Laser power box and split femtosecond laser

Abstract

The utility model belongs to the technical field of laser, and particularly provides a laser power box which comprises a box body with a double-layer structure. The first layer of the box body is provided with an electric control system and a power supply, and the second layer of the box body is provided with an air cooling radiator, an optical fiber seed source and a pre-amplification system for pre-processing light beams provided by the optical fiber seed source; the mounting area of the power supply and the pre-discharging system is communicated with an air duct of the air-cooled radiator; and the electric control system is respectively connected with the power supply, the optical fiber seed source, the pre-amplification system and the air cooling radiator. The box body of a double-layer structure is used, the power supply and the pre-placing system are placed around the air cooling radiator in a staggered mode, wind energy blown out by the air cooling radiator can cool the internal space of the power box at the same time, and the heat dissipation efficiency of the structure in the power box is improved. The split type femtosecond laser capable of efficiently dissipating heat is provided on the basis, by optimizing the layout of internal optical components, the laser head cannot be interfered by vibration of the air cooling radiator in the working process, and the stability and reliability of laser output performance are guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of lasers, and particularly relates to a laser power supply box with high-efficiency heat dissipation and a split femtosecond laser. Background Technique

[0002] With the development of technology, due to its ultra-short pulse width and extremely high peak power, femtosecond lasers have shown great application potential in fields such as micro-nano processing and biomedical research. However, existing femtosecond lasers generally have problems such as large volume, complex cooling methods, and low efficiency, which restrict their application in a wider range of scenarios. Content of the Utility Model

[0003] The purpose of the utility model is to overcome the problems existing in existing femtosecond lasers, such as large volume, complex cooling methods, and low efficiency.

[0004] To this end, the utility model provides a laser power supply box with high-efficiency heat dissipation, which includes a box body with a double-layer structure; an electric control system and a power supply are arranged on the first layer of the box body, and an air-cooled radiator, an optical fiber seed source, and a pre-amplification system for pre-processing the light beam provided by the optical fiber seed source are arranged on the second layer; the installation areas of the power supply and the pre-amplification system are communicated with the air duct of the air-cooled radiator; the electric control system is respectively connected with the power supply, the optical fiber seed source, the pre-amplification system, and the air-cooled radiator.

[0005] Specifically, the double-layer structure of the above box body is separated by a heat conduction plate; the electric control system and the power supply are installed on the heat conduction plate.

[0006] Specifically, the above pre-amplification system includes a pulse stretcher and a pre-amplifier; the pre-amplifier is arranged at the output end of the pulse stretcher; the electric control system is respectively connected with the pulse stretcher and the optical fiber pre-amplifier.

[0007] Specifically, a plurality of ventilation openings are provided on the above box body.

[0008] Specifically, the above power supply is a switching power supply.

[0009] The utility model also provides a split femtosecond laser, which includes a laser head and the above laser power supply box; the laser power supply box is connected with the laser head through an optical cable assembly.

[0010] Specifically, the above optical cable assembly includes an optical cable and an armored connecting pipe wrapped outside the optical cable.

[0011] Specifically, the above-mentioned laser head includes a shell with a double-layer structure; the first layer of the shell is provided with an amplifier, and the second layer is provided with a pulse compressor and a beam expansion system for laser collimation and beam expansion; the amplifier is arranged at the output end of the optical cable assembly; the compressor is arranged at the output end of the amplifier; and the beam expansion system is arranged at the output end of the compressor.

[0012] Specifically, an acousto-optic switch is further provided in the housing; the acousto-optic switch is arranged at the output end of the optical cable assembly; and the amplifier is arranged at the output end of the acousto-optic switch.

[0013] Specifically, a light outlet is provided on the shell; the light outlet is arranged at the output end of the beam expansion system.

[0014] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0015] The laser power supply box provided by the utility model uses a double-layer structure box body, and the power supply and the pre-amplifier system are staggeredly placed around the air-cooled radiator. The wind blown by the air-cooled radiator can dissipate heat from the internal space of the power supply box at the same time, thereby improving the heat dissipation efficiency of the structure inside the power supply box, simplifying the complexity of the cooling system, and reducing the operation and maintenance costs. It is more suitable for use in an environment where complex water cooling facilities are not required.

[0016] The split femtosecond laser provided by the utility model separates the heat dissipation system that generates vibration from the laser emission system that does not generate vibration by optimizing the layout of the internal optical components. The two parts are connected by optical fiber. The laser head will not be disturbed by the vibration of the air-cooled heat sink during operation. The emitted laser can maintain high concentricity and stability, ensuring the stability and reliability of the femtosecond laser output performance. In addition, the split design significantly reduces the total volume and weight of the laser head, making it easy to move and install. The double-layer design of the power box and the laser head has a compact structure and excellent performance, and is suitable for application scenarios with high requirements for space and environment.

[0017] The present invention will be described in further detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The utility model is a schematic diagram of the internal structure of the laser power supply box.

[0019] Figure 2 It is a schematic diagram of the first-layer structure of the laser power supply box provided by the utility model.

[0020] Figure 3 It is a schematic diagram of the second-layer structure of the laser power supply box provided by the utility model.

[0021] Figure 4It is a schematic diagram of the internal structure of the split femtosecond laser provided by the present utility model.

[0022] Figure 5 It is a schematic plan view of the split femtosecond laser provided by the present utility model.

[0023] Figure 6 It is a schematic diagram of the first layer structure of the laser head of the split femtosecond laser provided by the present utility model.

[0024] Figure 7 It is a schematic diagram of the second layer structure of the laser head of the split femtosecond laser provided by the present utility model.

[0025] Description of reference numerals: 1. Power supply box; 11. Box body; 111. Heat conducting plate; 12. Power supply; 13. Electric control system; 14. Air-cooled radiator; 15. Fiber optic seed source; 16. Pre-amplification system; 161. Pulse stretcher; 162. Pre-amplifier; 2. Optical cable assembly; 3. Laser head; 31. Shell; 32. Acousto-optic switch; 33. Amplifier; 34. Pulse compressor; 35. Beam expansion system. Detailed implementation manners

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0027] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0028] The terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features; in the description of the present utility model, unless otherwise specified, the meaning of "plural" is two or more.

[0029] Refer to Figures 1-3The utility model provides a laser power box 1 with high efficiency in heat dissipation, comprising a box body 11 with a double-layer structure; the first layer of the box body 11 is provided with an electric control system 13 and a power supply 12 for powering the laser, preferably a switching power supply 12; the second layer is provided with an air-cooled radiator 14, an optical fiber seed source 15 and a pre-amplification system 16 for pre-processing the light beam provided by the optical fiber seed source 15; the installation area of the power supply 12 and the pre-amplification system 16 is connected to the air duct of the air-cooled radiator 14; the electric control system 13 is respectively connected to the power supply 12, the optical fiber seed source 15, the pre-amplification system 16 and the air-cooled radiator 14. The box body 11 of the power box 1 adopts a double-layer structure. By optimizing the layout of internal optical components, the power supply 12 and the pre-amplifier system 16 are staggered around the air-cooled radiator 14 so that they can all be located on the air duct of the air-cooled radiator 14 for direct air cooling and heat dissipation. The wind blown out by the air-cooled radiator 14 can also dissipate heat from the internal space of the power box 1. It has a compact structure and excellent performance, and is suitable for application scenarios with high requirements on space and environment.

[0030] Specifically, the double-layer structure of the box body 11 is separated by a heat conducting plate 111; the electric control system 13 and the power supply 12 are installed on the heat conducting plate 111. Preferably, a vent is opened on the heat conducting plate 111, so that the first layer where the electric control system 13 and the power supply 12 are located is connected to the air duct of the air-cooled radiator 14.

[0031] Furthermore, the preamplifier system 16 includes a pulse stretcher 161 and a preamplifier 162; the preamplifier 162 is arranged at the output end of the pulse stretcher 161; the electric control system 13 is respectively connected to the pulse stretcher 161 and the optical fiber preamplifier 162. After the pulse stretcher 161 performs pulse stretching on the light beam provided by the optical fiber seed source 15, the preamplifier 162 performs power preamplification on the stretched light beam, thereby obtaining a high-power laser pulse.

[0032] Optionally, the preamplifier system 16 further includes a pulse selector, which is disposed between the pulse stretcher 161 and the preamplifier 162 and allows only specific pulses to pass through, amplifying the required pulses while preventing the blocked pulses from causing significant losses.

[0033] In order to improve the heat dissipation effect of the power box 1, a plurality of ventilation holes are provided on the box body 11 to facilitate air circulation in the power box 1 and improve heat dissipation.

[0034] Reference Figures 4-6, this embodiment also provides a split femtosecond laser with efficient heat dissipation, including a laser head 3 and the above-mentioned laser power supply box 1; the laser power supply box 1 is connected to the laser head 3 through an optical cable assembly 2. The air-cooled heat dissipation system of the power supply box 1 improves the heat dissipation efficiency, simplifies the complexity of the cooling system, and also reduces the operation and maintenance costs, making the femtosecond laser more suitable for use in environments without complex water-cooling facilities. In addition, the split design separates the heat dissipation system that generates vibration from the vibration-free laser emission system. The two parts are connected by an optical fiber. During the operation of the laser head 3, it will not be disturbed by the vibration of the air-cooled radiator 14, and the emitted laser can maintain a high degree of alignment and stability, ensuring the stability and reliability of the femtosecond laser output performance. And it significantly reduces the overall volume and weight of the laser head 3, facilitating movement and installation.

[0035] Specifically, the optical cable assembly 2 includes an optical cable and an armored connection pipe wrapped around the optical cable. Both ends of the optical cable are connected to the corresponding structures in the power supply box 1 and the laser by optical fiber fusion or other feasible methods. The armored connection pipe is sleeved outside the optical cable and fixed to the box body 11 of the laser power supply box 1 and the housing 31 of the laser head 3 at both ends, protecting the optical cable from being damaged by external objects and fixedly connecting the power supply box 1 and the laser head 3.

[0036] In a refined embodiment, the laser head 3 includes a housing 31 with a double-layer structure; as Figures 6-7 shown, the first layer of the housing 31 is provided with an amplifier 33, the second layer is provided with a pulse compressor 34 and a beam expander system 35 for laser collimation and beam expansion; the amplifier 33 is arranged at the output end of the optical cable assembly 2; the compressor is arranged at the output end of the amplifier 33; the beam expander system 35 is arranged at the output end of the compressor. The pre-amplified pulse is transmitted to the amplifier 33 through the optical cable assembly 2 for re-amplification, then transmitted to the pulse compressor 34 for pulse compression, and finally transmitted to the beam expander system 35 to collimate and expand the laser spot and output it to the working end. Preferably, the housing 31 is provided with a light outlet; the light outlet is arranged at the output end of the beam expander system 35. After the laser spot is collimated and expanded by the beam expander system 35, it is emitted from the light outlet. The laser head 3 adopts a double-layer design, which is small in volume and more compact in structure while ensuring the stable and reliable output performance of the femtosecond pulsed laser, and is suitable for application scenarios with high requirements for space and environment.

[0037] Furthermore, an acousto-optic switch 32 is also arranged in the housing 31; the acousto-optic switch 32 is arranged at the output end of the optical cable assembly 2; the amplifier 33 is arranged at the output end of the acousto-optic switch 32.

[0038] The above examples are only illustrative of the present utility model and do not constitute a limitation on the scope of protection of the present utility model. Any design identical or similar to the present utility model falls within the scope of protection of the present utility model.

Claims

1. A laser power supply box, characterized in that: It includes a box body (11) with a double-layer structure; an electric control system (13) and a power supply (12) are provided on the first layer of the box body (11), and an air-cooled radiator (14), an optical fiber seed source (15), and a pre-amplification system (16) for pre-processing the light beam provided by the optical fiber seed source (15) are provided on the second layer; the installation areas of the power supply (12) and the pre-amplification system (16) are communicated with the air duct of the air-cooled radiator (14); the electric control system (13) is respectively connected to the power supply (12), the optical fiber seed source (15), the pre-amplification system (16), and the air-cooled radiator (14).

2. The laser power supply box according to claim 1, characterized in that: The double-layer structure of the box body (11) is separated by a heat conduction plate (111); the electric control system (13) and the power supply (12) are installed on the heat conduction plate (111).

3. The laser power supply box according to claim 1, characterized in that: The pre-amplification system (16) includes a pulse stretcher (161) and a pre-amplifier (162); the pre-amplifier (162) is arranged at the output end of the pulse stretcher (161); the electric control system (13) is respectively connected to the pulse stretcher (161) and the optical fiber pre-amplifier (162).

4. The laser power supply box according to claim 1, wherein: A plurality of ventilation openings are provided on the box body (11).

5. The laser power supply box according to claim 1, characterized in that: The power supply (12) is a switching power supply (12).

6. A split femtosecond laser, characterized in that: It includes a laser head (3) and the laser power supply box (1) according to any one of claims 1-5; the laser power supply box (1) is connected to the laser head (3) through an optical cable assembly (2).

7. The split femtosecond laser according to claim 6, characterized in that: The optical cable assembly (2) includes an optical cable and an armored connection pipe wrapped outside the optical cable.

8. The split femtosecond laser according to claim 6, wherein: The laser head (3) includes a housing (31) with a double-layer structure; an amplifier (33) is provided on the first layer of the housing (31), and a pulse compressor (34) and a beam expansion system (35) for laser collimation and beam expansion are provided on the second layer; the amplifier (33) is arranged at the output end of the optical cable assembly (2); the compressor is arranged at the output end of the amplifier (33); the beam expansion system (35) is arranged at the output end of the compressor.

9. The split femtosecond laser according to claim 8, characterized in that: An acousto-optic switch (32) is further provided in the housing (31); the acousto-optic switch (32) is arranged at the output end of the optical cable assembly (2); the amplifier (33) is arranged at the output end of the acousto-optic switch (32).

10. The split femtosecond laser according to claim 8, wherein: An optical output port is provided on the housing (31); the optical output port is arranged at the output end of the beam expansion system (35).

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