CN202837616U - Structure capable of coupling beams of two semiconductor lasers - Google Patents
Structure capable of coupling beams of two semiconductor lasers Download PDFInfo
- Publication number
- CN202837616U CN202837616U CN 201220367051 CN201220367051U CN202837616U CN 202837616 U CN202837616 U CN 202837616U CN 201220367051 CN201220367051 CN 201220367051 CN 201220367051 U CN201220367051 U CN 201220367051U CN 202837616 U CN202837616 U CN 202837616U
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- optical fiber
- lens
- laser instrument
- sleeve
- light
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- 239000013307 optical fiber Substances 0.000 claims abstract description 62
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- 239000003292 glue Substances 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 2
- 238000004806 packaging method and process Methods 0.000 abstract 1
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- Optical Couplings Of Light Guides (AREA)
Abstract
The utility model relates to a structure capable of coupling beams of two semiconductor lasers, so that lights emitted by the two semiconductor lasers can be coupled into one optical fiber. Light beams emitted by two semiconductor laser chips are respectively collimated at the fast axis direction through respective fast axis collimation cylinder lenses, wherein the laser chips are arranged by a way in which junction planes of the lasers are perpendicular to a base plate; and then the light beam of one laser is directly irradiated on a lens-optical fiber assembly and the light beam of the other laser is reflected by a reflector and then is irradiated on the lens-optical fiber assembly, wherein the two light beams are arranged closely; and after being focused, the two light beams are coupled to a single optical fiber for outputting. Besides, the lens-optical fiber assembly is directly welded to a pipe orifice of a packaging tube shell by solders. With utilization of the above-mentioned structure, the light beams of the two lasers can be outputted from one optical fiber. The provided structure can be applied to a wide range of applications like the industry and the medial field and is especially suitable for an occasion on which the invisible light is used as a working light source and the visual light is used as the indication light.
Description
Affiliated technical field
The utility model provides the structure of two semiconductor laser beams of a kind of coupling, the output of two semiconductor lasers can be coupled light in the optical fiber by this structure, belongs to laser and the semiconductor laser field of using.
Background technology
In industry, medical science and scientific research field, use widely the infrared lasers such as 808nm, 980nm, 1064nm as work light.These light belong to invisible light, but need to know travel path and the irradiation position of these work light in the middle of using in a lot of situations, and this does indication, guiding with regard to the light that needs visible wavelength.
Conventional solution is to use in light path the double color plate of a wavelength reflection to another wavelength transmission, two bundle laser are closed bundle, and be coupled in the optical fiber by focusing on coupled lens, realize having obtained from an optical fiber output of two wavelength, for example No. 200820180756.9 patents.If but two wavelength ratio near the time, require the edge of reflectance curve of double color plate very steep, the difficulty of such plated film designing and making is very large, reflectivity and transmissivity can be too not high, cause closing the beam power loss large.Further, to the two-beam of identical wavelength, just can not obtain to close with the method for double color plate the purpose of bundle.Need better scheme to improve.
Summary of the invention
The utility model has solved the problem that the output of two semiconductor lasers is coupled to single optical fiber.Principle and complete structure are seen respectively Fig. 1 and Fig. 3.
The light beam that two chip of laser send is at first collimated at quick shaft direction by the fast axis collimation post lens 5.1 and 5.2 of installing respectively in the place ahead separately, and the light beam 16.1 behind the collimation and 16.2 is with fan-shaped outgoing.Laser instrument 1 and the parallel placement of lens-optical fiber component 6 optical axises, its light beam 16.1 through fast axis collimation directly shines parallel with it to lens-optical fiber component 6 and optical axis.Laser instrument 2 and laser instrument 1 angled placement, its light beam through fast axis collimation shines to lens-optical fiber component 6 through the reflection of a catoptron 7, and the beam optical axis after the reflection is parallel with the optical axis of lens-optical fiber component 6.
Being used for the catoptron 7 of reflection laser 2 light beams 16.2 is installed between laser instrument 1 and the lens-optical fiber component 6, a limit of catoptron near but do not block the fan beam 16.1 of laser instrument 1, the light beam 16.22 of the laser instrument 2 after catoptron 7 reflections is near the light beam 16.1 of first laser instrument and in parallel.Two bundles light beam 16.22 and 16.1 scioptics-optical fiber component 6 arranged side by side is coupled to optical fiber.
Lens-optical fiber component 6 its outsides are the sleeve 9 of a circle, and lens 8 are fixed on the end in the sleeve 9, and optical fiber contact pins 10 inserts sleeve 9 from the other end, and the distance between optical fiber contact pins 10 and the lens 8 fixes with a locating ring 11.See Fig. 1 and 2.Lens-optical fiber component 6 can be used as a regulon, and by position, the angular setting of multidimensional, the light beam arranged side by side of two laser instruments is coupled in the optical fiber by lens focus.Lens 8 and optical fiber contact pins 10 are realized coaxial by sleeve and locating ring and the location.
Make a round fiber fairlead 14 that is used for drawing optical fiber on the sidewall 13 of shell, there is an opening 15 top of pipe.Carry out the coupling position adjustment in lens-optical fiber component 6 Inserting Tubes 14.Manage 14 internal diameters greater than the external diameter of sleeve 9, make sleeve 9 in pipe 14, sufficient adjustment space be arranged.After adjusting to the optimum coupling state, be fixed in the optical fiber fairlead 14 in the scolder ascending pipe lens-optical fiber component 6 being welded by opening 15, or inject from opening with glue lens-optical fiber component 6 is fixed in the pipe 14.Such fixed form does not need extra support component, simple and reliable process.See Fig. 3.
When one of needs work laser, during a pilot light, work laser can be placed on the position of laser instrument 1, normally several mW power of pilot light laser magnitude, can be put into the position of laser instrument 2.
Description of drawings
Fig. 1 is for advancing the light beam coupling of two semiconductor lasers the principle schematic of optical fiber.
Fig. 2 is lens-optical fiber component cut-open view, between lens and the sleeve locating ring is arranged.
Fig. 3 is the side view that laser instrument and lens-optical fiber component all are in place, and has shown mode that optical fiber is drawn and the fixed form of lens-optical fiber component.
Embodiment
A kind of one-piece construction of embodiment is seen Fig. 3.The below describes the making flow process of total in detail.
At the light direction of laser instrument 1 and 2 the fast axis collimation cylindrical mirror is installed first, is become laser beam compression fan-shaped and the face outgoing of vertical laser chamber, shown in 16.1 and 16.2.
If the external diameter of lens 8 is different from the internal diameter of sleeve 9, then as shown in Figure 2, need an adaptation ring 16, as the intermediary between lens 8 and the sleeve 9, the machining precision of adaptation ring 16 must guarantee to make lens 8 and optical fiber contact pins coaxial.Fig. 2 has shown that also lens 8 adopt the situation of GRIN Lens.
Catoptron 7 is installed.Catoptron 7 is connected one 5 dimension device for precisely regulating to be regulated.Add electric current to laser instrument 1 and 2 during adjusting, 20～30 centimeters are put a screen outside 14 mouthfuls of optical fiber fairleads, by observing 16.22 dozens of hot spots on screen of light beam 16.1 and folded light beam, adjust position and the angle of catoptron, make light beam 16.22 and light beam 16.1 parallel and press close to.Catoptron 7 usefulness glue are fixed on the base plate 4.
Coupling is regulated.Shell bottom plate 4 is installed on the micromatic setting, and the tail end with contact pin 10 also is clamped on the micromatic setting simultaneously, and lens-optical fiber component 6 stretches in the shell by the optical fiber fairlead 14 on the shell sidewall, aims at laser instrument 1, optical fiber other end alignment light power meter.Add electric current for laser instrument 1, measure from the luminous power of optical fiber output, repeatedly regulate, make the luminous power of optical fiber output maximum.Add electric current for again laser instrument 2, in the constant situation of the electric current that keeps laser instrument 1 and output power, make the optical fiber Output optical power of laser instrument 2 maximum.
The scolder that melts in opening 15 injection fibre fairleads 14, is welded sleeve 9 in pipe, or inject opening with glue sleeve 9 is cemented.Optical fiber fairlead 14 internal diameters are more slightly bigger than the external diameter of sleeve 9, can not be too little can not be too large, otherwise scolder can be difficult to fill up the slit between the two, the cavity occurs, and weld strength and long-term stable operation are brought negative effect.
Claims (7)
1. the be coupled structure of two semiconductor laser beams is characterized by: two semiconductor laser chips are installed on separately heat sink, heat sinkly are installed on the base plate with the direction of laser instrument PN junction plane perpendicular to the bottom surface; First laser instrument and lens-parallel placement of optical fiber component optical axis, second laser instrument and the angled placement of first laser instrument, its optical axis was parallel with lens-optical fiber component optical axis after the light beam of second laser instrument passed through a catoptron, and the light beam scioptics-optical fiber component of two laser instruments is coupled to optical fiber; Lens-optical fiber component is by being welded or glue is fixed in the mouth of pipe on the shell sidewall.
2. the structure of two semiconductor laser beams of coupling according to claim 1, it is characterized by: two laser instruments have all been installed fast axis collimation lens.
3. the structure of two semiconductor laser beams of coupling according to claim 1, it is characterized by: one side of catoptron near but do not block the light beam of first laser instrument, the light beam of second laser instrument after mirror reflects is near the light beam of first laser instrument and in parallel.
4. the structure of two semiconductor laser beams of coupling according to claim 1, it is characterized by: the outside of lens-optical fiber component is the sleeve of a circle, lens are fixed on an end of sleeve, optical fiber contact pins inserts sleeve from the other end, and the distance between optical fiber contact pins and the lens is fixed with a locating ring.
5. the structure of two semiconductor laser beams of coupling according to claim 1, it is characterized by: the lens in lens-optical fiber component are sphere, aspheric surface or GRIN Lens, or the combination of these lens.
6. the structure of two semiconductor laser beams of coupling according to claim 1, it is characterized by: the sleeve in lens-optical fiber component is that cross sectional shape is circular cylinder, or the barrel cross section of opening vertically groove is the opening cylinder of " C " shape, made by metal or stupalith.
7. the structure of two semiconductor laser beams of coupling according to claim 1 is characterized by: the optical fiber fairlead is arranged on the shell wall, and the pipe upper opening, sleeve is welded to be fixed in the mouth of pipe, or with glue sleeve is fixed in the mouth of pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220367051 CN202837616U (en) | 2012-07-27 | 2012-07-27 | Structure capable of coupling beams of two semiconductor lasers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220367051 CN202837616U (en) | 2012-07-27 | 2012-07-27 | Structure capable of coupling beams of two semiconductor lasers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202837616U true CN202837616U (en) | 2013-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220367051 Expired - Lifetime CN202837616U (en) | 2012-07-27 | 2012-07-27 | Structure capable of coupling beams of two semiconductor lasers |
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| Country | Link |
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| CN (1) | CN202837616U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107678104A (en) * | 2016-08-02 | 2018-02-09 | 南京理工大学 | A kind of indication laser coupling device and its method of adjustment |
| CN108092130A (en) * | 2017-12-25 | 2018-05-29 | 北京凯普林光电科技股份有限公司 | A kind of capsulation structure for semiconductor laser |
-
2012
- 2012-07-27 CN CN 201220367051 patent/CN202837616U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107678104A (en) * | 2016-08-02 | 2018-02-09 | 南京理工大学 | A kind of indication laser coupling device and its method of adjustment |
| CN108092130A (en) * | 2017-12-25 | 2018-05-29 | 北京凯普林光电科技股份有限公司 | A kind of capsulation structure for semiconductor laser |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130327 |
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| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Zhu Xiaopeng Document name: Notice of Patent Expiration and Termination |