CN215810464U - Side pump configuration laser illuminator - Google Patents
Side pump configuration laser illuminator Download PDFInfo
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- CN215810464U CN215810464U CN202121956096.0U CN202121956096U CN215810464U CN 215810464 U CN215810464 U CN 215810464U CN 202121956096 U CN202121956096 U CN 202121956096U CN 215810464 U CN215810464 U CN 215810464U
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Abstract
A side pump configuration laser illuminator comprises a signal processing device, a laser shaping device, a laser cabin, a heat dissipation device and a laser receiving device; the laser with the side pump structure is arranged in the laser bin and comprises a half-reflecting mirror, a pumping source, a working substance, a polaroid, a Q-switching crystal and a full-reflecting mirror, wherein the half-reflecting mirror, the working substance, the polaroid, the Q-switching crystal and the full-reflecting mirror are sequentially arranged at intervals along a straight line, the pumping source is a semiconductor array formed by three bars, each bar corresponds to one wavelength, the spectral widths of the three bars are the same, the three bars are arranged around the working substance in a mode that every two bars form 120 degrees, and the length direction of each bar is consistent with the length direction of the working substance. The utility model has the advantages of good uniformity of output laser beams, high laser energy stability, small whole machine volume, light weight, high conversion efficiency, strong environmental adaptability, high light-light conversion efficiency and strong capability.
Description
Technical Field
The utility model belongs to the field of laser guidance, and particularly relates to a side pump configuration laser illuminator.
Background
The laser technology is widely applied to the fields of industry, agriculture, medicine, scientific research, military and the like, and is particularly important in military application. The laser beam has good directivity and strong anti-interference capability, is called as an important part in the precise guidance technology, and is particularly important when the laser illuminator is used as an indispensable important component of a laser semi-active guidance weapon. The traditional laser illuminator has poor uniformity of output laser beams and larger volume of the illuminator, and greatly restricts the development of the illuminator.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a side pump configuration laser illuminator which has the advantages of good light beam uniformity, strong environmental adaptability, miniaturization and light weight.
In order to achieve the purpose, the utility model adopts the technical scheme that: a side pump configuration laser illuminator comprises a signal processing device, a laser shaping device, a laser cabin, a heat dissipation device and a laser receiving device; the laser with the side pump structure is arranged in the laser bin and comprises a half-reflecting mirror, a pumping source, a working substance, a polaroid, a Q-switching crystal and a full-reflecting mirror, wherein the half-reflecting mirror, the working substance, the polaroid, the Q-switching crystal and the full-reflecting mirror are sequentially arranged at intervals along a straight line, the pumping source is a semiconductor array formed by three bars, each bar corresponds to one wavelength, the spectral widths of the three bars are the same, the three bars are arranged around the working substance in a mode that every two bars form 120 degrees, and the length direction of each bar is consistent with the length direction of the working substance.
The wavelength selection range of the three bar bars is 750-850 nm.
The working substance is Nd: YAG rod with a doping concentration of 0.5 at.%.
The Q-switched crystal is Mg0: Ln electro-optic Q-switched crystal, wherein the MgO doping concentration is 2% mol.
And the surface of the semi-reflecting mirror adjacent to the working substance is plated with an antireflection film, and the surface deviating from the working substance is plated with a semi-transparent semi-reflecting film.
The laser shaping device is used for reducing the laser divergence angle and comprises a spherical lens group, wherein the spherical lens group mainly comprises a first spherical lens, a second spherical lens and a third spherical lens which are arranged along the laser propagation direction, and the central axes of the lenses are overlapped.
Both surfaces of the first spherical lens are concave surfaces; one surface of the second spherical lens, which is adjacent to the first spherical lens, is a concave surface, and the other opposite surface is a convex surface; one surface of the third spherical lens, which is adjacent to the second spherical lens, is a plane, and the other opposite surface is a convex surface.
The laser receiving device comprises a fourth spherical lens, a fifth spherical lens, a sixth spherical lens, a plane lens and a detector which are sequentially arranged along the laser propagation direction, and the central axis of each lens coincides with the central axis of the detector.
One surface of the fourth spherical lens, which is far away from the fifth spherical lens, is a convex surface, and the other opposite surface is a plane; one surface of the fifth spherical lens, which is adjacent to the fourth spherical lens, is a convex surface, and the other opposite surface is a concave surface; and the two surfaces of the sixth spherical lens are concave surfaces.
The utility model has the beneficial effects that: the utility model has the advantages of good uniformity of output laser beams, high laser energy stability, small whole machine volume, light weight, high conversion efficiency, strong environmental adaptability, high light-light conversion efficiency and strong capability.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of a laser configuration according to the present invention;
FIG. 3 is a schematic diagram of a semiconductor array of lasers according to the present invention;
FIG. 4 is a schematic view of a laser shaping apparatus according to the present invention;
FIG. 5 is a schematic view of a laser receiver according to the present invention;
the labels in the figure are: 1. a signal processing device; 2. a laser shaping device 201, a first spherical lens 202, a second spherical lens 203 and a third spherical lens; 3. a laser bin 301, a semi-reflecting mirror 302, a pumping source 303, a working substance 304, a polaroid 305, a Q-switched crystal 306 and a total reflecting mirror; 4. a heat sink; 5. the device comprises a laser receiving device, 501, a fourth spherical lens, 502, a fifth spherical lens, 503, a sixth spherical lens, 504, a planar lens, 505 and a detector.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and examples, but the utility model is not limited thereto.
Referring to fig. 1 to 3, the laser illuminator with the side pump configuration comprises a signal processing device 1, a laser shaping device 2, a laser cabin 3, a heat dissipation device 4 and a laser receiving device 5. The laser with the side pump configuration is arranged in the laser bin 3 and comprises a half-reflecting mirror 301, a pump source 302, a working substance 303, a polaroid 304, a Q-switching crystal 305 and a full-reflecting mirror 306, wherein the half-reflecting mirror 301, the working substance 303, the polaroid 304, the Q-switching crystal 305 and the full-reflecting mirror 306 are sequentially arranged at intervals along a straight line. The overall specification and size of the camera are as follows: 235mm × 95mm × 113mm, output laser energy is more than or equal to 60mJ, and divergence angle is less than or equal to 0.4 mrad.
Wherein, the left side surface of the half-reflecting mirror 301 is plated with a 1064nm half-reflecting film, and the right side surface is plated with a 1064nm antireflection film. The pump source 302 is a 2500W 808nm semiconductor array composed of three bars, each bar corresponds to a wavelength, the spectral widths of the three bars are the same, the three bars are arranged around the working substance 303 in a mode of forming an angle of 120 degrees with each other in pairs, and the length direction of the bars is consistent with the length direction of the working substance 303. Working substance 303 is Nd: YAG rod with doping concentration of 0.5at.% and specification size of phi 5 × 30. The Q-switched crystal 305 is Mg0 electro-optic Q-switched crystal having an MgO doping concentration of 2% mol and a specification size of 7X 15 mm. The surface of the total reflection mirror 306 is plated with an antireflection film of 808 nm.
The wavelength selection range of the three bar bars is 750-850 nm.
The laser energy output by the laser is more than or equal to 60mJ, and the divergence angle is less than or equal to 2.5 mrad.
The laser shaping device 2 is used for reducing the divergence angle of laser and improving the uniformity of light beams. As shown in fig. 4, the laser shaping device includes a spherical lens group, which is mainly composed of a first spherical lens 201, a second spherical lens 202, and a third spherical lens 203 arranged along the laser propagation direction, and the central axes of the respective lenses coincide.
Both surfaces of the first spherical lens 201 are concave; the first spherical lens 201 has an outer diameter D =8mm and a radius of curvature R11=8mm, radius of curvature R12=20mm, center thickness d =2.3mm ± 0.1mm, material H-ZF6, wherein R11Is the radius of curvature, R, of the left side surface of the first spherical lens 20112Is the radius of curvature of the right side of the first spherical lens 201.
One surface of the second spherical lens 202 adjacent to the first spherical lens 201 is a concave surface, and the other opposite surface is a convex surface; outer diameter D =8mm and curvature radius R of the second spherical lens 20221= 53mm, radius of curvature R22= 27mm, central thickness d =5mm ± 0.1mm, material H-K9L; wherein R is21Is the radius of curvature, R, of the left side of the second spherical lens 20222Is the radius of curvature of the right side of the second spherical lens 202.
One surface of the third spherical lens 203 adjacent to the second spherical lens 202 is a plane, and the other surface opposite to the plane is a convex surface. The third spherical lens 203 has an outer diameter D =12mm and a radius of curvature R31= ∞ radius of curvature R32= 68m, center thickness d =4.2mm ± 0.1mm, material H-ZF 6. Wherein R is31Is the radius of curvature, R, of the left side of the third spherical lens 20332Is the radius of curvature of the right side of the third spherical lens 203.
After the laser is processed by the laser shaping device 2, the output laser energy is more than or equal to 60mJ, and the divergence angle is less than or equal to 0.4 mrad.
As shown in fig. 5, the laser receiving device 5 includes a fourth spherical lens 501, a fifth spherical lens 502, a sixth spherical lens 503, a planar lens 504, and a probe 504, which are sequentially arranged along the laser propagation direction, and the central axes of the respective lenses coincide with the central axis of the probe 505.
One surface of the fourth spherical lens 501, which is away from the fifth spherical lens 502, is a convex surface, and the other opposite surface is a plane; the fourth spherical lens 501 has an outer diameter D =22mm and a radius of curvature R41= ∞ radius of curvature R42= 38m, central thickness d =2mm ± 0.1mm, material H-K9L; wherein R is41Is the radius of curvature, R, of the left side of the fourth spherical lens 50142The radius of curvature of the right side surface of the fourth spherical lens 501.
One surface of the fifth spherical lens 502 adjacent to the fourth spherical lens 501 is a convex surface, and the other opposite surface is a concave surface; the fifth spherical lens 502 has an outer diameter D =20mm and a radius of curvature R51= 35, radius of curvature R52= 17mm, center thickness d =3.6mm ± 0.1mm, material H-ZF 6; wherein R is51Is the radius of curvature, R, of the left side of the fifth spherical lens 50252Is the radius of curvature of the right side surface of fifth spherical lens 502.
Both surfaces of the sixth spherical lens 503 are concave. The sixth spherical lens 503 has an outer diameter D =10mm and a radius of curvature R61=8mm, radius of curvature R62=10mm, center thickness d =2mm ± 0.1mm, material H-K9L; wherein R is61Is the radius of curvature, R, of the left side surface of the sixth spherical lens 50362The radius of curvature of the right side surface of the sixth spherical lens 503.
The laser shaping device 2 and the laser receiving device 5 are all universal and can be adapted to various lasers.
The above embodiments are only intended to illustrate the technical solution of the present invention and not to limit the same, and it should be understood by those of ordinary skill in the art that the specific embodiments of the present invention can be modified or substituted with equivalents with reference to the above embodiments, and any modifications or equivalents without departing from the spirit and scope of the present invention are within the scope of the claims to be appended.
Claims (7)
1. A side pump configuration laser illuminator comprises a signal processing device, a laser shaping device, a laser cabin, a heat dissipation device and a laser receiving device; the method is characterized in that: the laser with the side pump structure is arranged in the laser bin and comprises a half-reflecting mirror, a pumping source, a working substance, a polaroid, a Q-switching crystal and a full-reflecting mirror, wherein the half-reflecting mirror, the working substance, the polaroid, the Q-switching crystal and the full-reflecting mirror are sequentially arranged at intervals along a straight line, the pumping source is a semiconductor array formed by three bars, each bar corresponds to one wavelength, the spectral widths of the three bars are the same, the three bars are arranged around the working substance in a mode that every two bars form 120 degrees, and the length direction of each bar is consistent with the length direction of the working substance.
2. A side pump configuration laser illuminator as recited in claim 1, wherein: the wavelength selection range of the three bar bars is 750-850 nm.
3. A side pump configuration laser illuminator as recited in claim 1, wherein: and the surface of the semi-reflecting mirror adjacent to the working substance is plated with an antireflection film, and the surface deviating from the working substance is plated with a semi-transparent semi-reflecting film.
4. A side pump configuration laser illuminator as recited in claim 1, wherein: the laser shaping device is used for reducing the laser divergence angle and comprises a spherical lens group, wherein the spherical lens group mainly comprises a first spherical lens, a second spherical lens and a third spherical lens which are arranged along the laser propagation direction, and the central axes of the lenses are overlapped.
5. A side pump configuration laser illuminator as recited in claim 4, wherein: both surfaces of the first spherical lens are concave surfaces; one surface of the second spherical lens, which is adjacent to the first spherical lens, is a concave surface, and the other opposite surface is a convex surface; one surface of the third spherical lens, which is adjacent to the second spherical lens, is a plane, and the other opposite surface is a convex surface.
6. A side pump configuration laser illuminator as recited in claim 1, wherein: the laser receiving device comprises a fourth spherical lens, a fifth spherical lens, a sixth spherical lens, a plane lens and a detector which are sequentially arranged along the laser propagation direction, and the central axis of each lens coincides with the central axis of the detector.
7. A side pump configuration laser illuminator as recited in claim 6, wherein: one surface of the fourth spherical lens, which is far away from the fifth spherical lens, is a convex surface, and the other opposite surface is a plane; one surface of the fifth spherical lens, which is adjacent to the fourth spherical lens, is a convex surface, and the other opposite surface is a concave surface; and the two surfaces of the sixth spherical lens are concave surfaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121956096.0U CN215810464U (en) | 2021-08-19 | 2021-08-19 | Side pump configuration laser illuminator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121956096.0U CN215810464U (en) | 2021-08-19 | 2021-08-19 | Side pump configuration laser illuminator |
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| Publication Number | Publication Date |
|---|---|
| CN215810464U true CN215810464U (en) | 2022-02-11 |
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| CN202121956096.0U Active CN215810464U (en) | 2021-08-19 | 2021-08-19 | Side pump configuration laser illuminator |
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2021
- 2021-08-19 CN CN202121956096.0U patent/CN215810464U/en active Active
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