CN217087126U - Transmission type multi-pumping disc laser - Google Patents
Transmission type multi-pumping disc laser Download PDFInfo
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- CN217087126U CN217087126U CN202221144115.4U CN202221144115U CN217087126U CN 217087126 U CN217087126 U CN 217087126U CN 202221144115 U CN202221144115 U CN 202221144115U CN 217087126 U CN217087126 U CN 217087126U
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Abstract
The utility model discloses a transmission-type multi-pumping disk laser, which comprises a pumping light source, a multi-pass amplifying unit, a disk crystal unit and a resonant cavity output unit; the multi-pass amplifying unit comprises a transmission focusing mirror and a folding mirror group, a circular light through hole is formed in the middle of the transmission focusing mirror, the folding mirror group is arranged on one side of the transmission focusing mirror and comprises a plurality of folding reflecting mirrors, and the plurality of folding reflecting mirrors surround into an arc shape matched with the transmission focusing mirror; the pump light source is arranged on one side of the folding mirror group far away from the transmission focusing mirror, the disc crystal unit is arranged on one side of the transmission focusing mirror far away from the folding mirror group, and the position of the disc crystal unit is overlapped with the focus of the transmission focusing mirror. The utility model adopts the above structure a many times of transmission-type pumping disc laser can make things convenient for effectually assembles the debugging outside the laser, has reduced the assembly and has installed the degree of difficulty, has increased light path stability and reliability.
Description
Technical Field
The utility model relates to a laser instrument technical field especially relates to a transmission-type multiple pumping disc laser instrument.
Background
The disc laser belongs to one of high-end high-power solid lasers, and the disc laser adopts a lamellar structure (with the thickness of 0.2-0.4 mm), adopts an axial surface cooling mode, greatly reduces the thermal distortion and the thermal lens effect of a laser crystal, and is favorable for obtaining laser output with high conversion efficiency, high average power and high beam quality. However, because the sheet-like geometry has the disadvantage of small absorption length of the pump light, in order to improve the absorption efficiency of the pump light, the multiple pumping technology and the light spot homogenization technology are core technologies for the high-efficiency and stable operation of the high-power disc solid laser. In 2003, Steffen Erhard et al proposed a spatially rotating multiple pumping arrangement with a single paraboloid and a polygon prism (see US 6577666B 2). In 2005, SteffenErhand et al improved the above scheme to provide a scheme for realizing a beam space rotation multiple pumping technique based on a single paraboloid and two large prisms, and realized pumping of pump light for 32 times, so that the pump light was effectively utilized (see US patent US6891874B 2); in 2008, juxiao et al propose a multiple pumping scheme based on a symmetric conjugate dual paraboloid to realize multiple transmission of pumping spots, wherein the pumping times are related to an included angle between a laser crystal and a correcting mirror (see chinese patent ZL 200810048527.6). In 2011, zhuangzhi et al proposed a novel multiple pumping scheme in which a single paraboloid and two prisms are used to implement spatial translation, and the two prisms are located in the 1, 3 or 2, 4 quadrants of the space, respectively (see chinese patent 201110119043.8). In 2018, zhuiguangzhi et al proposed a multi-pumping scheme based on three paraboloids, which realizes spatial translation of pumping spots through the three paraboloids, so that pumping light is effectively utilized (see chinese patent 201811002004.8).
The multi-pumping technology can be used for constructing a general V-cavity disc laser. The scheme of Steffenrehand et al and Zhuguang et al based on a single paraboloid and two prisms can realize that the folding angle of the V-shaped cavity is changed from 0 degree to 22 degrees, and the scheme of Zhuxian et al can realize that the folding angle of the V-shaped cavity is changed from 20 degrees to 40 degrees. The scheme based on three paraboloids of Zhuguang Zhi et al can realize that the folding angle of the V-shaped cavity is changed in a large-angle range (0-40 degrees), but the pumping times are severely limited by the size of a device, and multiple paraboloids are complex to process, expensive and difficult to actually assemble and adjust.
Therefore, the existing pump disc laser has the problems of high difficulty in production and installation technology and high difficulty in installation and debugging.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a transmission-type is pumping video disc laser many times can make things convenient for effectually assembles the debugging outside the laser, has reduced the assembly and has installed the degree of difficulty, has increased light path stability and reliability.
In order to achieve the above object, the present invention provides a transmission-type multi-pumping disk laser, which comprises a pumping light source, a multi-pass amplifying unit, a disk crystal unit and a resonant cavity output unit;
the multi-pass amplifying unit comprises a transmission focusing mirror and a folding mirror group, a circular light through hole is formed in the middle of the transmission focusing mirror, the folding mirror group is arranged on one side of the transmission focusing mirror and comprises a plurality of folding reflecting mirrors, and the plurality of folding reflecting mirrors surround into an arc shape matched with the transmission focusing mirror;
the pump light source is arranged on one side of the folding mirror group far away from the transmission focusing mirror, the disc crystal unit is arranged on one side of the transmission focusing mirror group far away from the folding mirror group, and the position of the disc crystal unit is overlapped with the focus of the transmission focusing mirror;
the resonant cavity output unit is arranged on one side of the folding mirror group, which is far away from the transmission focusing mirror, and comprises a total reflection mirror and an output mirror, and the total reflection mirror, the output mirror and the disc crystal unit jointly form a laser resonant cavity.
Preferably, the folding mirror group is an integrated structure consisting of a plurality of folding mirrors, and the number of the folding mirrors of the folding mirror group is adjustable.
Preferably, the folding mirror group is provided with a pump light inlet and a pump light outlet.
Preferably, the folding reflector comprises two identical right-angle prisms, and the two right-angle prisms are arranged symmetrically with each other.
Preferably, both sides of the transmission focusing mirror are of cambered surface structures.
Therefore, the utility model adopts the above structure a many times of transmission-type pump disc laser can make things convenient for effectually to assemble the debugging outside the laser, has reduced the assembly and has installed the degree of difficulty, has increased light path stability and reliability.
The technical solution of the present invention is further described in detail by the accompanying drawings and examples.
Drawings
FIG. 1 is a schematic diagram of an embodiment of a transmission-type multi-pumped disk laser of the present invention;
FIG. 2 is a front view of an embodiment of a transmission multiple pumped disc laser of the present invention;
fig. 3 is a side view of an embodiment of a transmissive multi-pumped disc laser.
Reference numerals:
1. a pump light source; 2. a multipass amplification unit; 3. a disc crystal unit; 4. a resonant cavity output unit; 5. a transmissive focusing mirror; 6. a light through hole; 7. a folding mirror; 8. a pump light inlet; 9. a pump light outlet; 10. a total reflection mirror; 11. and an output mirror.
Detailed Description
The technical solution of the present invention is further explained by the accompanying drawings and examples.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which the invention belongs. The use of "first," "second," and similar terms in the description herein do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
Examples
Referring to fig. 1 to 3, as shown in the drawings, the present invention provides a transmissive multi-pumped disc laser, which includes a pump light source 1, a multi-pass amplifying unit 2, a disc crystal unit 3, and a resonant cavity output unit 4. The multi-pass amplifying unit 2 comprises a transmission focusing lens 5 and a folding lens group, both sides of the transmission focusing lens are of arc-surface structures, the middle of the transmission focusing lens 5 is provided with a circular light through hole 6, the folding lens group is arranged on one side of the transmission focusing lens 5 and comprises a plurality of folding reflectors 7, and the plurality of folding reflectors 7 are surrounded into an arc shape matched with the transmission focusing lens 5. The folding lens group reflects light rays in parallel for many times, the light rays are reflected to irradiate on the disc crystal unit 3 through the focusing lens and then are reflected back to the transmission focusing lens 5 through the disc to form a multi-pass amplified light path.
The folding mirror group is an integrated structure consisting of a plurality of folding mirrors 7, and the number of the folding mirrors 7 of the folding mirror group is adjustable. The number of the folding reflectors 7 can be determined according to the number of times of transmission of the pump light, then the folding reflectors 7 are directly placed, and after the folding reflectors are debugged, the folding mirror group with the integrated structure is processed. When the laser is installed, the folding lens group is directly installed at the determined position on the laser, the circle center of the folding lens group and the circle center of the light through hole 6 are ensured to be on the same axis, the laser is simple and convenient, and the installation difficulty is reduced.
The folding mirror group is provided with a pump light inlet 8 and a pump light outlet 9, the pump light inlet 8 is used for the incidence of pump light, and the pump light outlet 9 is used for the output of pump light. The folding reflector 7 comprises two identical right-angle prisms, and the two right-angle prisms are symmetrically arranged with each other, so that a 90-degree angle is formed between the two right-angle prisms, and the refraction of pump light is realized.
The pump light source 1 is arranged on one side of the folding mirror group far away from the transmission focusing mirror and is used for generating collimated pump light. The disc crystal unit 3 is arranged at one side of the transmission focusing mirror far away from the folding mirror group, and the position of the disc crystal unit 3 is overlapped with the focus of the transmission focusing mirror. The resonant cavity output unit 4 is arranged on one side of the folding mirror group far away from the transmission focusing mirror, the resonant cavity output unit 4 comprises a total reflection mirror 10 and an output mirror 11, and the total reflection mirror 10, the output mirror 11 and the disc crystal unit 3 together form a laser resonant cavity. The disc crystal unit 3 is excited to generate oscillation laser, the oscillation laser can be transmitted back and forth in the laser resonant cavity, and a part of the oscillation laser can be output from the output mirror 11, so that high-power and high-beam-quality laser output is realized.
The pump light enters the multi-pass amplifying unit, is gathered on the disc crystal unit through the transmission focusing lens, then is reflected through the transmission focusing lens and then is collimated and incident on one folding reflecting mirror on the folding mirror group, then is reflected twice through the folding mirror group and horizontally translates one position and then is reflected back to the transmission focusing lens, then is focused on the disc crystal unit and then is reflected back to the transmission focusing lens, and is collimated and incident on the other folding reflecting mirror on the folding mirror group after passing through the transmission focusing lens again, and so on until the transmission of the pump light is completed, the principle that the parallel light must pass through a focus through the focusing lens and then exits in parallel after passing through the focusing lens is fully utilized.
Therefore, the utility model adopts the above structure a many times of transmission-type pump disc laser, lead to the integrative structure of folding mirror group in the amplification unit more, can make things convenient for effectually assembling and debugging outside the laser, reduced the assembly and installed the degree of difficulty and increased the light path stability simultaneously and reliability, solve the problem that the assembly of being not convenient for was adjusted the high assembly difficulty of the processing degree of difficulty.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the preferred embodiments, those skilled in the art should understand that: the technical solution of the present invention can still be modified or replaced by other equivalent means, and the modified technical solution can not be separated from the spirit and scope of the technical solution of the present invention.
Claims (5)
1. A transmission type multi-pumping disc laser is characterized in that: comprises a pump light source, a multi-pass amplifying unit, a disc crystal unit and a resonant cavity output unit;
the multi-pass amplifying unit comprises a transmission focusing mirror and a folding mirror group, a circular light through hole is formed in the middle of the transmission focusing mirror, the folding mirror group is arranged on one side of the transmission focusing mirror and comprises a plurality of folding reflecting mirrors, and the plurality of folding reflecting mirrors surround into an arc shape matched with the transmission focusing mirror;
the pump light source is arranged on one side of the folding mirror group far away from the transmission focusing mirror, the disc crystal unit is arranged on one side of the transmission focusing mirror group far away from the folding mirror group, and the position of the disc crystal unit is overlapped with the focus of the transmission focusing mirror;
the resonant cavity output unit is arranged on one side of the folding mirror group, which is far away from the transmission focusing mirror, and comprises a total reflection mirror and an output mirror, and the total reflection mirror, the output mirror and the disc crystal unit jointly form a laser resonant cavity.
2. The transmissive multi-pumped disc laser of claim 1, wherein: the folding mirror group is of an integrated structure consisting of a plurality of folding mirrors, and the number of the folding mirrors of the folding mirror group is adjustable.
3. The transmissive multi-pumped disc laser of claim 1, wherein: and the folding mirror group is provided with a pump light inlet and a pump light outlet.
4. The transmissive multi-pumped disc laser of claim 1, wherein: the folding reflector comprises two identical right-angle prisms, and the two right-angle prisms are symmetrically arranged.
5. The transmissive multi-pumped disc laser of claim 1, wherein: and both sides of the transmission focusing lens are both arc-surface structures.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221144115.4U CN217087126U (en) | 2022-05-12 | 2022-05-12 | Transmission type multi-pumping disc laser |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221144115.4U CN217087126U (en) | 2022-05-12 | 2022-05-12 | Transmission type multi-pumping disc laser |
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| CN217087126U true CN217087126U (en) | 2022-07-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115051233A (en) * | 2022-08-17 | 2022-09-13 | 中国科学院长春光学精密机械与物理研究所 | Optical path multiplexing laser amplifier |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115051233A (en) * | 2022-08-17 | 2022-09-13 | 中国科学院长春光学精密机械与物理研究所 | Optical path multiplexing laser amplifier |
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