CN113872035A - Laser with external monitoring function - Google Patents
Laser with external monitoring function Download PDFInfo
- Publication number
- CN113872035A CN113872035A CN202110986140.0A CN202110986140A CN113872035A CN 113872035 A CN113872035 A CN 113872035A CN 202110986140 A CN202110986140 A CN 202110986140A CN 113872035 A CN113872035 A CN 113872035A
- Authority
- CN
- China
- Prior art keywords
- laser
- shell
- photoelectric detector
- driving circuit
- laser output
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000012544 monitoring process Methods 0.000 title claims abstract description 13
- 239000013307 optical fiber Substances 0.000 claims abstract description 17
- 239000000758 substrate Substances 0.000 claims abstract description 13
- 238000001816 cooling Methods 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 230000001960 triggered effect Effects 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 abstract description 2
- 238000009434 installation Methods 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
Images
Classifications
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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
- H01S3/0014—Monitoring arrangements not otherwise provided for
-
- 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
-
- 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
- H01S5/00—Semiconductor lasers
- H01S5/06—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Lasers (AREA)
Abstract
The invention provides a laser with an external monitoring function, which comprises a laser output body, a photoelectric detector and a connecting lead, wherein the laser output body comprises a shell, a substrate and an output optical fiber, a driving circuit and a laser output assembly are arranged on the substrate, the driving circuit and the laser output assembly are all positioned in the shell, the driving circuit is connected with the laser output assembly, the output optical fiber penetrates out of the shell, the photoelectric detector is positioned outside the shell, and the connecting lead penetrates through the shell and is connected between the photoelectric detector and the driving circuit. Through the photoelectric detector arranged outside the shell, the environment outside the shell, a device to be tested or a water-cooling plate and other devices can be externally monitored, when the detection power exceeds a set range, the laser is triggered to be turned off, and the laser and the whole test link can be protected.
Description
Technical Field
The invention relates to the field of high-power lasers, in particular to a laser with an external monitoring function.
Background
The existing high-power laser is shown in fig. 1 and fig. 2, and comprises a shell 11, wherein a display screen 12, a power adjusting knob 13 and an emergency button 16 are arranged on the outer wall of the shell 11, the power adjusting knob 13 is used for adjusting output power, when abnormal conditions occur, an operator is required to rapidly shut down the laser through the emergency button, the optical fiber burning speed is accelerated along with the rise of the power, so that the operator is required to react rapidly, and even a person needs to be additionally configured to take care of the laser.
Therefore, as disclosed in publication No. CN206640105U, by adding the monitoring photodetector 153 in front of the laser, that is, the substrate 151 is disposed in the housing 11, the substrate 151 is provided with the driving circuit and the laser output assembly, the laser output assembly includes the Photodiode (PD), the coupling device, the resonant cavity device 152 and the output device which are connected in sequence, the real-time power condition of the optical path can be monitored by the photodetector 153 through the design of the split optical path and the connection of the optical fiber, and the photodetector 153 is directly welded on the substrate 151.
When the optical path is in fault, the optical fiber burns, and along with the burning of the optical fiber, when the burning part passes through the photoelectric detector, a signal for closing the light source is sent, so that the safety of the laser is protected, the action of closing the light source is delayed, and larger damage is easily caused, so that a mechanism which is more comprehensive in monitoring and faster in response speed is needed to improve the stability of the laser.
Disclosure of Invention
The invention aims to provide a laser with an external monitoring function to improve the monitoring response speed.
In order to achieve the purpose of the invention, the invention provides a laser with an external monitoring function, which comprises a laser output body, a photoelectric detector and a connecting wire, wherein the laser output body comprises a shell, a substrate and an output optical fiber, the substrate is provided with a driving circuit and a laser output assembly, and the substrate, the driving circuit and the laser output assembly are all positioned in the shell; the driving circuit is connected with the laser output assembly, the output optical fiber is connected with the laser output assembly, and the output optical fiber penetrates out of the shell; the photoelectric detector is arranged outside the shell, and the connecting lead penetrates through the shell and is connected between the photoelectric detector and the driving circuit.
According to a further scheme, the laser further comprises an adjusting bracket, and the photoelectric detector is arranged on the adjusting bracket.
According to a further scheme, the adjusting support comprises an installation frame and an adjusting frame which are connected with each other, the photoelectric detector is fixedly installed on the installation frame, and the adjusting frame is provided with a connecting portion.
According to a further scheme, the laser further comprises a device to be tested, the output optical fiber is connected between the device to be tested and the laser output assembly, and the device to be tested is located outside the machine shell.
According to a further scheme, the laser further comprises a water cooling plate, the device to be tested is located on one side of the water cooling plate, and the photoelectric detector is arranged towards the water cooling plate.
The invention has the advantages that the photoelectric detector arranged outside the shell can externally monitor the environment outside the shell, the device to be tested or a water-cooled plate and other devices, then signals can be transmitted back to the driving circuit, the laser output assembly is connected with the device to be tested and outputs high-power laser, the residual laser power output is generated at the tail end of the device and can be emitted to the water-cooled plate, the laser is reflected and scattered on the surface of the water-cooled plate, the photoelectric detector is placed in a laser scattering area, the position and the angle are adjusted to obtain enough light power, the laser is confirmed on the driving circuit after the adjustment is finished, and when the detection power exceeds the set range, the laser is triggered to be closed, so that the laser and the whole test link can be protected. To the installation and the position control of photoelectric detector, the accessible is adjusted the support and is carried out stable installation and convenient position control.
Drawings
Fig. 1 is a block diagram of a laser in the prior art.
Fig. 2 is an internal structural view of a laser in the related art.
Fig. 3 is a system block diagram of a laser embodiment of the present invention.
The invention is further explained with reference to the drawings and the embodiments.
Detailed Description
Referring to fig. 3, the laser includes a laser output body, a photodetector 24, a connecting wire 26, an adjusting bracket 25, a device to be measured 23 and a water cooling plate 27, the laser output body includes a casing 21, a substrate and an output optical fiber 22, a driving circuit and a laser output assembly are arranged on the substrate, the driving circuit and the laser output assembly are both located in the casing 21, the laser output assembly includes a Photodiode (PD) connected in sequence, a coupling device, a resonant cavity device and an output device, the driving circuit is connected with the photodiode, so that the photodiode outputs a seed light source, the output optical fiber 22 is connected between the device to be measured 23 and the laser output assembly, the output optical fiber 22 penetrates out of the casing 21, and the device to be measured 23 is located outside the casing 21.
In addition, laser output subassembly still includes beam splitting light path and monitoring photoelectric detector, and beam splitting light path is connected with the resonant cavity device, and monitoring photoelectric detector welds on the base plate and is connected with beam splitting light path for monitoring photoelectric detector can monitor output.
Of course, in this embodiment, the device to be measured and the water-cooling plate may not be provided, and other devices such as a collimator and a beam expander may be used, and the photodetector may also monitor the operation environment or other devices.
The laser is reflected and scattered on the surface of the water cooling plate, the photoelectric detector is placed in a laser scattering area, the position and the angle are adjusted to obtain enough light power, the adjustment is confirmed on a driving circuit, the change of the output power is monitored through the external photoelectric detector, and when the change is larger than a set threshold value, a signal for turning off the light source is triggered, so that the laser and a test link are protected.
Claims (5)
1. A laser with an external monitoring function is characterized by comprising a laser output body, a photoelectric detector and a connecting wire, wherein the laser output body comprises a shell, a substrate and an output optical fiber, the substrate is provided with a driving circuit and a laser output assembly, and the substrate, the driving circuit and the laser output assembly are all positioned in the shell;
the driving circuit is connected with the laser output assembly, the output optical fiber is connected with the laser output assembly, and the output optical fiber penetrates out of the shell;
the photoelectric detector is positioned outside the shell, and the connecting lead passes through the shell and is connected between the photoelectric detector and the driving circuit.
2. The laser of claim 1, wherein:
the laser also comprises an adjusting bracket, and the photoelectric detector is arranged on the adjusting bracket.
3. The laser of claim 2, wherein:
the adjusting support comprises an interconnecting mounting frame and an adjusting frame, the photoelectric detector is fixedly mounted on the mounting frame, and the adjusting frame is provided with a connecting part.
4. The laser according to any one of claims 1 to 3, wherein:
the laser device further comprises a device to be tested, the output optical fiber is connected between the device to be tested and the laser output assembly, and the device to be tested is located outside the machine shell.
5. The laser of claim 4, wherein:
the laser device further comprises a water cooling plate, the device to be tested is located on one side of the water cooling plate, and the photoelectric detector faces the water cooling plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110986140.0A CN113872035A (en) | 2021-08-25 | 2021-08-25 | Laser with external monitoring function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110986140.0A CN113872035A (en) | 2021-08-25 | 2021-08-25 | Laser with external monitoring function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113872035A true CN113872035A (en) | 2021-12-31 |
Family
ID=78988495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110986140.0A Pending CN113872035A (en) | 2021-08-25 | 2021-08-25 | Laser with external monitoring function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113872035A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115241727A (en) * | 2022-09-23 | 2022-10-25 | 济南邦德激光股份有限公司 | Laser control method, laser and laser system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106602390A (en) * | 2016-12-30 | 2017-04-26 | 珠海光库科技股份有限公司 | Laser protection device, laser system, and method of using laser protection device and laser system |
-
2021
- 2021-08-25 CN CN202110986140.0A patent/CN113872035A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106602390A (en) * | 2016-12-30 | 2017-04-26 | 珠海光库科技股份有限公司 | Laser protection device, laser system, and method of using laser protection device and laser system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115241727A (en) * | 2022-09-23 | 2022-10-25 | 济南邦德激光股份有限公司 | Laser control method, laser and laser system |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211231 |