isolator 124, and a first amplifier 126. The laser seed source 122 generates a seed laser. The seed laser is output through the first optical isolator 124 and then transmitted to the first amplifier 126. The first optical isolator 124 is disposed on the optical path between the laser seed source 122 and the first amplifier 126, and can block the laser light output by the first optical isolator 124 and reflected back by the first amplifier 126. Preventing the reflected laser light from damaging and interfering with the laser seed source 122.
The first optical isolator 124 is used to limit the direction of the seed laser, so that the seed laser can only transmit to the next optical path element in a single direction. The laser seed source 122 is prevented from being adversely affected by reflected laser light in the optical path for various reasons. The first optical isolator 124 can be selected according to actual needs, as long as the function of allowing the seed laser to transmit in one direction and preventing the seed laser from transmitting in the opposite direction can be achieved.
The first amplifier 126 is configured to amplify the laser light output through the first optical isolator 124, and transmit the amplified laser light to a next optical path element. In one embodiment of the present application, the first amplifier 126 may be composed of a pump source, an ytterbium-doped active fiber, and a pump combiner. In one embodiment of the present application, the pump source may employ a semiconductor pump laser. The pump source excites the laser light output through the first optical isolator 124. And the pump beam combiner couples a pump source signal and the excited laser signal into the ytterbium-doped active optical fiber. The ytterbium-doped active fiber plays a role in amplifying the laser.
Referring to fig. 2, in another embodiment of the present application, the laser 120 further includes a second optical isolator 128 and a second amplifier 129. The second optical isolator 128 is optically connected to the first amplifier 126. The second optical isolator 128 transmits the laser light output from the first amplifier 126 to the second amplifier 129.
the second amplifier 129 is optically connected to the second optical isolator 128. The second amplifier 129 amplifies the laser light output from the second optical isolator 128 and transmits the amplified laser light to the in-line optical isolator 130. The second optical isolator 128 is disposed on the optical path between the first amplifier 126 and the second amplifier 129, and blocks the laser light output through the second optical isolator 128 and reflected back by the second amplifier 129. Preventing the reflected laser light from damaging and interfering with the laser seed source 122 and the first amplifier 126.
The second optical isolator 128 restricts the direction of the laser light output from the first amplifier 126, so that the laser light can be transmitted to the next optical path element only in one direction. Preventing reflected laser light in the optical path for various reasons from damaging and interfering with the laser seed source 122 and the first amplifier 126. The second optical isolator 128 can be selected according to practical requirements as long as the functional requirements are met. In one embodiment of the present application, the second optical isolator 128 may be a single stage optical isolator or a dual stage optical isolator.
The second amplifier 129 is configured to amplify the laser light output through the second optical isolator 128, and transmit the amplified laser light to a next optical path element. In one embodiment of the present application, the second amplifier 129 may be composed of a pump source, an ytterbium-doped double-clad active fiber, and a pump combiner. In particular, the pump source may employ a semiconductor pump laser. The pump source energizes the laser light that is output through the second optical isolator 128. And coupling a pump source signal and the excited laser signal into the ytterbium-doped double-clad active fiber through the pump beam combiner. The ytterbium-doped double-clad active fiber plays a role in amplifying the laser.
In one embodiment of the present application, the laser 120 further includes a second linear light guide structure 141. The second linear light guiding structure 141 optically connects the laser seed source 122, the first optical isolator 124, the first amplifier 126, the second optical isolator 128, and the second amplifier 129 in a positive direction of the light path. The second linear light guide structure 141 connects the above optical path elements, and constitutes a complete optical path system of the laser 120. The second linear light guide structure 141 optically couples the laser 120 to the in-line optical isolator 130. The laser light output from the laser 120 is transmitted to the in-line optical isolator 130. In one embodiment of the present application, the second linear light guiding structure 141 may be an optical fiber.
In one embodiment of the present application, the laser 120 may be a MOPA laser or a Q-switched laser.
The in-line optical isolator 130 is disposed within the housing 110. The in-line opto-isolator 130 is connected to the second amplifier 129. The in-line optical isolator 130 transmits the laser light output through the second amplifier 129 to the next optical path element, and blocks the laser light output through the in-line optical isolator 130 and reflected back by the next optical path element.
referring to fig. 3, the in-line optical isolator 130 may be a single-stage isolator or a double-stage isolator. In one embodiment, in-line optical isolator 130 includes, in order along the forward optical axis, a first fiber collimator 131, an optical isolator core piece 133, and a second fiber collimator 135. A mirror assembly 132 is disposed in the optical path between the first fiber collimator 131 and the optical isolator core piece 133. The first fiber collimator 131, the mirror assembly 132, the optical isolator core piece 133, and the second fiber collimator 135 are disposed inside a package 137. The on-line optical isolator has the characteristics of low insertion loss, high isolation, strong power processing capability, high return loss, and high stability and reliability. A filter can be added inside the online optical isolator 130 according to requirements. The filter can filter noise factors such as undesired wavelengths, so that the wavelengths are not easy to drift, and the online optical isolator 130 is optimized.
Referring to fig. 4, the first linear light guiding structure 140 is used to optically connect the in-line optical isolator 130 and the collimator 150. The first linear light guide structure 140 is a linear structure, and has flexibility and is convenient to bend. The first linear light guide structure 140 has optical characteristics and transmission characteristics, and can transmit laser light to a next optical path element connected to the first linear light guide structure 140.
the first linear light guiding structure 140 includes opposite input and output ends 142 and 144. The input 142 is optically coupled to the in-line optical isolator 130 and the output 144 is optically coupled to the collimator 150. The first linear light guide structure 140 connects the housing 110 and the collimator 150, so that the collimator 150 disposed outside the housing 110 as an output end can move freely and flexibly. Therefore, the laser processing operation is more flexible and convenient, and more selectivity is provided for users. In one embodiment, the first linear light guide structure 140 may employ an optical fiber.
the collimator 150 is disposed outside the housing 110. The collimator 150 is optically coupled to the output 144 of the first linear light guide structure 140 and to the in-line optical isolator 130 via the input 142 of the first linear light guide structure 140. The collimator 150 is used for converting the laser light output by the in-line optical isolator 130 and outputting the converted laser light in parallel. Since the collimator 150 is disposed outside the housing 110, the collimator 150 can be handled by a hand during a laser machining operation of the in-line optical isolator laser 100. The laser processing technology which needs to be finely marked, welded, carved and the like is very convenient to operate, and the laser processing efficiency and precision can be improved.
The in-line opto-isolator fiber laser 100 also includes a heat sink element 160. The heat dissipation element 160 is installed inside the housing 110. The heat dissipation element 160 is used for dissipating heat of the laser 120 and the online optical isolator 130 inside the housing 110, so as to avoid the influence of the ambient temperature and the equipment temperature on the stability of the online optical isolator type fiber laser.
The in-line optical isolator 130 is attached to the heat sink 160. The heat sink 160 controls the operating temperature of the in-line optical isolator 130, and avoids the influence of the over-high temperature on the insertion loss and isolation of the in-line optical isolator 130, thereby improving the stability of the laser.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above examples only represent some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. An in-line opto-isolator laser, comprising:
a housing (110) defining a receiving space (112);
A laser (120) housed in the housing space (112);
An in-line optical isolator (130) accommodated in the accommodating space (112), wherein laser light emitted by the laser (120) is transmitted to a next optical path component through the in-line optical isolator (130) and reflected laser light is blocked;
a first linear light guiding structure (140); and
Collimator (150), set up in the outside of casing (110), and pass through first linear light guide structure (140) with online optical isolator (130) leaded light is connected, the laser process of laser instrument (120) transmission behind online optical isolator (130), pass through collimator (150) collimation.
2. The in-line optoisolator-type laser of claim 1, wherein the first linear light guiding structure (140) comprises opposing input (142) and output (144), the input (142) being in optical communication with the in-line optoisolator (130), the output (144) being in optical communication with the collimator (150).
3. The in-line optoisolator-type laser of claim 2, wherein the first linear light guiding structure (140) is an optical fiber.
4. The in-line opto-isolator laser of claim 1 wherein the laser (120) comprises:
A laser seed source (122) for generating a seed laser;
A first optical isolator (124), wherein the seed laser light is output after passing through the first optical isolator (124), and the first optical isolator (124) is used for blocking the return light of the seed laser light and preventing the return light from damaging the laser seed source (122); and
A first amplifier (126) for amplifying the power of the laser light output through the first optical isolator (124).
5. The in-line opto-isolator laser of claim 4 wherein the laser (120) further comprises:
A second optical isolator (128) for blocking return light of the laser light passing through the first amplifier (126) and preventing the return light from damaging the first amplifier (126); and
A second amplifier (129) for amplifying the power of the laser light passing through the second optical isolator (128).
6. The in-line opto-isolator laser of claim 5 wherein the laser (120) further comprises a second linear light guiding structure (141), the second linear light guiding structure (141) optically coupling the laser seed source (122), the first optical isolator (124), the first amplifier (126), the second optical isolator (128), the second amplifier (129) and the in-line optical isolator (130) in a positive optical path direction.
7. The in-line optoisolator-type laser of claim 6, wherein the second linear light guiding structure (141) is an optical fiber.
8. The in-line opto-isolator laser of claim 1 further comprising a heat sink element (160) disposed within the housing (110).
9. the in-line opto-isolator laser of claim 8 wherein the in-line opto-isolator (130) is bonded to the heat sink element (160).
10. the in-line opto-isolator laser of claim 1 wherein the laser (120) is a MOPA laser or a Q-switched laser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920758479.3U CN209747891U (en) | 2019-05-23 | 2019-05-23 | On-line optical isolator type laser |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920758479.3U CN209747891U (en) | 2019-05-23 | 2019-05-23 | On-line optical isolator type laser |
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| CN209747891U true CN209747891U (en) | 2019-12-06 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114137666A (en) * | 2021-11-24 | 2022-03-04 | 北京光润通科技发展有限公司 | One-way collimator assembly |
| CN115032745A (en) * | 2022-08-15 | 2022-09-09 | 光越科技(深圳)有限公司 | Online optical isolator |
-
2019
- 2019-05-23 CN CN201920758479.3U patent/CN209747891U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114137666A (en) * | 2021-11-24 | 2022-03-04 | 北京光润通科技发展有限公司 | One-way collimator assembly |
| CN115032745A (en) * | 2022-08-15 | 2022-09-09 | 光越科技(深圳)有限公司 | Online optical isolator |
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