CN202159887U - Multi-lamp diffuse reflection condensation chamber used for high-power lamp-pumped laser - Google Patents
Multi-lamp diffuse reflection condensation chamber used for high-power lamp-pumped laser Download PDFInfo
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- CN202159887U CN202159887U CN2011201676850U CN201120167685U CN202159887U CN 202159887 U CN202159887 U CN 202159887U CN 2011201676850 U CN2011201676850 U CN 2011201676850U CN 201120167685 U CN201120167685 U CN 201120167685U CN 202159887 U CN202159887 U CN 202159887U
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Abstract
Provided is a multi-lamp diffuse reflection condensation chamber used for a high-power lamp-pumped laser. The multi-lamp diffuse reflection condensation chamber comprises a ceramic cavity, blocking corners, a ceramic reflection glaze layer, a laser crystal rod and N flash lamps. The ceramic cavity is provided with a multi-surface cylindrical inner cavity penetrating back and forth. The inner surface of the inner cavity is provided with the blocking corners which narrow gradually toward the center of the ceramic cavity and are crossed with the center of the ceramic cavity. The ceramic reflection glaze layer is coated on the inner surface of the multi-surface cylindrical inner cavity. The laser crystal rod is disposed in the axis center of the multi-surface cylindrical inner cavity. The N flash lamps are arranged at the periphery of the laser crystal rod in the multi-surface cylindrical inner cavity in a space rotary and symmetrical manner. N is a positive integer from 3 to 30. The symmetrical center line of each blocking corner is perpendicular to the connecting axial lines of two adjacent flash lamps. The top angle of each blocking corner is 1 to 2mm away from the laser crystal rod. Each blocking corner is from 10 degrees to 160 degrees, and the number of the blocking corners is equal to the number of the flash lamps. Cover plates are covered on the front surface and the back surface of the multi-surface cylindrical inner cavity. Cooling water is filled in the multi-surface cylindrical inner cavity. The multi-lamp diffuse reflection condensation chamber is simple in structure, high in pumping efficiency, fine in pumped uniformity, enables self absorption loss caused by mutual irradiation of the flash lamp to be reduced, and can be used for various large-power pulse lamp-pumped lasers and laser amplifiers.
Description
Technical field
The utility model belongs to the Solid State Laser technical field, and particularly a kind of novel many lamps that are used for the high power lamp pump laser overflow the anticoustic chamber.
Background technology
The pumping mode of solid state laser is divided into LD pumping and flash lamp pumping; The advantage of semiconductor pumping lamp pump on year-on-year basis has pumping transformation efficiency height, and volume is little, and is low in energy consumption; Advantages such as cooling pressure is little; But high for the needs peak power, particularly need huge single pulse energy pumping, repetition rate lower (under the situation below the hundreds of hertz); Or environment electromagnetics serious interference, surrounding air dust are more, ambient temperature receives under the bigger situation of externally temperature influence, and flash lamp pumping more possesses comparative advantages beyond doubt.The realization and the acquisition of high power laser light output at first will ensure pumping geometry reasonable in design, make more lamp participate in pumping, to offer the working-laser material more energy; Simultaneously, because under height discharge load, photoflash lamp itself is equivalent to a black matrix, in the design of pumping geometry, lets energy as much as possible fall on the laser crystal bar rather than and absorb by this " black matrix " of lamp.It is thus clear that the pumping geometry designs of laser-gathering cavity is the core of high power pulsed laser design, for high power solid state laser, such as the laser pump cavity more than the average power kilowatt, should realize high-transmission efficient, high temperature resistant, will to take into account pumping simultaneously even.Traditional mirror image chamber is difficult to meet the demands, and reference " big full circle metal light-gathering cavity " (utility model patent, CN2356438Y); " experimental study of brand-new type of cooling bielliptic(al) pump cavity " (used laser; In December, 1994, the 14th the 6th phase of volume) all run into pump energy supply with limited, problem such as uniformity is bad simultaneously; And adopt the common ceramic chamber or the cavity configuration of diffuse reflection powder; Just solved the problem of pumping homogeneity to a certain extent, all existed the defective that can't overcome, overflow anti-cavity configuration with reference to " Glass condenser cavity of yag laser and its preparation method " (patent of invention for the reinforcement of pumping ability and the improvement of pumping efficiency; The Beijing Opto-electrical Technology Research Institute, CN1585214A).
Summary of the invention
The purpose of the utility model is to overcome passing through of running in the present high power pulsed laser laser pump cavity design process to increase the photoflash lamp number to guarantee that under the reasonable load of photoflash lamp, increasing total pump injects energy; Because effective pumping efficiency that the dim body self-absorption that photoflash lamp shines mutually causes descends or the deficiency of lack of homogeneity; Being employed in ceramic inner surface structure directly increases the way at retaining angle; The light that the photoflash lamp discharge time is sent mainly all shines on the laser crystal bar, reduces shining the probability on other photoflash lamps, to ensure when the high power laser light pumping; Realize the pumping of many lamps high efficiency; With the more high power output of maximum realization laser, and practice thrift cost, raise the efficiency.
For achieving the above object, the technical scheme that the utility model adopts is following:
The many lamps that are used for the high power lamp pump laser that the utility model provides overflow the anticoustic chamber, and as shown in Figure 2, it comprises: a ceramic cavity 1;
Said ceramic cavity 1 has the penetrating multiaspect cylindrical inner chamber in front and back; Each inner surface of said multiaspect cylindrical inner chamber is provided with one to ceramic cavity 1 center convergent and crossing retaining angle 4; The longitudinal section of said multiaspect cylindrical inner chamber is the petal shape cross section; Retaining angle 4 is tip-angled shape (as shown in Figure 1);
Be coated on the ceramic light-reflecting glaze layer 3 on the said multiaspect cylindrical inner chamber inner surface;
Be positioned over a laser crystal bar 5 of the multiaspect cylindrical inner chamber axis of said ceramic cavity 1;
Be space rotation symmetry arrangement and prop up photoflash lamp 2 in the 5 peripheral N of laser crystal bar described in the multiaspect cylindrical inner chamber of said ceramic cavity 1; Said photoflash lamp 2 is between two adjacent retaining angles 4; Said N is 3～30 positive integer;
The symmetrical center line at said retaining angle 4 is vertical with adjacent two photoflash lamps, 2 axis lines;
The drift angle at said retaining angle 4 and said laser crystal bar 5 are at a distance of 1～2mm;
Said retaining angle 4 is 10 °～160 ° a wedge angle;
The number at said retaining angle 4 equates with the number of photoflash lamp 2;
The front and rear surfaces of said multiaspect cylindrical inner chamber is stamped opaque cover respectively, in the said multiaspect cylindrical inner chamber cooling water 6 is housed.
Be provided with fillet surface between the inner surface of said multiaspect cylindrical inner chamber.
The vertical said fillet surface of connecting line between the axis of the axis of said laser crystal bar 5 and photoflash lamp 2.
The longitudinal section of said fillet surface is of a size of 0.5 times～1.5 times of photoflash lamp fluorescent tube internal diameter.
Said laser crystal bar 5 is a cylinder, and cylindrical two circular end surface are coated with on it the corresponding anti-reflection film of laser works wavelength through polishing.
Described ceramic cavity 1 profile is multi-faceted column or cylinder.Said multi-faceted column is triangle cylinder, cuboid or square.
Ceramic light-reflecting glaze layer 3 on the multiaspect cylindrical inner chamber inner surface of the utility model also is the space symmetry with respect to laser crystal bar 5; The light that photoflash lamp 2 sends both can direct irradiation laser crystal bar 5, also can be through ceramic light-reflecting glaze 3 reflection back irradiating laser crystal bars 5, but between the photoflash lamp since the existence at retaining angle 4 can not realize contrasting.
Said photoflash lamp adds up to N and props up (N is 3～30 positive integer), and then the irradiation area of every photoflash lamp irradiation on the laser crystal bar side surface is the long-pending 1/N of side surface of laser crystal bar total pump length.The direct irradiation of every lamp only partly has contribution to own neighbour's laser crystal bar, to other lamp neighbour's almost not contribution of laser crystal bar part.
Compared with prior art, the advantage of the utility model is:
The casual anticoustic chamber of the many lamps that are used for the high power lamp pump laser of the utility model has simple in structure, and pumping efficiency is high, and pumping homogeneity is good, reduces photoflash lamp and shines the advantages such as self-absorption loss that cause mutually; Can be used in various high power pulsed lamp pump lasers, the laser amplifier.
Description of drawings
Fig. 1 is the structural representation of ceramic cavity 1;
Fig. 2 is the structural representation that is used for the casual anticoustic chamber (embodiment 1) of many lamps of high power lamp pump laser;
Fig. 3 is the structural representation of the ceramic cavity 1 among the embodiment 2;
Wherein: ceramic cavity 1 photoflash lamp 2 ceramic light-reflecting glaze 3
Retaining angle 4 laser crystal bars, 5 cooling waters 6
Embodiment
Further describe the utility model below in conjunction with accompanying drawing and specific embodiment:
Embodiment 1: make the many lamps pumping diffuse reflecting pump cavity that is used for high power pulsed laser shown in Figure 2
The number of photoflash lamp 2 is 4 in the present embodiment;
The many lamps pumping diffuse reflecting pump cavity that is used for high power pulsed laser of present embodiment, as shown in Figure 2, it comprises: a ceramic cavity 1; Said ceramic cavity 1 is as shown in Figure 1, and its profile is positive tetragonal body, the longitudinal section square of the multiaspect cylindrical inner chamber in it; Being respectively equipped with on four inner surfaces of square inner chamber to ceramic cavity 1 center convergent and crossing retaining angle 4; The longitudinal section of this square inner chamber is the petal shape cross section, and retaining angle 4 is tip-angled shape;
Scribble ceramic light-reflecting glaze layer 3 on the inner surface of this square inner chamber respectively.The inner surface junction of this square inner chamber is provided with chamfering; The interface of this square inner chamber in the ceramic cavity 1 is to have the petal shape that keeps off angle 4, and the symmetrical center line at retaining angle 4 is vertical with every adjacent two photoflash lamps, 2 axis lines, and retaining angle drift angle and laser crystal bar all can at a distance of 1～2mm; Retaining angle 4 is for preventing between the photoflash lamp 2 light photograph mutually, and the shape at retaining angle can be a pointed shape as shown in Figure 1, and angular range is spent 10 can between spending to 160.The number at retaining angle 4 and the number of lamp 2 equate (present embodiment is 4); Every photoflash lamp 2 is placed between adjacent retaining angle, like Fig. 2; The central axis of laser pump cavity inner chamber (this square inner chamber in the ceramic cavity 1) is placed laser crystal bar 5; Near the profile chamfering connecting line of the axis of laser crystal bar 5 and photoflash lamp 2 axis in the laser pump cavity; To reduce the surface area of interior reflective surface; Thereby reach the surface of reducing photoflash lamp and launch casual anti-number of times; Improve light gathering efficiency, chamfer dimesion can be between 0.5 times～1.5 times of internal diameter of photoflash lamp 2.
With reference to Fig. 3, make the 4 lamp pumping diffuse reflecting pump cavities that are used for high power pulsed laser; Ceramic cavity 1 the multiaspect cylindrical inner chamber form by eight sections identical circular arcs, same the becoming from laser crystal bar 4 near intersection points of every two adjacent circular arcs keeps off angle 4, the existence that keeps off angle 4 can prevent that light shines mutually between the photoflash lamp; Circular arc and photoflash lamp distance the most nearby are advisable greater than 2mm; There is the cooling water of enough flow velocitys to flow through with guarantee; The radius of circular arc and length are with under the prerequisite that can wrap photoflash lamp, and is short more good more, to reduce the surface area of (this square inner chamber in the ceramic cavity 1) reflecting surface in the laser pump cavity; Launch casual anti-number of times thereby reach the surface of reducing photoflash lamp, improve light gathering efficiency.Scribble ceramic light-reflecting glaze 3 on the arc surface of present embodiment; Laser crystal bar 5 and photoflash lamp 2 to be arranged in embodiment 1 identical, repeat no more at this.
The foregoing description has only provided 4 photoflash lamp examples, and industry those of ordinary skill can be made the casual anticoustic chamber of the many lamps that are used for the high power lamp pump laser of 3～30 photoflash lamps fully according to the foregoing description, gives unnecessary details no longer one by one at this.
Claims (7)
1. the many lamps that are used for the high power lamp pump laser overflow the anticoustic chamber, it is characterized in that it comprises:
One ceramic cavity (1);
Said ceramic cavity (1) has the penetrating multiaspect cylindrical inner chamber in front and back; Each inner surface of said multiaspect cylindrical inner chamber is provided with one to ceramic cavity (1) center convergent and crossing retaining angle (4); The longitudinal section of said multiaspect cylindrical inner chamber is the petal shape cross section;
Be coated on the ceramic light-reflecting glaze layer (3) on the said multiaspect cylindrical inner chamber inner surface;
Be positioned over a laser crystal bar (5) of the multiaspect cylindrical inner chamber axis of said ceramic cavity (1);
Be space rotation symmetry arrangement and prop up photoflash lamp (2) in the peripheral N of laser crystal bar (5) described in the multiaspect cylindrical inner chamber of said ceramic cavity (1); Said photoflash lamp (2) is positioned between the two adjacent retaining angles (4); Said N is 3～30 positive integer;
The symmetrical center line at said retaining angle (4) is vertical with adjacent two photoflash lamps (2) axis line;
The drift angle at said retaining angle (4) and said laser crystal bar (5) are at a distance of 1～2mm;
Said retaining angle (4) is 10 °～160 ° a wedge angle;
The number at said retaining angle (4) equates with the number of photoflash lamp (2);
The front and rear surfaces of said multiaspect cylindrical inner chamber is stamped opaque cover respectively, and cooling water (6) is housed in the said multiaspect cylindrical inner chamber.
2. by the described casual anticoustic chamber of many lamps that is used for the high power lamp pump laser of claim 1, it is characterized in that, be provided with fillet surface between the inner surface of said multiaspect cylindrical inner chamber.
3. by the described casual anticoustic chamber of many lamps that is used for the high power lamp pump laser of claim 2, it is characterized in that the vertical said fillet surface of connecting line between the axis of the axis of said laser crystal bar (5) and photoflash lamp (2).
4. by claim 2 or the 3 described casual anticoustic chambeies of many lamps that are used for the high power lamp pump laser, it is characterized in that the longitudinal section of said fillet surface is of a size of 0.5 times～1.5 times of photoflash lamp fluorescent tube internal diameter.
5. by the described casual anticoustic chamber of many lamps that is used for the high power lamp pump laser of claim 1, it is characterized in that said laser crystal bar (5) is a cylinder, cylindrical two circular end surface are coated with on it the corresponding anti-reflection film of laser works wavelength through polishing.
6. by the described casual anticoustic chamber of many lamps that is used for the high power lamp pump laser of claim 1, it is characterized in that described ceramic cavity (1) profile is multi-faceted column or cylinder.
7. by the described casual anticoustic chamber of many lamps that is used for the high power lamp pump laser of claim 1, it is characterized in that said multi-faceted column is triangle cylinder, cuboid or square etc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201676850U CN202159887U (en) | 2011-05-24 | 2011-05-24 | Multi-lamp diffuse reflection condensation chamber used for high-power lamp-pumped laser |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201676850U CN202159887U (en) | 2011-05-24 | 2011-05-24 | Multi-lamp diffuse reflection condensation chamber used for high-power lamp-pumped laser |
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| CN202159887U true CN202159887U (en) | 2012-03-07 |
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| CN2011201676850U Expired - Lifetime CN202159887U (en) | 2011-05-24 | 2011-05-24 | Multi-lamp diffuse reflection condensation chamber used for high-power lamp-pumped laser |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106134017A (en) * | 2014-03-28 | 2016-11-16 | 富士胶片株式会社 | Solid laser device and optoacoustic measuring arrangement |
-
2011
- 2011-05-24 CN CN2011201676850U patent/CN202159887U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106134017A (en) * | 2014-03-28 | 2016-11-16 | 富士胶片株式会社 | Solid laser device and optoacoustic measuring arrangement |
| CN106134017B (en) * | 2014-03-28 | 2018-12-28 | 富士胶片株式会社 | Solid laser device and optoacoustic measuring arrangement |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120307 Effective date of abandoning: 20140507 |
|
| RGAV | Abandon patent right to avoid regrant |