CN112134134A - Laser with automatic power optimization function - Google Patents
Laser with automatic power optimization function Download PDFInfo
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- CN112134134A CN112134134A CN202011217189.1A CN202011217189A CN112134134A CN 112134134 A CN112134134 A CN 112134134A CN 202011217189 A CN202011217189 A CN 202011217189A CN 112134134 A CN112134134 A CN 112134134A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/13—Stabilisation of laser output parameters, e.g. frequency or amplitude
- H01S3/1305—Feedback control systems
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/11—Mode locking; Q-switching; Other giant-pulse techniques, e.g. cavity dumping
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- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
Abstract
The invention discloses a laser with an automatic power optimization function, which comprises a closed resonant cavity and a control system, wherein a pumping source, a pumping mirror, a laser crystal, a Q switch, at least one nonlinear crystal and a cavity mirror for simultaneously reflecting double-frequency light and fundamental frequency light at high frequency are arranged in the resonant cavity, the pumping mirror is used as one end mirror of the resonant cavity, the cavity mirror is used as the other end mirror of the resonant cavity, laser emitted by the pumping source sequentially passes through the pumping mirror, the laser crystal, the Q switch, the nonlinear crystal and the cavity mirror to be output, the laser crystal is used for absorbing the laser output by the pumping mirror to form laser oscillation between the two end mirrors, the laser further comprises a crystal automatic point changing device, the nonlinear crystal is arranged on the crystal automatic point changing device, and the nonlinear crystal is used for converting the fundamental frequency light into double-frequency light, And the triple frequency or higher harmonic output, and the automatic crystal point changing device is electrically connected with the control system.
Description
Technical Field
The invention relates to the technical field of lasers, in particular to a laser with an automatic power optimization function.
Background
With the progress of science and technology and the rapid development of laser technology, lasers have been widely used in the fields of communication, medical treatment, machining, weaponry, illumination, and the like.
The existing laser has several problems:
(1) the optical element can not bear overhigh power, and the coating film on the surface of the frequency doubling crystal is easy to damage.
(2) The output spot size is too small and easily damages the customer optical elements. The beam expander surface is also easily damaged by the addition of the beam expander.
(3) The existing laser resonant cavity is lack of an original element which can be used for adjusting a light path, and the deviation of an optical element generated in any transportation process, the power reduction and the light spot roundness reduction caused by the deviation cannot be recovered under the condition of not opening the cavity.
That is, as the service time of the laser goes on, the laser gradually degrades or even is damaged in the light emitting process, so that the output ultraviolet power is reduced or the laser cannot work normally.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a laser with an automatic power optimization function.
In order to achieve the purpose, the invention adopts the following technical scheme: a laser with an automatic power optimization function comprises a closed resonant cavity and a control system, wherein a pumping source, a pumping mirror, a laser crystal, a Q switch, at least one nonlinear crystal and a cavity mirror for simultaneously reflecting double-frequency light and fundamental-frequency light are arranged in the resonant cavity, the pumping mirror is used as one end mirror of the resonant cavity, the cavity mirror is used as the other end mirror of the resonant cavity, laser emitted by the pumping source sequentially passes through the pumping mirror, the laser crystal, the Q switch, the nonlinear crystal and the cavity mirror to be output, the laser crystal is used for absorbing the laser output by the pumping mirror to form laser oscillation between the two end mirrors, the laser further comprises a crystal automatic point changing device, the nonlinear crystal is arranged on the crystal automatic point changing device and used for converting the fundamental-frequency light into double-frequency light, The laser comprises a laser, a crystal automatic point changing device, a control system, a power detection feedback device, a cavity mirror adjusting device and a cavity mirror adjusting device, wherein the crystal automatic point changing device is electrically connected with the control system, the power detection feedback device is electrically connected with the control system, the cavity mirror adjusting device is arranged in the resonant cavity and arranged on the cavity mirror adjusting device, the cavity mirror adjusting device is used for adjusting a resonant light path in the resonant cavity, and the cavity mirror adjusting device is electrically connected with the control system.
The further technical scheme is as follows: the automatic crystal point changing device comprises a motor and a moving platform, the nonlinear crystal is fixedly arranged on the moving platform, the moving platform is connected with an output shaft of the motor, the motor is electrically connected with the control system, and the motor is used for driving the moving platform to move so as to adjust the position of laser on the nonlinear crystal.
The further technical scheme is as follows: the nonlinear crystal outputs at or near the brewster angle to fundamental frequency light.
The further technical scheme is as follows: the cavity mirror adjusting device comprises an adjusting mechanism and a driving assembly, the adjusting mechanism is connected with the driving assembly, the cavity mirror is fixedly arranged on the adjusting mechanism, the driving mechanism is electrically connected with a control system, and the adjusting mechanism is used for adjusting the angle of the cavity mirror so as to optimize the laser power output.
The further technical scheme is as follows: the power detection feedback device comprises a light splitting device and a light power measuring probe which are arranged on a laser output light path, the light power measuring probe is electrically connected with the control system, the light power measuring probe is used for receiving laser output by the light splitting device, and the control system is used for automatically optimizing the output power of the laser according to the power of the output laser.
The further technical scheme is as follows: the light splitting device is an ultraviolet optical polishing sheet without an optical film, and is placed in a range close to the Brewster angle with the output laser.
The further technical scheme is as follows: the laser control system comprises a resonant cavity, a laser output light path and a switchable point beam expander device, wherein the switchable point beam expander device is arranged in the resonant cavity and is arranged on the laser output light path of the resonant cavity and electrically connected with the control system.
The further technical scheme is as follows: the laser also comprises a replaceable beam expander which is convenient for a user to replace, and the replaceable beam expander is arranged on a laser output window or a light path of the resonant cavity and is detachably connected with the resonant cavity.
The further technical scheme is as follows: an external switch is arranged behind the replaceable point beam expander device or the replaceable beam expander.
The further technical scheme is as follows: the air interchanger is arranged in the resonant cavity and comprises an air pump, a filter and a dryer, a drying agent is arranged in the dryer, an air inlet of the filter is connected with an air outlet of the air pump, and an air outlet of the filter is connected with an air inlet of the dryer.
Compared with the prior art, the invention has the beneficial effects that: the laser with the automatic power optimization function realizes automatic crystal point changing by the power detection feedback device to prevent the laser power from decreasing. The power detection feedback device outputs a feedback signal to the control system, the control system processes the feedback signal output by the power detection feedback device and outputs a control signal to the automatic crystal point changing device, automatic point changing is achieved, the point changing process is automatic and rapid, manual extra debugging is not needed, maintenance cost is reduced, the service life of the crystal is prolonged, long-term reliability of products is greatly improved, and the power detection feedback device is particularly used on an industrial production assembly line. The resonant light path in the resonant cavity is adjusted through the cavity mirror adjusting device, so that the maximum output power of the whole laser with the automatic power optimization function is realized, and the power reduction caused by mechanical deformation due to transportation, vibration and the like is overcome. The effect that maintenance can be conveniently carried out on the production field without influencing the use of customers can be achieved through the replaceable point beam expander device or the replaceable beam expander.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented in accordance with the content of the description, and in order to make the above description and other objects, features, and advantages of the present invention more clearly understandable, preferred embodiments are described in detail below.
Drawings
FIG. 1 is a schematic diagram of a laser with automatic power optimization;
FIG. 2 is a schematic view of the structure of the automatic crystal changing device;
FIG. 3 is a schematic view of the structure of the cavity mirror adjusting device;
fig. 4 is a schematic diagram of a switchable point beam expander device.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and the detailed description.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be connected or detachably connected or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above should not be understood to necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by one skilled in the art.
As shown in fig. 1 to 4, a laser with an automatic power optimization function includes a closed resonant cavity 4 and a control system 5, a pumping source 41, a pumping mirror 42, a laser crystal 43, a Q-switch 44, at least one nonlinear crystal and a cavity mirror 47 for reflecting light of double frequency and light of fundamental frequency at the same time are disposed in the resonant cavity 4, the pumping mirror 42 is used as one end mirror of the resonant cavity 4, the cavity mirror 47 is used as the other end mirror of the resonant cavity 4, laser emitted from the pumping source 41 is sequentially output through the pumping mirror 42, the laser crystal 43, the Q-switch 44, the nonlinear crystal and the cavity mirror 47, the laser crystal 43 is used for absorbing laser output from the pumping mirror 42 to form laser oscillation between the two end mirrors, the laser further includes a crystal automatic frequency-changing device 1, the nonlinear crystal is disposed on the crystal automatic frequency-changing device 1, the nonlinear crystal is used for converting light of fundamental frequency into frequency, triple frequency or higher order frequency output, the automatic crystal point changing device 1 is electrically connected with the control system 5, the laser further comprises a power detection feedback device 7, the power detection feedback device 7 is electrically connected with the control system 5, a cavity mirror adjusting device 2 is arranged in the resonant cavity 4, a cavity mirror 47 is arranged on the cavity mirror adjusting device 2, the cavity mirror adjusting device 2 is used for adjusting a resonant light path in the resonant cavity 4, and the cavity mirror adjusting device 2 is electrically connected with the control system 5. Specifically, light emitted by the pump source 41 is absorbed by the laser crystal 43 through the pump mirror 42 to form laser oscillation, and fundamental frequency light generated by the laser oscillation is converted into double-frequency, triple-frequency or higher harmonic ultraviolet laser light by the nonlinear crystal after passing through the Q switch 44 to be output. The power detection feedback device 7 detects the power of the output laser beam, the power detection feedback device 7 outputs a feedback signal to the control system 5, the control system 5 processes the feedback signal output by the power detection feedback device 7 and outputs a control signal to the automatic crystal point changing device 1, automatic point changing is achieved, the point changing process is rapid, manual extra debugging is not needed, the maintenance cost is reduced, the service life of the crystal is prolonged, and the long-term reliability of the product is greatly improved. Meanwhile, the resonant light path in the resonant cavity 4 is adjusted through the cavity mirror adjusting device 2, so that the whole laser with the automatic power optimization function can realize the maximum output power, and the power reduction caused by mechanical deformation due to transportation, vibration and the like is overcome.
Specifically, as shown in fig. 2, the crystal automatic point changing device 1 includes a motor 11 and a moving platform 12, a nonlinear crystal is fixedly disposed on the moving platform 12, the moving platform 12 is connected to an output shaft of the motor 11, the motor 11 is electrically connected to the control system 5, the motor 11 is configured to drive the moving platform 12 to move so as to adjust a position of laser on the nonlinear crystal, thereby realizing point changing of the nonlinear crystal, the control system 5 outputs a control signal to the crystal automatic point changing device 1, and the motor 11 provides power to drive the moving platform 12 to move, thereby driving the nonlinear crystal to move so as to adjust a position of the laser on the nonlinear crystal, thereby realizing automatic point changing, preventing laser power from decreasing, prolonging a crystal life, and greatly improving long-term reliability of a product.
In another embodiment, the movable platform 12 may be a two-dimensional platform, which is used to adjust and change the point of the nonlinear crystal.
In particular, the nonlinear crystal outputs at or near brewster angle to fundamental frequency light to prevent laser damage and to enable control of laser intensity.
Specifically, as shown in fig. 1 to 2, the nonlinear crystal includes a frequency doubling crystal 46 and a frequency tripling crystal 45, the frequency tripling crystal 45 is disposed on the automatic crystal switching device 1, laser emitted from the pump source 41 is absorbed by the laser crystal 43 after passing through the pump mirror 42, laser oscillation is formed between the two end mirrors, and ultraviolet laser output is formed through the frequency tripling crystal 45 and the frequency doubling crystal 46.
Specifically, as shown in fig. 3, the cavity mirror 47 is an independent body, and if a slight change occurs in position, the resonant optical path of the laser deviates from an optimal state, which results in energy reduction of the laser output and deterioration of the beam quality. The cavity mirror adjusting device 2 comprises an adjusting mechanism 21 and a driving assembly 22, the adjusting mechanism 21 is connected with the driving assembly 22, a cavity mirror 47 is fixedly arranged on the adjusting mechanism 21, the driving assembly 22 is electrically connected with the control system 5, the driving assembly 22 comprises two driving motors which are a first driving motor 221 and a second driving motor 222 respectively, and the first driving motor 221 and the second driving motor 222 are used for adjusting the horizontal axis and the pitching axis of the cavity mirror 47 so as to optimize the laser power. When the power of the laser is reduced due to mechanical deformation caused by transportation, vibration and the like, the control system 5 transmits a detection signal sent by the power detection feedback device 7 to the driving assembly 22, and the driving assembly 22 drives the adjusting device to adjust the angle of the cavity mirror 47, so that the whole laser with the automatic optimization function realizes the maximum output power.
Specifically, as shown in fig. 1, the power detection feedback device 7 includes a light splitting device 71 and an optical power measuring probe 72, which are disposed on the laser output optical path, the optical power measuring probe 72 is electrically connected to the control system 5, the optical power measuring probe 72 is configured to receive the laser output by the light splitting device 71, and the control system 5 is configured to automatically optimize the output power of the laser according to the power of the output laser. The beam splitter 71 splits the laser beam output from the nonlinear crystal into two beams, one of which is output as a sub-energy (a small portion of laser light) that is power-detected by the optical power measuring probe 72 and transmits a detection signal to the control system 5.
Specifically, the beam splitting device 71 is an ultraviolet optical polishing sheet without an optical coating, thereby greatly prolonging the life of the crystal. The beam splitting device 71 is placed in a range close to the brewster angle with respect to the output laser light to prevent laser damage and to control the laser light intensity. The optical power measurement probe 72 may be a photodiode or the like.
Specifically, the ultraviolet optical polishing sheet is made of an ultraviolet optical material such as fused silica, CaF2 or MgF 2.
In another embodiment, the light splitting device 71 may be an uncoated flat mirror.
Specifically, as shown in fig. 1, a switchable point beam expander device 3 is disposed in the resonant cavity 4, and the switchable point beam expander device 3 is disposed on a laser output light path of the resonant cavity 4 and electrically connected to the control system 5. The point changing device 3 of the point-changeable beam expander can realize the automatic point changing of the beam expander, reduce the power loss and influence on the quality of light beams, and achieve the effect that the maintenance can be convenient and the use of customers can not be influenced in a production field.
Specifically, as shown in fig. 4, the switchable point beam expander device 3 includes a motor 11, a rotating platform 32 and a beam expander 33, the beam expander 33 is fixed on the rotating platform 32, the rotating platform 32 is connected to an output shaft of the motor 11, the motor 11 is electrically connected to the control system 5, and the motor 11 is used for driving the rotating platform 32 to rotate so as to adjust the position of the laser on the first lens of the beam expander 33. The laser is convenient to operate, manual debugging is omitted, efficiency is improved, and the energy of laser output by the laser is more stable.
In another embodiment, the laser further includes a replaceable beam expander convenient for the user to replace, the replaceable beam expander is disposed on the laser output window or the light path of the resonant cavity 4 and detachably connected to the resonant cavity 4, when the replaceable beam expander on the resonant cavity 4 is damaged, the replaceable beam expander can be manually replaced from the outside of the resonant cavity 4, the operation is convenient, the power loss is reduced, the influence on the quality of the light beam is reduced, and the effect of convenient maintenance is achieved. The effect that maintenance can be conveniently carried out on the production field without influencing the use of customers is achieved through the replaceable beam expander.
Specifically, as shown in fig. 1, an external shutter 8 is provided behind the exchangeable point expander device 3 or the exchangeable point expander. And the external switch 8 is automatically closed before the laser automatically optimizes the laser output power so as to prevent the output laser from damaging a workpiece or potential safety hazard.
Specifically, as shown in fig. 1, a ventilation device 6 is disposed in the resonant cavity 4, the ventilation device 6 includes an air pump 61, a filter 62 and a dryer 63, a drying agent is disposed in the dryer 63, an air inlet of the filter 62 is connected to an air outlet of the air pump 61, and an air outlet of the filter 62 is connected to an air inlet of the dryer 63. The ventilation device 6 is used for absorbing water vapor in the resonant cavity 4, reducing loss in the resonant cavity 4, stabilizing output energy of the laser and prolonging the service life of an optical device of the high-power laser.
Compared with the prior art, the laser with the automatic power optimization function realizes automatic point changing of the crystal through the power detection feedback device to prevent the laser power from decreasing. The power detection feedback device outputs a feedback signal to the control system, the control system processes the feedback signal output by the power detection feedback device and outputs a control signal to the automatic crystal point changing device, automatic point changing is achieved, the point changing process is automatic and rapid, manual extra debugging is not needed, maintenance cost is reduced, the service life of the crystal is prolonged, long-term reliability of products is greatly improved, and the power detection feedback device is particularly used on an industrial production assembly line. The resonant light path in the resonant cavity is adjusted through the cavity mirror adjusting device, so that the maximum output power of the whole laser with the automatic power optimization function is realized, and the power reduction caused by mechanical deformation due to transportation, vibration and the like is overcome. The effect that maintenance can be conveniently carried out on the production field without influencing the use of customers can be achieved through the replaceable point beam expander device or the replaceable beam expander.
The technical contents of the present invention are further illustrated by the examples only for the convenience of the reader, but the embodiments of the present invention are not limited thereto, and any technical extension or re-creation based on the present invention is protected by the present invention. The protection scope of the invention is subject to the claims.
Claims (10)
1. A laser with an automatic power optimization function is characterized by comprising a closed resonant cavity and a control system, wherein a pumping source, a pumping mirror, a laser crystal, a Q switch, at least one nonlinear crystal and a cavity mirror for simultaneously reflecting double-frequency light and fundamental-frequency light are arranged in the resonant cavity, the pumping mirror is used as one end mirror of the resonant cavity, the cavity mirror is used as the other end mirror of the resonant cavity, laser emitted by the pumping source sequentially passes through the pumping mirror, the laser crystal, the Q switch, the nonlinear crystal and the cavity mirror to be output, the laser crystal is used for absorbing the laser output by the pumping mirror to form laser oscillation between the two end mirrors, the laser further comprises a crystal automatic point changing device, the nonlinear crystal is arranged on the crystal automatic point changing device, and the nonlinear crystal is used for converting the fundamental-frequency light into double-frequency light, The laser comprises a laser, a crystal automatic point changing device, a control system, a power detection feedback device, a cavity mirror adjusting device and a cavity mirror adjusting device, wherein the crystal automatic point changing device is electrically connected with the control system, the power detection feedback device is electrically connected with the control system, the cavity mirror adjusting device is arranged in the resonant cavity and arranged on the cavity mirror adjusting device, the cavity mirror adjusting device is used for adjusting a resonant light path in the resonant cavity, and the cavity mirror adjusting device is electrically connected with the control system.
2. The laser with the automatic power optimization function according to claim 1, wherein the crystal auto-switching device includes a motor and a moving platform, the nonlinear crystal is fixed on the moving platform, the moving platform is connected to an output shaft of the motor, the motor is electrically connected to the control system, and the motor is configured to drive the moving platform to move to adjust the position of the laser on the nonlinear crystal.
3. The laser with automatic power optimization function of claim 1, wherein the nonlinear crystal is at or near brewster angle output for fundamental frequency light.
4. The laser with automatic power optimization function of claim 1, wherein the cavity mirror adjusting device comprises an adjusting mechanism and a driving assembly, the adjusting mechanism is connected with the driving assembly, the cavity mirror is fixedly arranged on the adjusting mechanism, the driving mechanism is electrically connected with a control system, and the adjusting mechanism is used for adjusting the angle of the cavity mirror to optimize the laser power output.
5. The laser with the automatic power optimization function according to claim 1, wherein the power detection feedback device includes a light splitting device and an optical power measuring probe, the light splitting device and the optical power measuring probe are disposed on a laser output light path, the optical power measuring probe is electrically connected to the control system, the optical power measuring probe is configured to receive the laser output by the light splitting device, and the control system is configured to automatically optimize the output power of the laser according to the power of the output laser.
6. The laser with automatic power optimization function of claim 5, wherein the light splitting device is an ultraviolet optical polishing sheet without an optical coating, and the light splitting device is placed in a range close to the Brewster angle with the output laser light.
7. The laser with automatic power optimization function of claim 1, wherein a switchable point beam expander device is disposed in the resonant cavity, and the switchable point beam expander device is disposed on a laser output optical path of the resonant cavity and electrically connected to the control system.
8. The laser with automatic power optimization function of claim 1, further comprising a replaceable beam expander convenient for user replacement, wherein the replaceable beam expander is disposed on a laser output window or an optical path of the resonant cavity and detachably connected to the resonant cavity.
9. The laser with automatic power optimization function of claim 7 or 8, wherein an external switch is arranged behind the switchable point beam expander device or the switchable point beam expander.
10. The laser with the automatic power optimization function according to any one of claims 1 to 8, wherein an air exchanging device is arranged in the resonant cavity, the air exchanging device comprises an air pump, a filter and a dryer, a drying agent is arranged in the dryer, an air inlet of the filter is connected with an air outlet of the air pump, and an air outlet of the filter is connected with an air inlet of the dryer.
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| CN202011217189.1A CN112134134A (en) | 2020-11-04 | 2020-11-04 | Laser with automatic power optimization function |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113594845A (en) * | 2021-09-29 | 2021-11-02 | 武汉华日精密激光股份有限公司 | Point changing device and method for nonlinear crystal in laser |
| CN114094430A (en) * | 2021-10-30 | 2022-02-25 | 深圳中科飞测科技股份有限公司 | Laser regulation and control method based on frequency conversion crystal point changing and storage medium |
| CN116826496A (en) * | 2023-08-31 | 2023-09-29 | 光科芯图(北京)科技有限公司 | Infrared seed light source and laser system |
-
2020
- 2020-11-04 CN CN202011217189.1A patent/CN112134134A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113594845A (en) * | 2021-09-29 | 2021-11-02 | 武汉华日精密激光股份有限公司 | Point changing device and method for nonlinear crystal in laser |
| CN114094430A (en) * | 2021-10-30 | 2022-02-25 | 深圳中科飞测科技股份有限公司 | Laser regulation and control method based on frequency conversion crystal point changing and storage medium |
| CN116826496A (en) * | 2023-08-31 | 2023-09-29 | 光科芯图(北京)科技有限公司 | Infrared seed light source and laser system |
| CN116826496B (en) * | 2023-08-31 | 2024-01-26 | 光科芯图(北京)科技有限公司 | Infrared seed light source and laser system |
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