CN200965576Y

CN200965576Y - Optical fiber coupling position and clamping device in the laser cavity

Info

Publication number: CN200965576Y
Application number: CN 200620028519
Authority: CN
Inventors: 彭忠琦; 薛松
Original assignee: Changchun Institute of Optics Fine Mechanics and Physics of CAS
Current assignee: Changchun Institute of Optics Fine Mechanics and Physics of CAS
Priority date: 2006-03-31
Filing date: 2006-03-31
Publication date: 2007-10-24
Anticipated expiration: 2016-03-31

Abstract

The utility model relates to a fiber coupling orientation in laser instrument cavity and a clamping device, in particular to a thin fiber coupling orientation of a glass groundmass and an improvement of the clamping device. The utility model comprises a steel sleeve, an axial guiding key, an axial moving seat, a horizontal moving block, an axial locking nut, an adjusting screw cap, a compressing spring, a fiber seat axial rotating resistance key, a decorating cap, a radial jacket, a fiber seat, an optics four dimensional adjusting bracket, a fiber fixing press plate, a fiber, a magnetic ring, a reflecting circle ring and a bolt. The pressing plate manner is adopted by the utility model, making the relative position in the laser cavity of the fiber in the fiber seat meets the term of six dimensional orientations and fixed tightly, making out the fiber coupling orientation in laser instrument cavity and the clamping device. The utility model has the advantages of convenient installation, simple operation and good stability, which has small wastage for the laser output power, and can be applicable to the laser instrument and all sorts of medical laser instruments.

Description

Laser cavity inner fiber coupling location and clamping device

Technical field

The utility model belongs to laser technology field, relates to a kind of laser cavity inner fiber coupling location and clamping device; Especially relate to a kind of glass basis less than the thin optic fibre coupling location of 1mm and the improvement of clamping device.

Background technology

In laser cavity inner fiber coupling location and clamping, all adopted a. volute spring folder in the past; B. the thread taper voussoir presss from both sides; The device that c cylinder fluting spring leaf compresses.After adopting a. volute spring folder optical fiber coupling location, often make the damage of optical fiber vitreum outer layer plastic diaphragm during locking, laser by the time make optical fiber burn black even fracture.Adopt b thread taper voussoir folder because difficult cooperates with the taper voussoir very tight of optical fiber external diameter, thus fiber orientation when being subjected to the external force effect after locking the optical fiber Coupling point change, influence laser and export.C cylinder fluting spring leaf is on cylinder, and processing is dark, long stria, and technology is poor, and the reed processing technology is also poor, is difficult to be applied in the product of laser instrument.

Summary of the invention

In order to overcome the shortcoming of three kinds of locating devices in the background technology, the utility model provides a kind of laser cavity inner fiber coupling location and clamping device, the mode that adopts presser type to tighten up has realized accurately location of the sextuple direction (XYZ three directions move and rotate) of optical fiber in laser cavity.

Detailed content of the present utility model: it comprises steel bushing, axially directed key, moves axially seat, horizontal shift piece, axial locking nut, regulate nut, stage clip, the axial anti-rotation key of fiber bench, modify cap, radial jacket, fiber bench, the four-dimensional adjusting bracket of optics, optical fiber fixation clip (oneself is rare for poly-tetrafluoro), optical fiber, magnet ring (2000 Gauss), reflection annulus, screw.

Its static structure and mutual relationship characteristics are: on fiber bench, have one with optical fiber vitreum same diameter cooperate aperture (long 5mm make optical fiber radially with fiber bench location).Along on the fiber bench cylinder axis; process semicircle groove (long 45mm is the radius of plastic protective film for plastics deeply) with optical fiber vitreum outer layer plastic diaphragm same diameter; and on the parallel plane at fiber bench cylinder axis place, be provided with silk hole with optical fiber fixation clip same holes distance.This installs, and mutual relationship is between each part: at first will reflect annulus and steel bushing at its male half coupling place gummed.Magnet ring and fiber bench are at its male half coupling place gummed.And, be installed in the keyway of fiber bench the axial anti-rotation key of fiber bench.Axially directed key is cooperated with keyhole on the horizontal shift piece, and will move axially seat and be mated, afterwards with stage clip, regulate nut and pack into successively and move axially in the seat, on the four-dimensional adjusting bracket of the optics of then it together being packed into, and use axial locking nut lock.To reflect annulus again and the steel bushing subassembly bonds to position shown in Figure 1, as the axial location part.Optical fiber is packed into before the fiber bench, and it is long to remove about 100mm to optical fiber outermost layer plastics, optical fiber second layer diaphragm removes about 20mm grow after, along fiber bench one end (packing into) optical fiber is packed into from macropore one side.And make it long from cooperating aperture to stretch out 15mm, it is long radially to cut 5mm with optical fiber cutter along optical fiber again, makes the residue end face form optical flat.Make optical fiber expose fiber bench 3-5mmc length afterwards, again the optical fiber fixation clip is packed into, use screw in compression optical fiber; Subsequently radial jacket and modification cap are assembled on the fiber bench.

Dynamic annexation of the present utility model; For coupled fiber is accurately located, adopt on the fiber bench aperture and cooperate external diameter (cylinder that matches with optics four-dimension adjusting bracket) coaxial.Annexation is at first optical fiber and fiber bench together to be moved seat one end vertically to cooperate insertion with keyway, makes the little gap (± 0 in fiber bench external diameter and this aperture.01) cooperation has realized five dimension directions location; Another axial location is to rely on reflection annulus and the steel bushing subassembly and magnet ring (2000 Gauss) adhesive that is bonded on the fiber bench that is installed on the horizontal shift piece.Realized accurately location of (6 DOF) of optical fiber in laser cavity.

Advantage of the present utility model: it is big to adopt presser type to tighten up with the optical fiber surface of contact, and snap-in force is even; Optical fiber is not easy the moving and damage of string.Thereby a kind of new equipment of laser cavity inner fiber coupling location and clamping is provided, and the utility model location has overcome the deficiency of existing clamping device.Therefore adopt the new equipment of presser type to replace existing clamping device, debug conveniently; Simple to operate; Good stability; Little to the laser output power loss.This device is applicable to the coupling of the optical fiber in laser device location and clamping.

Description of drawings

Fig. 1 is a front view of the present utility model,

Fig. 2 is a right view of the present utility model,

Fig. 3 is a left view of the present utility model,

Among the figure: steel bushing 1, axially directed key 2, move axially seat 3, horizontal shift piece 4, axial locking nut 5, regulate nut 6, stage clip 7, the axial anti-rotation key 8 of fiber bench, modify cap 9, radial jacket 10, fiber bench 11, the four-dimensional adjusting bracket 12 of optics, optical fiber fixation clip 13 (oneself is rare for poly-tetrafluoro), optical fiber 14, magnet ring 15 (2000 Gauss), reflection annulus 16, screw 17.

Embodiment

Embodiment of the present utility model: as Fig. 1, Fig. 2, shown in Figure 3, the processing and the installation steps of this device are: outside laser cavity the optical fiber on the fiber bench 11 14 is together moved seat 3 keyways vertically and cooperate the insertion location.Regulate four-dimensional adjusting bracket 12 of optics and horizontal shift piece 4 repeatedly and move axially seat 3, make the coupling of optical fiber and endovenous laser best, make the output of laser high-level efficiency.After the each treatment of laser device, optical fiber will take off from instrument, installs when re-using.This device can both guarantee that the sextuple direction of optical fiber in laser cavity accurately locate in this process; Optical fiber and endovenous laser coupling the best make laser power stability output.No. 45 steels of steel bushing 1 and horizontal shift piece 4 usefulness are done; Stage clip 7 usefulness carbon spring steel wiress are made; The own rare making of the poly-tetrafluoro of optical fiber fixation clip 13 usefulness; Magnet ring 15 usefulness magnetic materials are made; Moving axially seat 3, axial locking nut 5, adjusting nut 6, modifying cap 9, radial jacket 10, fiber bench 11 and reflecting annulus 16 all uses aluminium alloy (2A12) to make; Axially directed key 2, the axial anti-rotation key 8 of fiber bench, the four-dimensional adjusting bracket 12 of optics, optical fiber 14, screw 17 outsourcings.

Claims

1, a kind of laser cavity inner fiber coupling location and clamping device; It comprises steel bushing (1), axially directed key (2), move axially seat (3), a horizontal shift piece (4), axial locking nut (5), regulate nut (6), stage clip (7), the axial anti-rotation key of fiber bench (8), modify cap (9), radial jacket (10), fiber bench (11), the four-dimensional adjusting bracket (12) of optics, optical fiber fixation clip (13), optical fiber (14), magnet ring (15), reflection annulus (16), screw (17); It is characterized in that: the mode that adopts presser type to tighten up, realized that the sextuple direction of optical fiber in laser cavity accurately locate;

Its static structure and mutual relationship characteristics are:

On fiber bench (11), be provided with the optical fiber that can make and radially going up the aperture of locating with fiber bench (11) with optical fiber vitreum same diameter; Along on fiber bench (11) cylinder axis, process the semicircle groove with optical fiber vitreum outer layer plastic diaphragm same diameter, and on the parallel plane at fiber bench cylinder axis place, be provided with silk hole with optical fiber fixation clip (13) same holes distance; The axial anti-rotation key of fiber bench (8) is installed in the keyway of fiber bench (11); Axially directed key (2) and horizontal shift piece (4) are gone up keyhole cooperates, and will move axially (3) and be mated; Afterwards with stage clip (7), regulate nut (6) and pack into successively and move axially in the seat (3), on the four-dimensional adjusting bracket of optics (12) of then it together being packed into, and lock with axial locking nut (5); To reflect annulus (16) earlier glues together at its male half coupling place with steel bushing (1); Magnet ring (15) glues together at its male half coupling place with fiber bench (11), and it is bonding with the steel bushing subassembly to reflect annulus (16) again, as the axial location part; Optical fiber (14) is packed into after the fiber bench (11), again optical fiber fixation clip (13) is packed into, with screw (17) pressed fiber, subsequently with radial jacket (10) and modify cap (9) and be assembled on the fiber bench (11).

2, according to described a kind of laser cavity inner fiber coupling location of claim 1 and clamping device, it is characterized in that optical fiber (14) and fiber bench (11) are together moved seat (3) one ends vertically cooperates insertion with keyway, make fiber bench (11) external diameter cooperate with little gap, this aperture (± 0.01) and realized five dimension direction location; Another axial location is to rely on the reflection annulus (16) and steel bushing (1) subassembly and magnet ring (15) adhesive that is bonded on the fiber bench (11) that is installed on the horizontal shift piece (4), and promptly the sextuple direction of optical fiber in laser cavity accurately located.