CN110518444A - Laser radar and its optical fiber laser - Google Patents
Laser radar and its optical fiber laser Download PDFInfo
- Publication number
- CN110518444A CN110518444A CN201910789897.3A CN201910789897A CN110518444A CN 110518444 A CN110518444 A CN 110518444A CN 201910789897 A CN201910789897 A CN 201910789897A CN 110518444 A CN110518444 A CN 110518444A
- Authority
- CN
- China
- Prior art keywords
- shell
- optical fiber
- laser
- fiber laser
- optical device
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
- G01S7/4804—Auxiliary means for detecting or identifying lidar signals or the like, e.g. laser illuminators
- G01S7/4806—Road traffic laser detectors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
- G01S7/481—Constructional features, e.g. arrangements of optical elements
- G01S7/4818—Constructional features, e.g. arrangements of optical elements using optical fibres
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
-
- 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
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
- H01S3/067—Fibre lasers
- H01S3/06704—Housings; Packages
Abstract
This application discloses a kind of laser radar and its optical fiber lasers.The optical fiber laser of the application includes: first shell, second shell, at least one active optical device and at least one passive optical device；First shell is covered in second shell, at least one passive optical device is set in first shell, at least one active optical device is set in second shell；The bottom of first shell is provided with the first lead slot for penetrating the arc of bottom, for will connect the fiber guides of at least one passive optical device in first shell into second shell or will connect the fiber guides of at least one active optical device in second shell into first shell.The optical fiber laser of the application is designed by using multi-laminate, reduces volume, and by using arc wire lead slot guiding optical cable, is reduced the damage in use process to optical fiber, improved the stability of device.
Description
Technical field
This application involves optical device field, in particular to a kind of laser radar and its optical fiber laser.
Background technique
Optical fiber laser refers to the laser for using the glass optical fiber of doped rare earth element as gain media.Currently, using
Optical fiber laser as in the laser radar of probe source, due to the use temperature range of optical fiber laser is limited and volume compared with
Greatly, and the probe unit of laser radar is biggish pyrotoxin, therefore usually by optical fiber laser and laser radar detection unit point
It opens up and sets, for example, optical fiber laser is set to the lower place of vehicle interior temperature.Laser radar under this setup is whole
Volume is larger, and when laser radar to be installed on automobile, optical fiber and signal between optical fiber laser and probe unit
Line needs to walk long path across car body, therefore, the wiring of laser radar is more complicated and signal integrity vulnerable to
It influences, and fibre-optical splice also damages laser with having no early warning vulnerable to the influence of koniology.
Summary of the invention
The application's is designed to provide a kind of laser radar and its optical fiber laser, by using stack design, optical fiber
The volume of laser is reduced, and is reduced and used by using arc wire lead slot guiding optical cable in optical fiber laser
To the damage of optical fiber in journey, the stability of device is improved.
In a first aspect, embodiments herein discloses a kind of optical fiber laser, including first shell, second shell, extremely
A few active optical device and at least one passive optical device；
The first shell is covered in the second shell, at least one described passive optical device is set to described
In one shell, at least one described active optical device is set in the second shell；
The bottom of the first shell is provided with the first lead slot for penetrating the arc of the bottom, is used for described first
The fiber guides of at least one passive optical device are connected in shell into the second shell or by the second shell
The fiber guides of at least one active optical device are connected in body into the first shell.
In a kind of possible realization of above-mentioned first aspect, the radius of the first lead slot of the arc is greater than described the
The minimum bending radius of optical fiber in one wire lead slot.
In a kind of possible realization of above-mentioned first aspect, arc outlet is additionally provided on the side wall of the first shell
Slot, for by the fiber guides in the first shell to the outside of the optical fiber laser.
In a kind of possible realization of above-mentioned first aspect, it is provided with casing at the outlet slot, the one of described sleeve pipe
End is located at the inside of the first shell, and the other end of described sleeve pipe is located at the outside of the first shell, and described first
The optical fiber in shell is directed to the outside of the optical fiber laser after described sleeve pipe.
In a kind of possible realization of above-mentioned first aspect, the radius of the outlet slot is greater than the light in the outlet slot
Fine minimum bending radius.
In a kind of possible realization of above-mentioned first aspect, the second of arc is provided on the side wall of the first shell
Wire lead slot, for by the fiber guides in the first shell into the first lead slot or guidance is to the outlet slot
In, also, the radius of second wire lead slot is greater than the minimum bending radius of the optical fiber in second wire lead slot.
In a kind of possible realization of above-mentioned first aspect, multiple installations are provided on the top surface of the first shell
Slot, at least one described passive optical device are set in the mounting groove.
In a kind of possible realization of above-mentioned first aspect, the optical fiber laser further includes being set to the second shell
Laser circuit plate in body, at least one described active optical device are arranged on the laser circuit plate.
In a kind of possible realization of above-mentioned first aspect, the optical fiber laser further includes radiating part, the heat dissipation
Portion includes heat pad and boss, wherein the heat pad is arranged on the laser circuit plate, and the boss is arranged in the first shell
The outside of body bottom surface, also, the position of the boss is corresponding with the position of the heat pad.
Second aspect, embodiments herein disclose a kind of laser radar, the laser radar include first aspect and its
Optical fiber laser in being respectively able to achieve.
Detailed description of the invention
Fig. 1 shows the structural schematic diagram of optical fiber laser according to some embodiments of the present application；
Fig. 2 shows the structural decomposition diagram of optical fiber laser according to some embodiments of the present application；
Fig. 3 according to some embodiments of the present application, show the first shell of optical fiber laser shown in fig. 1 or fig. 2 with
Top cover opposite side structural schematic diagram；
Fig. 4 according to some embodiments of the present application, show the first shell of optical fiber laser shown in fig. 1 or fig. 2 with
Second shell opposite side structural schematic diagram；
Fig. 5 according to some embodiments of the present application, show the first shell of optical fiber laser shown in fig. 1 or fig. 2 with
Top cover opposite side structural schematic diagram；
Fig. 6 shows the second shell of optical fiber laser shown in fig. 1 or fig. 2 according to some embodiments of the present application
Structural schematic diagram.
Specific embodiment
The illustrative embodiments of the application includes but is not limited to a kind of optical fiber laser and its laser radar.
The term for using those skilled in the art to generally use is described the various aspects of illustrative embodiments by the application,
Others skilled in the art are communicated to the essence that they work.However, be apparent to those skilled in the art
It is that the part of described aspect can be used to practice some alternate embodiments.For illustrative purposes, to provide to explanation
Property embodiment thorough understanding, specific number, material and configuration are illustrated.However, coming for those skilled in the art
It says it is readily apparent that alternative embodiment can be realized without specific details.In other cases, in order not to
Illustrative embodiments is caused to obscure, some well known features have been omitted or simplified.
Implementation to keep the purposes, technical schemes and advantages of the application clearer, below in conjunction with attached drawing to the application
Example is described in further detail.
According to some embodiments of the present application, a kind of optical fiber laser is disclosed, Fig. 1 and 2 respectively illustrates the optical fiber and swashs
A kind of structural schematic diagram and structural decomposition diagram of light device.As illustrated in fig. 1 and 2, the optical fiber laser include top cover 1, it is similar
In rectangular first shell 2, similar to rectangular second shell 3, passive optical device 5, laser circuit plate 6, seed laser
7, level-one pump laser 8, diode pumping laser 9 and floppy disk line interface 10.
It is appreciated that first shell 2 uses similar rectangular shape, upper and lower and side with second shell 3 compared with circle
Face can radiate, and heat dissipation effect is preferable.Certainly, in specific implementation, first shell 2 and second shell 3 can be using not
The concrete shape of same shape, first shell 2 and second shell 3 is not construed as limiting protection scope of the present invention.
It as shown in Figures 2 and 3, is round inside first shell 2.Mounting groove 4, each nothing are provided on the bottom surface of first shell 2
Source optical device 5 is arranged in mounting groove 4, and the quantity of mounting groove 4 can be identical as the quantity of passive optical device 5, can also be with
Quantity than passive optical device 5 is more, to make optical fiber laser have scalability, increases it as needed subsequent
His passive optical device.In addition, in order to improve the heat dissipation of passive optical device 5, it can be in the bottom coated with thermally conductive material of mounting groove 4
The coating of material.
It is appreciated that in this application, passive optical device refers to the optical device without power supply, for example, passive optical
Device can be bundling device, collimator or oscillator etc..And active optical device refers to the optical device that needs are powered, for example,
Seed laser 7, level-one pump laser 8 and diode pumping laser on laser circuit plate 6 in second shell 3 are set
Device 9.
As shown in figure 4, the bottom of first shell 2 is additionally provided with the wire lead slot 12 for penetrating the housing bottom, first shell is connected
Active optical device (seed laser 7 as shown in Figure 3, primary pump in body 2 in passive optical device 5 and second shell 3
Pu laser 8 and diode pumping laser 9) optical fiber by wire lead slot 12 be directed across first shell 2 bottom enter
First is entered from the bottom that second shell 3 passes through first shell 2 into second shell 3, or through the guidance of wire lead slot 12
In shell 3.As shown in figure 4, since wire lead slot 12 is arc, and the radius of the arc wire lead slot 12 is more than or equal to optical fiber in slot
Minimum bending radius, therefore can reduce optical fiber pass through first shell 2 bottom when due to bend caused by loss.
In addition, as shown in Figure 3 and Figure 5, on the side wall of first shell 2, also outlet slot 13 and arc with arc
The radius of wire lead slot 14, outlet slot 13 and wire lead slot 14 is greater than or equal to the minimum bending radius of the optical fiber in respectively.First shell
Optical fiber in body 2 can be coiled in the arc wire lead slot 14 of side wall to avoid the loss because of caused by bending, and save first
Space in shell 2.For needing to draw the optical fiber of optical fiber laser, first shell 2 can be directed by outlet slot 13
Outside, and the arc of outlet slot 13 be arranged, can equally reduce when drawing optical fiber because bending optical fiber caused by damage.It can
To understand, in some embodiments, casing 16 is embedded in outlet slot 13, inside first shell 2, one end exists for one end of casing 16
The outside of first shell 12.Optical fiber in outlet slot 13 is drawn out to the outside of first shell 12 after casing 16.
As shown in fig. 6, being provided with laser circuit plate 6 in second shell 3, seed laser is provided on laser circuit plate 6
7, level-one pump laser 8 and diode pumping laser 9.Swash to pump the biggish seed laser 7 of heat exhaust, level-one
The heat derives that light device 8 and diode pumping laser 9 generate, can be arranged multiple heat pads 11, together on laser circuit plate 6
When, quantity and position multiple boss corresponding with heat pad 11 are set on the opposite bottom surface in 2 bottom of first shell and second shell 3
15.Wherein, the external interface of laser circuit plate 6 uses floppy disk line 10, and compared with using electric wire, the volume of floppy disk line 10 is smaller；
Or external interface uses the wiring of waterproof construction, to reach the waterproof effect of entire laser.It is appreciated that in other implementations
In mode, it is not limited to setting two-stage pump laser, level-one or multistage pump laser can be set, herein with no restrictions.
It is appreciated that in this application, the bottom or bottom surface of first shell 2 are for top cover 1.At certain
In a little embodiments, it can also be referred to as the top of first shell 2, for example, for second shell 3.
Furthermore, it is to be understood that the lid of first shell 2 is located at second shell 3 in optical fiber laser shown in fig 1 and 2
On, top cover 1 covers in first shell 2, therefore the structure of entire optical fiber laser can be regarded as totally enclosed, and each optical device exists
The light generated in the course of work will not escape to the outside of optical fiber laser, to avoid influencing in laser radar, optical fiber swashs
The optical tests of sensitive detection parts outside light device.
In the accompanying drawings, some structure or method features can be shown with specific arrangements and/or sequence.It should be appreciated, however, that
It may not be needed such specific arrangements and/or sequence.But in some embodiments, these features can be to be different from saying
Bright property mode shown in the drawings and/or sequence are arranged.In addition, including that structure or method feature is not intended in specific pattern
Imply and require such feature in all embodiments, and in some embodiments, can not include these features or
Person can combine with other features.
It should be noted that in the example and specification of this patent, relational terms such as first and second and the like
It is only used to distinguish one entity or operation from another entity or operation, without necessarily requiring or implying these
There are any actual relationship or orders between entity or operation.Moreover, the terms "include", "comprise" or its is any
Other variants are intended to non-exclusive inclusion, so that including the process, method, article or equipment of a series of elements
Include not only those elements, but also including other elements that are not explicitly listed, or further includes for this process, side
Method, article or the intrinsic element of equipment.In the absence of more restrictions, being wanted by what sentence " including one " limited
Element, it is not excluded that there is also other identical elements in the process, method, article or apparatus that includes the element.
Although being shown and described to the application by referring to certain preferred embodiments of the application, this
The those of ordinary skill in field should be understood that can to it, various changes can be made in the form and details, without departing from the application
Spirit and scope.
Claims (10)
1. a kind of optical fiber laser, which is characterized in that including first shell, second shell, at least one active optical device and
At least one passive optical device；
The first shell is covered in the second shell, at least one described passive optical device is set to the first shell
In body, at least one described active optical device is set in the second shell；
The bottom of the first shell is provided with the first lead slot for penetrating the arc of the bottom, is used for the first shell
The fiber guides of at least one passive optical device described in middle connection are into the second shell or will be in the second shell
The fiber guides of at least one active optical device are connected into the first shell.
2. optical fiber laser as described in claim 1, which is characterized in that the radius of the first lead slot of the arc is greater than institute
State the minimum bending radius of the optical fiber in first lead slot.
3. optical fiber laser as claimed in claim 1 or 2, which is characterized in that be additionally provided on the side wall of the first shell
Arc outlet slot, for by the fiber guides in the first shell to the outside of the optical fiber laser.
4. optical fiber laser as claimed in claim 3, which is characterized in that be provided with casing, described sleeve pipe at the outlet slot
One end be located at the inside of the first shell, the other end of described sleeve pipe is located at the outside of the first shell, and described
The optical fiber in first shell is directed to the outside of the optical fiber laser after described sleeve pipe.
5. optical fiber laser as described in claim 3 or 4, which is characterized in that the radius of the outlet slot is greater than the outlet
The minimum bending radius of optical fiber in slot.
6. the optical fiber laser as described in any one of claims 1 to 5, which is characterized in that on the side wall of the first shell
Be provided with the second wire lead slot of arc, for by the fiber optic disc around in the first shell the first shell side wall,
Wherein, the radius of the second wire lead slot is greater than the minimum bending radius of the optical fiber in second wire lead slot.
7. such as optical fiber laser described in any one of claims 1 to 6, which is characterized in that on the top surface of the first shell
Multiple mounting grooves are provided with, at least one described passive optical device is set in the mounting groove.
8. the optical fiber laser as described in any one of claims 1 to 7, which is characterized in that further include being set to described second
Laser circuit plate in shell, at least one described active optical device are arranged on the laser circuit plate.
9. optical fiber laser as claimed in claim 8, which is characterized in that further include heat pad and boss, wherein the heat pad is set
It sets on the laser circuit plate, the first shell bottom bottom surface opposite with shown second shell is arranged in the boss
On, also, the position of the boss and the position of the heat pad correspond.
10. a kind of laser radar, which is characterized in that including optical fiber laser as claimed in any one of claims 1-9 wherein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910789897.3A CN110518444A (en) | 2019-08-26 | 2019-08-26 | Laser radar and its optical fiber laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910789897.3A CN110518444A (en) | 2019-08-26 | 2019-08-26 | Laser radar and its optical fiber laser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110518444A true CN110518444A (en) | 2019-11-29 |
Family
ID=68627002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910789897.3A Pending CN110518444A (en) | 2019-08-26 | 2019-08-26 | Laser radar and its optical fiber laser |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5668909A (en) * | 1994-02-15 | 1997-09-16 | Pirelli Cavi S.P.A. | Container for housing optical components in an active fiber optical amplifier |
| US20020037147A1 (en) * | 2000-07-31 | 2002-03-28 | Mclean Thomas | Multi-level optical fiber and component storage tray |
| CN102324684A (en) * | 2011-08-04 | 2012-01-18 | 无锡市中兴光电子技术有限公司 | Small optical fiber amplifier |
| CN103022868A (en) * | 2012-12-25 | 2013-04-03 | 中国电子科技集团公司第十一研究所 | Pulse optical fiber laser |
| CN206685693U (en) * | 2017-05-09 | 2017-11-28 | 山东海富光子科技股份有限公司 | A kind of optical fiber laser |
| CN208093942U (en) * | 2018-04-13 | 2018-11-13 | 浙江杰昆科技有限公司 | A kind of fiber amplifier |
-
2019
- 2019-08-26 CN CN201910789897.3A patent/CN110518444A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5668909A (en) * | 1994-02-15 | 1997-09-16 | Pirelli Cavi S.P.A. | Container for housing optical components in an active fiber optical amplifier |
| US20020037147A1 (en) * | 2000-07-31 | 2002-03-28 | Mclean Thomas | Multi-level optical fiber and component storage tray |
| CN102324684A (en) * | 2011-08-04 | 2012-01-18 | 无锡市中兴光电子技术有限公司 | Small optical fiber amplifier |
| CN103022868A (en) * | 2012-12-25 | 2013-04-03 | 中国电子科技集团公司第十一研究所 | Pulse optical fiber laser |
| CN206685693U (en) * | 2017-05-09 | 2017-11-28 | 山东海富光子科技股份有限公司 | A kind of optical fiber laser |
| CN208093942U (en) * | 2018-04-13 | 2018-11-13 | 浙江杰昆科技有限公司 | A kind of fiber amplifier |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: No.2 building, no.468 xinlai Road, Jiading District, Shanghai, 201821 Applicant after: Shanghai Hesai Technology Co., Ltd Address before: 201101 building L2, Hongqiao world center, Lane 1588, Zhuguang Road, Qingpu District, Shanghai Applicant before: HESAI PHOTONICS TECHNOLOGY Co.,Ltd. |
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| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: No.2 building, no.468 xinlai Road, Jiading District, Shanghai, 201821 Applicant after: Shanghai Hesai Technology Co.,Ltd. Address before: No.2 building, no.468 xinlai Road, Jiading District, Shanghai, 201821 Applicant before: Shanghai Hesai Technology Co., Ltd |
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| CB02 | Change of applicant information |