CN115656694A - Aging device of laser - Google Patents
Aging device of laser Download PDFInfo
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- CN115656694A CN115656694A CN202211404468.8A CN202211404468A CN115656694A CN 115656694 A CN115656694 A CN 115656694A CN 202211404468 A CN202211404468 A CN 202211404468A CN 115656694 A CN115656694 A CN 115656694A
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Abstract
The invention discloses an aging device of a laser, which comprises: the laser device comprises a temperature control barrel, wherein a mounting area for mounting a laser device is arranged on the outer side surface of the temperature control barrel, and at least one end of the temperature control barrel is provided with an air blower which is used for blowing air into the temperature control barrel; the temperature measuring unit is used for monitoring the temperature of the laser; the control unit controls the blowing speed of the blower according to the temperature measured by the temperature measuring unit; when the blowing speed of the blower is zero, the heat dissipation power of the laser on the temperature control barrel is smaller than the heating power of the laser, and when the blowing speed of the blower is maximum, the heat dissipation power of the laser on the temperature control barrel is not smaller than the heating power of the laser. The aging device has the advantages of simple structure, small volume, low power consumption, low aging cost, high-temperature aging and the like.
Description
Technical Field
The invention belongs to the technical field of lasers, and particularly relates to an aging device of a laser.
Background
Before the laser is put into use, the laser is required to be aged and screened to intercept the early-failure laser, so that the laser which is actually put into use works in a random failure section in a bathtub failure curve, and the failure rate of the laser in the normal service life is further reduced.
Because the laser generates a large amount of heat in the aging process, the laser needs to be cooled to maintain the temperature at room temperature (about 25 ℃), and the laser is cooled by a water cooling machine. In the use occasions with harsh environmental requirements or when accelerated aging is needed, the laser needs to be aged at high temperature, namely, the laser is aged at the temperature higher than room temperature. At this time, the laser needs to be properly cooled or heated to reach thermal equilibrium under a set high temperature condition, so as to avoid burning out the laser due to overhigh temperature and avoid the aging effect due to overlow temperature.
At present, the following two temperature control modes are mainly adopted in the high-temperature aging process of the laser:
1. and the liquid medium is circulated for controlling the temperature. The water cooling machine drives the liquid circulation medium with constant temperature to exchange heat with the laser, so that the laser can be cooled when the heating value of the laser is large, and the laser is heated when the heating value of the laser is small, thereby achieving heat balance and maintaining the laser at the set temperature. However, the maximum temperature that the water cooler can usually maintain is only about 70 ℃, aging temperature control higher than 100 ℃ is difficult to achieve, and the water cooler needs to be specially configured with hardware such as pipelines and water cooling plates for high-temperature aging, so that the temperature control equipment is large in overall volume and large in floor area. In addition, high-energy-consumption equipment such as a compressor, a heater and the like needs to be driven in the temperature control process, so that the energy consumption is large, and the aging cost of the laser is high.
And 2, controlling the temperature by using the TEC. The TEC semiconductor refrigerator is used for controlling the temperature of the laser, and the TEC semiconductor refrigerator transmits heat from one end of the refrigerator to the other end of the refrigerator by consuming electric energy, so that the laser is cooled or heated, and the laser is kept in thermal balance. However, this temperature control method requires additional water or air supply to the TEC semiconductor cooler to remove heat generated by the laser and the TEC semiconductor cooler, which results in an extremely complicated overall structure of the temperature control apparatus. In addition, the TEC semiconductor refrigerator has high energy consumption, and this temperature control method requires additional water cooling or air cooling energy consumption, resulting in high overall energy consumption of the temperature control device, and also increasing the aging cost of the laser.
Disclosure of Invention
In view of the above problems, the present invention discloses a laser aging apparatus to overcome the above problems or at least partially solve the above problems.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides an aging device of a laser, comprising:
the laser device comprises a temperature control barrel, wherein an installation area for installing a laser is arranged on the outer side surface of the temperature control barrel, and at least one end of the temperature control barrel is provided with an air blower which is used for blowing air into the temperature control barrel;
the temperature measuring unit is used for monitoring the temperature of the laser;
the control unit controls the blowing speed of the blower according to the temperature measured by the temperature measuring unit;
when the blowing speed of the blower is zero, the heat dissipation power of the laser on the temperature control cylinder is smaller than the heating power of the laser, and when the blowing speed of the blower is maximum, the heat dissipation power of the laser on the temperature control cylinder is not smaller than the heating power of the laser.
Further, the aging apparatus further includes:
the device comprises a light absorption barrel, wherein at least one end of the light absorption barrel is provided with a fan;
the light absorption unit is fixed on the light absorption barrel and used for absorbing and converting laser energy emitted by the laser into heat.
Furthermore, a heat dissipation plate is arranged on the outer side surface of the light absorption barrel.
Further, the aging apparatus further includes:
the light absorption unit is fixed on the temperature control cylinder and is used for absorbing and converting laser energy emitted by the laser into heat;
when the blowing speed of the blower is zero, the heat dissipation power of the laser on the temperature control barrel is smaller than the sum of the heating power and the light output power of the laser, and when the blowing speed of the blower is maximum, the heat dissipation power of the laser on the temperature control barrel is not smaller than the sum of the heating power and the light output power of the laser.
Furthermore, a photoelectric sensing unit is arranged on the light absorption unit and used for identifying the energy state of the laser output by the laser.
Further, the photoelectric sensing unit is a photodiode sensor.
Further, the aging apparatus further includes:
and the isolation cover covers the outer side of the laser.
Furthermore, a mounting area on the temperature control cylinder is provided with silica gel or graphite sheets.
Furthermore, the temperature measuring unit is a temperature measuring probe.
Furthermore, a fixing hole is formed in the temperature control cylinder, and the laser is fixedly installed on an installation area of the temperature control cylinder through the fixing hole.
The invention has the advantages and beneficial effects that:
in the aging device, the laser is heated to the set aging temperature by utilizing the heat generated by the laser, no additional heating device is needed, and the air cooling air volume is controlled by temperature feedback, so that the heating and the heat dissipation of the laser are balanced thermally, and the laser is maintained at the set aging temperature; the aging device has the advantages of simple structure, small volume, low power consumption, low aging cost, high-temperature aging and the like.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is a perspective view of a laser aging apparatus according to embodiment 1 of the present invention;
FIG. 2 is a perspective view showing a structure of a temperature control cylinder in embodiment 1 of the present invention;
fig. 3 is a perspective view of a laser aging apparatus in embodiment 2 of the present invention.
In the figure: 1. a temperature control cylinder; 2. a laser; 3. a blower; 4. a light-absorbing barrel; 5. a fan; 6. a heat dissipation plate; 7. a fixing hole; 8. an optical fiber.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail and fully with reference to the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. 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.
The technical solutions provided by the embodiments of the present invention are described in detail below with reference to the accompanying drawings.
Example 1
In this embodiment, an aging apparatus for a laser is disclosed, as shown in fig. 1, the aging apparatus includes:
a temperature control section of thick bamboo 1 is equipped with the installation region who is used for installing laser instrument 2 on the lateral surface of a temperature control section of thick bamboo 1, and laser instrument 2 dispels the heat through a temperature control section of thick bamboo 1 to the both ends of a temperature control section of thick bamboo 1 all are equipped with air-blower 3, and air-blower 3 is used for the air-blast to in a temperature control section of thick bamboo 1, takes away the heat on a temperature control section of thick bamboo 1, and then reduces the temperature of laser instrument 2. Wherein, the temperature control cylinder 1 is made of a material with excellent heat conductivity, so that heat on the laser 2 is more easily transferred to the temperature control cylinder 1. For example, the temperature control cylinder 1 is made of a metal material.
And the temperature measuring unit is used for monitoring the temperature of the laser 2 in real time. Preferably, the temperature measuring unit is a temperature measuring probe, and of course, the temperature measuring unit may be other electronic devices with temperature measuring function.
The control unit controls the blowing speed of the blower 3 according to the temperature measured by the temperature measuring unit; specifically, when the temperature of the laser 2 measured by the temperature measuring unit is higher than the set aging temperature, the control unit controls the blower 3 to increase the blowing speed, so as to reduce the temperature of the laser 2; when the temperature of the laser 2 measured by the temperature measuring unit is lower than the set aging temperature, the control unit controls the air blower 3 to reduce the air blowing speed, so that the temperature of the laser 2 is increased, the temperature of the laser 2 is kept at the set aging temperature, and the heat dissipation power of the laser 2 on the temperature control barrel 1 is just equal to the heating power of the laser 2, so that the heat balance is realized.
The heat dissipation power of the laser 2 on the temperature control barrel 1 is smaller than the heating power of the laser 2 when the blowing speed of the blower 3 is zero, and the heat dissipation power of the laser 2 on the temperature control barrel 1 is not smaller than the heating power of the laser 2 when the blowing speed of the blower 3 is maximum, so that the temperature of the laser 2 can be regulated and controlled by adjusting the blowing speed of the blower 3, and the temperature of the laser 2 can reach the set aging temperature.
In addition, when the set aging temperature is higher or the heating power of the laser is lower, a plurality of lasers can be installed on the temperature control cylinder, and then the total heating power of the lasers is increased. For example, 10 lasers are installed on the temperature control cylinder, the heat dissipation power of the lasers on the temperature control cylinder is 20W when the blowing speed of the blower is zero, the heating power of the lasers in working is 100W, and the heat dissipation power of the lasers on the temperature control cylinder is 150W when the blowing speed of the blower is maximum, so that the lasers can be stably aged at the high temperature of 85 ℃. Moreover, the shape and size of the temperature control cylinder, the number of blowers and the number of installed lasers in the aging device can be adjusted according to needs, as long as the relationship between the heat dissipation power and the heat generation power is satisfied. For example, in other embodiments, only one end of the temperature-controlled canister is provided with a blower.
The working process of the aging device is as follows: when the laser starts to work, the temperature of the laser continuously rises, and the blower does not work at the moment; when the temperature of the laser reaches the set aging temperature, the blower starts to work, and the control unit regulates and controls the blowing speed of the blower according to the temperature of the laser measured by the temperature measuring unit, so that the temperature of the laser is stabilized at the set aging temperature.
In the ageing device of this embodiment, heat through utilizing laser instrument self to produce heats the ageing temperature of settlement to the laser instrument, and the amount of wind through temperature feedback control forced air cooling, make the laser instrument generate heat and dispel the heat and reach thermal balance, thereby make the laser instrument maintain at the ageing temperature of settlement, it needs to heat the laser instrument alone to have saved among the traditional high temperature ageing device, the heating of laser instrument need not to receive external heating equipment's temperature restriction like this, can make the laser instrument heat to higher temperature, realize the high temperature ageing of laser instrument, for example, realize being greater than ageing under the 100 ℃ temperature. The aging device has the advantages of simple structure, small volume, low power consumption, low aging cost, high-temperature aging and the like, is beneficial to large-scale production expansion, and can effectively improve the high-temperature aging capacity of the laser.
In this embodiment, as shown in fig. 1, the aging apparatus further includes:
the light absorption device comprises a light absorption barrel 4, wherein one end of the light absorption barrel 4 is provided with a fan 5, and the fan 5 is used for blowing air into the light absorption barrel 4 and taking away heat on the light absorption barrel 4.
And the light absorption unit (not shown in the figure) is fixed on the light absorption barrel 4, the laser 2 is connected with the light absorption unit through an optical fiber 8, and the light absorption unit is used for absorbing and converting laser energy emitted by the laser 2 into heat and then dissipating the heat through air cooling, so that the laser can be prevented from generating light pollution.
When the fan 5 is at the maximum rotation speed, the heat dissipation power of the light absorption unit on the light absorption cylinder 4 is not less than the light output power of the laser 2, so that the laser energy absorbed by the light absorption unit can be dissipated.
In addition, the heat dissipation plate 6 is arranged on the outer side surface of the light absorption barrel 4, and the heat dissipation plate 6 can increase the heat dissipation capacity of the light absorption barrel 4.
In other embodiments, the fans are arranged at the two ends of the light absorption cylinder, so that more air can pass through the light absorption cylinder, and the heat dissipation capacity of the light absorption cylinder is further enhanced.
In this embodiment, the plurality of lasers correspondingly use the plurality of light absorption units, and the plurality of light absorption units are disposed on the same side of the light absorption barrel, while in other embodiments, the plurality of light absorption units correspondingly used by the plurality of lasers may be disposed on different sides of the light absorption barrel, respectively. Of course, a plurality of lasers may share one light absorbing unit. Also, in other embodiments, the light absorbing unit may be disposed inside the light absorbing cylinder.
Further, the aging apparatus further includes:
the isolation cover (not shown in the figure) covers the outer side of the laser, so that the laser can be isolated from the external environment, the stability of the environment where the laser is located is ensured, and the laser can be protected from physical damage in the aging process.
In this embodiment, the light absorption unit is provided with a photoelectric sensing unit, and the photoelectric sensing unit is used for identifying the energy state of the laser output by the laser, so that whether the laser fails in the aging process can be judged through the photoelectric sensing unit. The photoelectric sensing unit is a photodiode sensor, and of course, the photoelectric sensing unit may also be other devices having a photoelectric sensing function.
Further, the installation area on the temperature control cylinder is provided with silica gel or graphite flakes, when the laser is installed on the temperature control cylinder, the silica gel or graphite flakes are just positioned between the laser and the temperature control cylinder, so that the heat conduction and the heat dissipation between the laser and the temperature control cylinder can be increased, the temperature of each laser is consistent, and the temperature of a plurality of lasers can be kept consistent.
In the present embodiment, as shown in fig. 2, the temperature-controlled cylinder 1 is provided with a fixing hole 7, and the laser 2 is fixed on the mounting area of the temperature-controlled cylinder 1 through the fixing hole 7. The laser can also be fixed on the temperature control cylinder through a buckle structure, and the invention is also within the protection scope of the invention.
Example 2
The present embodiment is different from embodiment 1 in that, as shown in fig. 3, the aging apparatus further includes:
the laser aging device comprises a light absorption unit (not shown in the figure), the light absorption unit is directly fixed on a temperature control barrel 1, the design of the light absorption barrel is omitted, a laser 2 is connected with the light absorption unit through an optical fiber 8, the light absorption unit can absorb laser energy emitted by the laser 2 and convert the laser energy into heat, the generated heat can be absorbed by the temperature control barrel 1, the laser 2 is heated and warmed together with the heat generated by the laser 2 during working, the dual heating effects of self-heating and laser heating of the laser are realized, the temperature of the laser 2 can quickly reach a set aging temperature, the laser energy which is originally wasted as waste heat is utilized, the energy consumption in the laser aging process is further reduced, and the aging cost of the laser is further reduced.
When the blowing speed of the blower is zero, the heat dissipation power of the laser on the temperature control barrel is smaller than the sum of the heating power and the light emitting power of the laser, and when the blowing speed of the blower is maximum, the heat dissipation power of the laser on the temperature control barrel is not smaller than the sum of the heating power and the light emitting power of the laser, so that the temperature of the laser can reach the set aging temperature by regulating and controlling the blowing speed of the blower. When the temperature of the laser reaches the set aging temperature, the blowing speed of the blower is at a certain speed, so that the heat dissipation power of the laser on the temperature control cylinder is exactly equal to the sum of the heating power and the light emitting power of the laser, and the heat balance is achieved at the moment.
In this embodiment, a plurality of lasers correspond to use a plurality of light absorption units, and a plurality of light absorption units are disposed on the same side of the temperature control cylinder, and in other embodiments, a plurality of light absorption units corresponding to use a plurality of lasers may be disposed on different sides of the temperature control cylinder, respectively, to heat different positions of the temperature control cylinder, so as to achieve the effect of heating a plurality of lasers by uniformly heating up, and of course, a plurality of lasers may also share one light absorption unit. In addition, in other embodiments, the light absorption unit can also be arranged inside the temperature control cylinder, so that the uniformity of the overall temperature rise of the temperature control cylinder can be ensured.
While the foregoing is directed to embodiments of the present invention, other modifications and variations of the present invention may be devised by those skilled in the art in light of the foregoing teachings. It should be understood by those skilled in the art that the foregoing detailed description is for the purpose of better explaining the present invention, and the scope of the present invention should be determined by the scope of the appended claims.
Claims (10)
1. An aging apparatus of a laser, comprising:
the laser device comprises a temperature control barrel, wherein an installation area for installing a laser is arranged on the outer side surface of the temperature control barrel, and at least one end of the temperature control barrel is provided with an air blower which is used for blowing air into the temperature control barrel;
the temperature measuring unit is used for monitoring the temperature of the laser;
the control unit controls the blowing speed of the blower according to the temperature measured by the temperature measuring unit;
when the blowing speed of the blower is zero, the heat dissipation power of the laser on the temperature control cylinder is smaller than the heating power of the laser, and when the blowing speed of the blower is maximum, the heat dissipation power of the laser on the temperature control cylinder is not smaller than the heating power of the laser.
2. The aging apparatus for a laser device according to claim 1, further comprising:
the device comprises a light absorption barrel, wherein at least one end of the light absorption barrel is provided with a fan;
the light absorption unit is fixed on the light absorption barrel and used for absorbing and converting laser energy emitted by the laser into heat.
3. The aging apparatus for laser according to claim 2, wherein a heat dissipating plate is provided on an outer side surface of the light absorbing cylinder.
4. The aging apparatus of the laser of claim 1, further comprising:
the light absorption unit is fixed on the temperature control cylinder and is used for absorbing and converting laser energy emitted by the laser into heat;
when the blowing speed of the blower is zero, the heat dissipation power of the laser on the temperature control barrel is smaller than the sum of the heating power and the light output power of the laser, and when the blowing speed of the blower is maximum, the heat dissipation power of the laser on the temperature control barrel is not smaller than the sum of the heating power and the light output power of the laser.
5. The aging apparatus for the laser according to any one of claims 2 to 4, wherein a photoelectric sensing unit is disposed on the light absorption unit, and the photoelectric sensing unit is used for identifying the energy state of the laser output by the laser.
6. The aging apparatus of the laser as claimed in claim 5, wherein the photo-sensing unit is a photodiode sensor.
7. The aging apparatus for a laser according to any one of claims 1 to 4, further comprising:
and the isolation cover covers the outer side of the laser.
8. The aging apparatus for laser according to any one of claims 1 to 4, wherein the mounting area on the temperature controlled cylinder is provided with a silicon or graphite sheet.
9. The aging apparatus for a laser according to any one of claims 1 to 4, wherein the temperature measuring unit is a temperature measuring probe.
10. The aging apparatus for a laser according to any one of claims 1 to 4, wherein the temperature control barrel is provided with a fixing hole, and the laser is fixedly mounted on the mounting region of the temperature control barrel through the fixing hole.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211404468.8A CN115656694B (en) | 2022-11-10 | 2022-11-10 | Aging device of laser |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211404468.8A CN115656694B (en) | 2022-11-10 | 2022-11-10 | Aging device of laser |
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| CN115656694A true CN115656694A (en) | 2023-01-31 |
| CN115656694B CN115656694B (en) | 2023-05-30 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0315774A (en) * | 1989-06-13 | 1991-01-24 | Nec Corp | Printed board for burn-in |
| JP2005121625A (en) * | 2003-09-24 | 2005-05-12 | Sharp Corp | Burn-in apparatus |
| JP2006226876A (en) * | 2005-02-18 | 2006-08-31 | Matsushita Electric Ind Co Ltd | Burn-in apparatus for semiconductor laser device |
| CN103969025A (en) * | 2013-02-06 | 2014-08-06 | 北京中视中科光电技术有限公司 | Laser device aging testing cabinet |
| CN108168844A (en) * | 2017-12-26 | 2018-06-15 | 大族激光科技产业集团股份有限公司 | Laser ageing device and aging method |
| CN210534298U (en) * | 2019-07-30 | 2020-05-15 | 广州锐影电子科技有限公司 | Lamp aging test frame |
| CN211824965U (en) * | 2020-05-18 | 2020-10-30 | 上海飞博激光科技有限公司 | Multichannel fiber laser aging device |
| CN113866585A (en) * | 2020-06-30 | 2021-12-31 | 武汉普斯讯科技有限公司 | Miniature laser chip aging test system |
-
2022
- 2022-11-10 CN CN202211404468.8A patent/CN115656694B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0315774A (en) * | 1989-06-13 | 1991-01-24 | Nec Corp | Printed board for burn-in |
| JP2005121625A (en) * | 2003-09-24 | 2005-05-12 | Sharp Corp | Burn-in apparatus |
| JP2006226876A (en) * | 2005-02-18 | 2006-08-31 | Matsushita Electric Ind Co Ltd | Burn-in apparatus for semiconductor laser device |
| CN103969025A (en) * | 2013-02-06 | 2014-08-06 | 北京中视中科光电技术有限公司 | Laser device aging testing cabinet |
| CN108168844A (en) * | 2017-12-26 | 2018-06-15 | 大族激光科技产业集团股份有限公司 | Laser ageing device and aging method |
| CN210534298U (en) * | 2019-07-30 | 2020-05-15 | 广州锐影电子科技有限公司 | Lamp aging test frame |
| CN211824965U (en) * | 2020-05-18 | 2020-10-30 | 上海飞博激光科技有限公司 | Multichannel fiber laser aging device |
| CN113866585A (en) * | 2020-06-30 | 2021-12-31 | 武汉普斯讯科技有限公司 | Miniature laser chip aging test system |
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