CN103151690A - Solid laser with annular table-shaped reflecting prism - Google Patents
Solid laser with annular table-shaped reflecting prism Download PDFInfo
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- CN103151690A CN103151690A CN2013100251043A CN201310025104A CN103151690A CN 103151690 A CN103151690 A CN 103151690A CN 2013100251043 A CN2013100251043 A CN 2013100251043A CN 201310025104 A CN201310025104 A CN 201310025104A CN 103151690 A CN103151690 A CN 103151690A
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- state laser
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Abstract
Provided is a solid laser with an annular table-shaped reflecting prism. The solid laser comprises an output mirror 1, an annular table-shaped reflecting prism 2, annular solid laser gain medium 3, a full reflecting end annular lens 4, and a full reflecting mirror 5 which are successively arranged on a light path; and a resonant cavity is formed between the output mirror 1 and the full reflecting mirror 5.
Description
Technical field
The present invention relates to a kind of solid state laser, belong to field of lasers.
Background technology
Existing solid state laser is all generally simple plate the or columniform gain media that adopts, for such laser, if the transmitting power of needs increase laser needs to increase pump energy and the needs increase is plate or the sectional area (radius) of cylindrical gain media.If just simply increase pump energy may surpass the ability to bear of gain media, thereby gain media is produced permanent destruction, so need to increase the sectional area of gain media when increasing pump energy.But the sectional area of gain media new problem can occur again after increasing, these new problems comprise: the 1) increase of sectional area (being also the increase of radius) can make the radius of laser emitting light beam increase, just reduced to a certain extent the intensity (being also the Energy distribution in unit are) of laser after the radius of outgoing beam increases, this intensity for the laser beam that improves is disadvantageous; 2) sectional area become large after heat dissipation problem more outstanding because heat abstractor can only be distributed in the surrounding of gain media, sectional area is larger, causes heat abstractor poorer for the heat-sinking capability of gain media inside; 3) after radius increases, make the volume of gain media become large, after volume becomes greatly, the inhomogeneities of heat radiation will become more obvious, thereby cause the radial refractive index gradient variable of gain media large, and this makes the cross direction profiles of laser beam become poorer; 4) along with the increase of sectional area, the optical uniformity of pumping distributes also can variation.The present invention puts forward for this problem of the prior art, and a kind of high-intensity solid state laser is provided.
Summary of the invention
According to the present invention, a kind of solid state laser is provided, comprising: be arranged in order the outgoing mirror 1 of setting on light path, annulus platform shape reflecting prism 2, annular solid state laser gain medium 3, total reflection end annular lens 4, completely reflecting mirror 5; Form resonant cavity between outgoing mirror 1 and completely reflecting mirror 5;
Described pump light source adopts the fluorescent tube that arranges along the circumferential arrangement of this annular space, perhaps adopts the columnar light emitting array of the double-side that is comprised of light-emitting diode.
The thickness of the annulus post of described annular solid state laser gain medium is greater than the cylindrical radius of annular solid state laser gain medium.
1.5 times of the thickness of the annulus post of described annular solid state laser gain medium are to the cylindrical radius of annular solid state laser gain medium.
Description of drawings
Fig. 1 is the cross-sectional view of solid state laser of the present invention;
Fig. 2 is the light path schematic diagram of the intra resonant cavity of solid state laser of the present invention;
Embodiment
Below be further described in more detail for content of the present invention on basis by reference to the accompanying drawings.
Fig. 1 shows solid state laser cross-sectional view of the present invention, does not draw with some parts in this laser that facilitate of reading in order to draw, and has detailed description below the part that does not draw.In Fig. 1,1 expression outgoing mirror, it is semi-transparent semi-reflecting lens, 2 is annulus platform shape reflecting prism, 3 is annular solid state laser gain medium, and the gain medium of this annular comprises peripheral annulus post and is positioned at annulus post inner cylinder, leaves the space between the cylinder of peripheral annulus post and inside, 4 expression total reflection end annular lens, 5 expression completely reflecting mirrors.
what need simultaneously to consider is, because total reflection end annular lens 4 are that laser beam has been focused on completely reflecting mirror 5, for the slightly large laser of power, because the laser beam energy of focal position is strong especially, be easy to completely reflecting mirror 5 is produced injury, for this reason, need to increase a kind of optically filtering sheet between total reflection end annular lens 4 and completely reflecting mirror 5, this optical filter for the transmissivity of resonant laser light less than 10%, reflectivity is greater than 90%, like this, the laser beam that this optically filtering sheet is crossed in transmission can focus on completely reflecting mirror 5 equally as the seed light of laser resonance, simultaneously again can be because the energy of laser focusing bundle is crossed strong and completely reflecting mirror 5 is produced damage.This feature is as one of inventive point of the present invention, belong to us and propose first and be used for solving at device of the present invention of verifying effectively solves the acquisition of seed light and the method and apparatus that focus energy is crossed strong contradiction, well enlarged the applicability of apparatus of the present invention.
The below stresses the above-mentioned advantage of bringing that arranges:
1) completely reflecting mirror is positioned at the focus place of total reflection end annular lens, so just can be so that unified resonant cavity of formation that the laser with in the outer circle annulated column in the inner cylinder that is separated of gain media mixes, even laser beam be respectively in the inner cylinder that is separated with the outer circle annulated column in obtain gain, but because being shakes in same resonant cavity, so they have identical characteristic, and due to the annulus platform shape reflecting prism that has used given shape, the complete beam of laser bundle that spatially synthesizes closely in output, thereby make the laser beam intensity of output greatly be strengthened,
2) integrated in whole laser of the urine that arranges of the focal length of the annular lens of total reflection end, make the laser volume little;
3) pump arrangement is arranged in the space of the annular that leaves between the peripheral annulus post of annular solid state laser gain medium and inner cylinder, and be set to double-side, this makes the pumping of gain medium more even, simultaneously because gain medium is the two parts that separate on the space, thereby make each segment thickness all obtain reduction, this just makes radiating effect more, arrange simultaneously in the space of the annular that heat abstractor wherein can leave between gain media outside and peripheral annulus post and inner cylinder, and heat abstractor adopts existing available apparatus to get final product, repeat no more herein,
In order to realize dispelling the heat preferably and higher Laser output energy, preferably make the thickness (also namely inside and outside semidiameter) of the annulus post of annular solid state laser gain medium greater than the cylindrical radius of annular solid state laser gain medium, the thickness that preferably is set to the annulus post of annular solid state laser gain medium is 1.5 times of cylindrical radius of annular solid state laser gain medium.And the cylindrical diameter in annular solid state laser gain medium had better not be greater than 5cm, because when diameter during greater than 5cm, due to the effect of outer circle annulated column and pumping source, may produce larger impact for the cylinder gain media of inside.
Claims (5)
1. a solid state laser, comprising: be arranged in order the outgoing mirror 1 of setting on light path, annulus platform shape reflecting prism 2, annular solid state laser gain medium 3, total reflection end annular lens 4, completely reflecting mirror 5; Form resonant cavity between outgoing mirror 1 and completely reflecting mirror 5;
outgoing mirror 1 is semi-transparent semi-reflecting lens, is used for the oscillating laser in resonant cavity is exported, the annulus platform shape that has perforation centered by annulus platform shape reflecting prism 2, the round platform that has through hole centered by this annulus platform shape reflecting prism, this round platform comprises upper surface and the lower surface that is parallel to each other, and the area of upper surface is greater than lower surface, the lateral surface of this round platform and upper surface are in angle of 45 degrees, the diameter at the minimum diameter place of the centre bore of this round platform equals the diameter of the inner cylinder of annular solid state laser gain medium, and this centre bore comprises two parts, a part is for being parallel to the upper medial surface of this round platform lateral surface, a part is the lower inner surface perpendicular to the round platform lower surface in addition, thereby form a funnelform centre bore, the oscillation light that is produced by the cylinder in annular solid state laser gain medium passes through the vertical component of funnel-form centre bore just, the oscillation light that is produced by the peripheral annulus post of annular solid state laser gain medium successively incides on outgoing mirror 1 in the mode that parallels with the light of outgoing in cylinder after the reflection through the upper medial surface parallel with described lateral surface of the lateral surface of annulus platform shape reflecting prism and centre bore, and the inward flange of the upper medial surface parallel with the lateral surface of round platform is just in time incided in the inside edge of the loop laser that is produced by the peripheral annulus post of annular solid state laser gain medium, thereby the laser that makes laser that the annulus post produces and cylinder produce forms a whole laser beam in the mode of joining when penetrating this round platform, be provided with pump light source in the space of the annular that leaves between the peripheral annulus post of annular solid state laser gain medium and inner cylinder, the diameter of the through hole of total reflection end annular lens 4 centers is greater than the cylindrical diameter of annular solid state laser gain medium 3, and be less than the inside radius of the annulus post of annular solid state laser gain medium 3, and the focal length of these lens is short as far as possible, so that make being of compact construction of this laser, completely reflecting mirror 5 is positioned at the focus place of total reflection end annular lens, and, also has an optical filter between described total reflection end annular lens 4 and completely reflecting mirror 5.
2. solid state laser according to claim 1, described pump light source adopt the fluorescent tube that arranges along the circumferential arrangement of this annular space, perhaps adopt the columnar light emitting array of the double-side that is comprised of light-emitting diode.
3. solid state laser according to claim 1 and 2, the thickness of the annulus post of described annular solid state laser gain medium is greater than the cylindrical radius of annular solid state laser gain medium.
4. solid state laser according to claim 3,1.5 times of the thickness of the annulus post of described annular solid state laser gain medium are to the cylindrical radius of annular solid state laser gain medium.
5. according to claim 1 solid state laser, less than 10%, reflectivity is greater than 90% for the transmissivity of resonant laser light for described optical filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310025104.3A CN103151690B (en) | 2013-01-18 | 2013-01-18 | Solid laser with annular table-shaped reflecting prism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310025104.3A CN103151690B (en) | 2013-01-18 | 2013-01-18 | Solid laser with annular table-shaped reflecting prism |
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| Publication Number | Publication Date |
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| CN103151690A true CN103151690A (en) | 2013-06-12 |
| CN103151690B CN103151690B (en) | 2015-02-18 |
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| CN201310025104.3A Expired - Fee Related CN103151690B (en) | 2013-01-18 | 2013-01-18 | Solid laser with annular table-shaped reflecting prism |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109217077A (en) * | 2018-11-15 | 2019-01-15 | 云南大学 | A kind of tunable hollow laser of self-mixing |
| CN111014946A (en) * | 2020-01-19 | 2020-04-17 | 中国科学院宁波材料技术与工程研究所 | Water-guided laser processing device and processing system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2542652A1 (en) * | 1975-09-24 | 1977-07-28 | Siemens Ag | Laser with hollow cylindrical stimulated medium - has two excitation LED arrays, one inside and one outside cylindrical lager medium |
| US4751716A (en) * | 1986-05-01 | 1988-06-14 | Amada Engineering & Service Co., Inc. | Hollow cylindrical solid state laser medium and a laser system using the medium |
| CN101262113A (en) * | 2008-04-20 | 2008-09-10 | 华中科技大学 | A loop concave output mirror laser resonance cavity |
-
2013
- 2013-01-18 CN CN201310025104.3A patent/CN103151690B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2542652A1 (en) * | 1975-09-24 | 1977-07-28 | Siemens Ag | Laser with hollow cylindrical stimulated medium - has two excitation LED arrays, one inside and one outside cylindrical lager medium |
| US4751716A (en) * | 1986-05-01 | 1988-06-14 | Amada Engineering & Service Co., Inc. | Hollow cylindrical solid state laser medium and a laser system using the medium |
| CN101262113A (en) * | 2008-04-20 | 2008-09-10 | 华中科技大学 | A loop concave output mirror laser resonance cavity |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109217077A (en) * | 2018-11-15 | 2019-01-15 | 云南大学 | A kind of tunable hollow laser of self-mixing |
| CN109217077B (en) * | 2018-11-15 | 2019-08-27 | 云南大学 | A kind of tunable hollow laser of self-mixing |
| CN111014946A (en) * | 2020-01-19 | 2020-04-17 | 中国科学院宁波材料技术与工程研究所 | Water-guided laser processing device and processing system |
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| Publication number | Publication date |
|---|---|
| CN103151690B (en) | 2015-02-18 |
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