CN203690695U - Laser - Google Patents
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- CN203690695U CN203690695U CN201420054470.1U CN201420054470U CN203690695U CN 203690695 U CN203690695 U CN 203690695U CN 201420054470 U CN201420054470 U CN 201420054470U CN 203690695 U CN203690695 U CN 203690695U
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- laser
- maintaining optical
- polarization maintaining
- beam splitting
- polarization
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Abstract
The utility model provides a laser. The laser comprises at least a pump light emitting device, an optical fiber beam combiner, gain optical fibers, a first collimator, a mode locking device, a second collimator and an output mirror. In the laser, a first polarization beam splitting device is arranged between the first collimator and the mode locking device, a second polarization beam splitting device is arranged between the second collimator and the output mirror, the above adjacent optical devices are connected through polarization maintaining optical fibers. The laser with a structure of full polarization maintaining optical fibers has good stability. Linearly polarized light is transmitted through the polarization maintaining optical fibers, thus the optical path is prevented from influence of vibration caused by temperature change, and through the polarization beam splitting devices, the mode locking device can absorb part of the energy stably and reflects stable laser pulses after mode locking.
Description
Technical field
The utility model relates to a kind of laser, relates in particular to a kind of for exporting the fiber laser of mode-locked laser pulse.
Background technology
Fiber laser refers to the laser as gain media with doped rare earth element glass optical fiber, under the effect of pump light, in optical fiber, very easily form high power density, then cause the laser levels transition of working-laser material, more just can form laser generation output by resonant cavity.
Fiber laser range of application is very extensive, it has the advantages such as volume is little, lightweight, conversion efficiency is high, output beam quality is good, obtain in recent years fast development, especially have a wide range of applications in laser fiber communication, the long distance communication of laser space, industrial shipbuilding, automobile making, laser engraving, laser marking, laser cutting, printing roller processed, metal and nonmetal boring, cutting, welding, military and national defense safety, medicine equipment instrument and equipment, large foundation construction etc.
Existingly conventionally in resonant cavity, be provided with collimater and semiconductor saturable absorbing mirror (SESAM) for the laser of exporting mode-locked laser pulse, incide in semiconductor saturable absorbing mirror by collimater Output of laser.And the basic structure of semiconductor saturable absorbing mirror combines speculum and semiconductor saturable absorber exactly, by changing the thickness of absorber and the reflectivity of speculum, can regulate the modulation depth of absorber and the bandwidth of speculum, its locked mode principle is that pulse is while inciding semiconductor saturable absorbing mirror, because the front and back of pulse are low along intensity, cause absorbing unsaturated, most energy is absorbed, and the intensity of pulse center is large, so the energy of core is when being absorbed while reaching capacity state, most of energy is returned in resonant cavity.Visible, by semiconductor saturable absorbing mirror, the light intensity on the edge, front and back of laser pulse is absorbed, pulse duration is compressed in reflection process, thereby realizes the locked mode of laser pulse.
But, existing resonant cavity is by being by airspace, light path to be transmitted, the light being simultaneously input in collimater by gain fibre due to pump light is not the pulse polarised light that contains different polarization states conventionally, and then making collimater is the pulse polarised light of different polarization states to semiconductor saturable absorbing mirror output.Because semiconductor saturable absorbing mirror has saturated absorption in various degree to the pulsed light of different polarization states, cause semiconductor saturable absorbing mirror to occur absorption in various degree to the pulse polarised light of different polarization states, then be there is to loss in various degree in this pulsed light, make semiconductor saturable absorbing mirror export unsettled pulsed light.Meanwhile, existing laser mostly is and adopts airspace as laser propagation medium, is easily subject to the impact of the vibration that variations in temperature brings, and is easily subject to external environmental interference, and light loss is high, makes the unsettled pulse laser of Laser Output Beam quality.
Summary of the invention
Main purpose of the present utility model is to provide a kind of laser of exportable stabilized lasers pulse.
In order to realize main purpose of the present utility model, the utility model provides a kind of laser, it is disposed with at least one pump light emitter, optical-fiber bundling device, gain fibre, first collimator, clamping apparatus, the second collimater and outgoing mirror in the direction along light path, wherein, laser is provided with the first polarization beam splitting device between first collimator and clamping apparatus; Laser is also provided with the second polarization beam splitting device between the second collimater and outgoing mirror; Pump light emitter is connected in the first end of optical-fiber bundling device by the first polarization maintaining optical fibre; Gain fibre is polarization maintaining optical fibre, and optical-fiber bundling device is connected in the second end of first collimator by gain fibre; First collimator is connected in the first polarization beam splitting device by the second polarization maintaining optical fibre; The first polarization beam splitting device is connected in clamping apparatus by the 3rd polarization maintaining optical fibre; The first end of optical-fiber bundling device is connected in the second collimater by the 4th polarization maintaining optical fibre; The second collimater is connected in the second polarization beam splitting device by the 5th polarization maintaining optical fibre; The second polarization beam splitting device is connected in outgoing mirror by the 6th polarization maintaining optical fibre.
From such scheme, by the first polarization beam splitting device being arranged between first collimator and clamping apparatus, the light from first collimator incident is carried out to polarization beam splitting, incide clamping apparatus by the linearly polarized light that regulates polarization beam splitting device to realize slow axis transmission or fast axle transmission, this linearly polarized light has stable polarization state, so clamping apparatus can stably absorb and reflect the laser pulse after stable locked mode to its portion of energy, and between outgoing mirror and the second collimater, to be provided with the light that polarization beam splitting device makes output be equally that linearly polarized light and the light that reflexes in resonant cavity are linearly polarized light.Utilize polarization maintaining optical fibre to carry out each optics of connecting laser simultaneously, the laser of the structure by full polarization fibre has good stability, carry out transmission line polarised light by polarization maintaining optical fibre, make light path avoid being subject to the impact of the vibration that variations in temperature brings, and light loss is low, make optic path process stabilization efficient, do not allow to be subject to external environmental interference.
Further scheme is, laser also comprises for connecting the 7th polarization maintaining optical fibre between gain fibre and first collimator.
Therefore, by increase by one section of polarization maintaining optical fibre at gain fibre and first collimator, to be conducive to increase the chamber of laser long, by adopting the polarization maintaining optical fibre of different length to regulate the repetition rate of mode-locked laser, be conducive to improve the locked mode effect of laser pulse, make the laser pulse of its outputting high quality.
Further scheme is, gain fibre is connected by the mode of welding with the 7th polarization maintaining optical fibre.
Therefore, by the mode of welding, gain fibre is connected with polarization maintaining optical fibre, can effectively peel off remnant pump light, make the more stable laser pulse of laser output.
Further scheme is, gain fibre is that double clad is mixed thulium polarization maintaining optical fibre.
Therefore, adopt the rare element of high-dopant concentration in polarization maintaining optical fibre, and be conducive to make pump light can in gain fibre, better carry out transition, the then laser pulse of outputting high quality by doubly clad optical fiber.
Further scheme is, clamping apparatus is semiconductor saturable absorbing mirror.
Therefore, adopt the optics of semiconductor saturable absorbing mirror as passive mode locking, be conducive to simplify laser structure, improve output laser pulse quality.
Further scheme is, polarization beam splitting device is wollaston prism.
Therefore, adopt wollaston prism as polarization beam splitting device, because wollaston prism can be realized polarization beam splitting, degree of polarization is high, and wollaston prism is simple in structure, easy to process, can reduce costs.
Further scheme is, polarization beam splitting device is Rochon prism.
Therefore Rochon prism is similar to wollaston prism operation principle, have equally simple in structurely, easy to process, can reduce costs.
Further scheme is, the ratio between transmitted light and the reverberation of outgoing mirror is one to nine.
Therefore, by the pulsed laser energy of incident outgoing mirror be divided into 10% energy outwards output and 90% energy inwardly reflection carry out resonance again, be conducive to the lasting high-quality laser pulse of stable output of laser.
Further scheme is, the quantity of pump light emitter is two, and each pump light emitter is all connected in the first end of optical-fiber bundling device by the first polarization maintaining optical fibre.
Therefore, in the time that the luminous power of pumping source transmitting is inadequate, can adopts and increase multiple pumping sources, and be connected between newly-increased pumping source and optical-fiber bundling device by polarization maintaining optical fibre, can improve the applicability of laser by the expansion of different pumping sources.
Further scheme is, laser also comprises power amplifier, and power amplifier is for receiving the laser of outgoing mirror output.
Therefore, can also set up power amplifier in the rear class of outgoing mirror the laser pulse of outgoing mirror output is amplified, be conducive to further improve the luminous power of laser output laser pulse.
Brief description of the drawings
Fig. 1 is that the utility model laser real first is executed routine structure chart.
Fig. 2 is the structure chart of the utility model laser the second embodiment intermediate power amplifier.
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Embodiment
The first embodiment:
With reference to Fig. 1, Fig. 1 is the structure chart of the utility model laser 1.Laser 1 is disposed with pump light emitter 111, pump light emitter 112, optical-fiber bundling device 12, gain fibre 13, polarization maintaining optical fibre 14, resonant cavity 15 and output cavity 16 in the direction along its light path, wherein, resonant cavity 15 is being disposed with collimater 151, polarization beam splitting device 152 and clamping apparatus 153 along the direction of light path, output cavity 16 is being disposed with collimater 161, polarization beam splitting device 162 and outgoing mirror 163 along the direction of light path.Preferably, gain fibre 13 is mixed thulium polarization maintaining optical fibre for double clad, and clamping apparatus 153 is semiconductor saturable absorbing mirror, and polarization beam splitting device 152 and polarization beam splitting device 162 are wollaston prism or Rochon prism.
In the time that laser 1 is worked, pump light emitter 111 is launched pump light to optical-fiber bundling device 12, and optical-fiber bundling device 12 can transmit the pump light of incident in optical fiber, and this pump light is incided in gain fibre 13.When pump light is propagated in double clad is mixed the gain fibre 13 of thulium, because the energy of pump light can not direct-coupling all in the fibre core of optical fiber, but pump light is coupled in the inner cladding of gain fibre, pump light carrys out back reflective between inner cladding and surrounding layer, and repeatedly pass fiber core with single-mold and absorbed by this fibre core, thereby in fibre core, form laser pulse output, so the energy of pump light can be realized transition and indirectly be coupled in fibre core outside the formal output with laser pulse arrives at gain fibre 13.
The second embodiment:
The laser 1 that the present embodiment has has power amplifier, and power amplifier is positioned at the output rear class of the outgoing mirror 163 of the laser 1 of the first embodiment.
With reference to Fig. 2, Fig. 2 is the structure chart of the power amplifier of laser 1, and power amplifier is disposed with and comprises isolator 21, mould field adapter 22, pump light emitter 231, pump light emitter 232, optical-fiber bundling device 24, gain fibre 25, covering power stripper 26, collimater 27 in the direction along its light path.
Collimater 163, isolator 21, mould field adapter 22, pump light emitter 231, pump light emitter 232, optical-fiber bundling device 24, gain fibre 25, covering power stripper 26 and collimater 27 all adopt polarization maintaining optical fibre to be connected each other.
After exporting the laser pulse after locked mode, collimater 163 incides after isolator 21, because isolator 21 has the catoptrical function of blocking-up, so blocking effectively, isolator reflects the light that enters into output cavity 16 or resonant cavity 15, to improve the stability of laser output laser pulse.Receive after the laser pulse that isolator 21 exports with rear mold field adapter 22, by mould field adapter 22, the laser pulse of incident widened and mated output, this laser pulse can be transmitted with luminous power to greatest extent in polarization maintaining optical fibre.
Optical-fiber bundling device 24 receives the pulse laser after widening and mating that pump light that pump light emitter 231 exports and mould field adapter 22 are exported, optical-fiber bundling device 24 is input to the laser receiving in gain fibre 25 subsequently, gain fibre 25 carries out being fused to fibre core after transition gain to the pump light of incident and propagates subsequently, by pump light emitter 231 and gain fibre 24, the laser pulse power of output is further increased.Then being entered in covering power stripper 26, covering power stripper 26 is peeled off remnant pump light further to improve the quality of laser pulse to the laser of incident.Last covering power stripper 26 in collimater 27, outputs to outer for user of service by Output of laser after collimater 27 is further adjusted collimation.
From such scheme, to carry out polarization beam splitting from the light of collimater 151 incidents by the polarization beam splitting device 152 being arranged between collimater 151 and clamping apparatus 153, incide clamping apparatus 153 by the linearly polarized light that regulates polarization beam splitting device 151 to realize slow axis transmission or fast axle transmission, make clamping apparatus 153 stably to absorb and to reflect the laser pulse after stable locked mode to its portion of energy, and between outgoing mirror 163 and collimater 161, to be provided with the light that polarization beam splitting device 162 makes output be equally that linearly polarized light and the light that reflexes in resonant cavity are linearly polarized light.
Simultaneously, the utility model utilizes polarization maintaining optical fibre to carry out each optics of connecting laser, the laser of the structure by full polarization fibre has good stability, carry out transmission line polarised light by polarization maintaining optical fibre, make light path avoid being subject to the impact of the vibration that variations in temperature brings, and light loss is low, make optic path process stabilization efficient, do not allow to be subject to external environmental interference.
In the time that laser output power is not enough, can also open pump light emitter 111 and pump light emitter 112 makes them simultaneously to optical-fiber bundling device output pump light simultaneously, make the more high-power laser of laser output, and can also open pump light emitter 231 and pump light emitter 232 simultaneously and make them simultaneously to optical-fiber bundling device output pump light, also can make the more high-power laser pulse of laser output.
Claims (10)
1. laser, it is disposed with at least one pump light emitter, optical-fiber bundling device, gain fibre, first collimator, clamping apparatus, the second collimater and outgoing mirror in the direction along light path;
It is characterized in that:
Described laser is provided with the first polarization beam splitting device between described first collimator and described clamping apparatus;
Described laser is also provided with the second polarization beam splitting device between described the second collimater and described outgoing mirror;
Described pump light emitter is connected in the first end of described optical-fiber bundling device by the first polarization maintaining optical fibre;
Described gain fibre is polarization maintaining optical fibre, and the second end of described optical-fiber bundling device is connected in described first collimator by described gain fibre;
Described first collimator is connected in described the first polarization beam splitting device by the second polarization maintaining optical fibre;
Described the first polarization beam splitting device is connected in described clamping apparatus by the 3rd polarization maintaining optical fibre;
The first end of described optical-fiber bundling device is connected in described the second collimater by the 4th polarization maintaining optical fibre;
Described the second collimater is connected in described the second polarization beam splitting device by the 5th polarization maintaining optical fibre;
Described the second polarization beam splitting device is connected in described outgoing mirror by the 6th polarization maintaining optical fibre.
2. laser according to claim 1, is characterized in that:
Described laser also comprises for connecting the 7th polarization maintaining optical fibre between described gain fibre and first collimator.
3. laser according to claim 2, is characterized in that:
Described gain fibre is connected by the mode of welding with described the 7th polarization maintaining optical fibre.
4. laser according to claim 3, is characterized in that:
Described gain fibre is that double clad is mixed thulium polarization maintaining optical fibre.
5. laser according to claim 1, is characterized in that:
Described clamping apparatus is semiconductor saturable absorbing mirror.
6. laser according to claim 1, is characterized in that:
Described polarization beam splitting device is wollaston prism.
7. laser according to claim 1, is characterized in that:
Described polarization beam splitting device is Rochon prism.
8. laser according to claim 1, is characterized in that:
Ratio between transmitted light and the reverberation of described outgoing mirror is one to nine.
9. according to the laser described in claim 1 to 8 any one, it is characterized in that:
The quantity of described pump light emitter is two, and described in each, pump light emitter is all connected in the first end of described optical-fiber bundling device by described the first polarization maintaining optical fibre.
10. according to the laser described in claim 1 to 8 any one, it is characterized in that:
Described laser also comprises power amplifier, and described power amplifier is for receiving the laser of described outgoing mirror output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420054470.1U CN203690695U (en) | 2014-01-27 | 2014-01-27 | Laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420054470.1U CN203690695U (en) | 2014-01-27 | 2014-01-27 | Laser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203690695U true CN203690695U (en) | 2014-07-02 |
Family
ID=51012564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420054470.1U Withdrawn - After Issue CN203690695U (en) | 2014-01-27 | 2014-01-27 | Laser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203690695U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103746282A (en) * | 2014-01-27 | 2014-04-23 | 光库通讯(珠海)有限公司 | Laser |
-
2014
- 2014-01-27 CN CN201420054470.1U patent/CN203690695U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103746282A (en) * | 2014-01-27 | 2014-04-23 | 光库通讯(珠海)有限公司 | Laser |
| CN103746282B (en) * | 2014-01-27 | 2017-02-15 | 珠海光库科技股份有限公司 | Laser |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: ZHUHAI AFR TECHNOLOGY CO., LTD. Free format text: FORMER NAME: ADVANCED FIBER RESOURCE (ZHUHAI) CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 519030 Guangdong city of Zhuhai Province Tang software Road No. B5 Building 2 floor Patentee after: ADVANCED FIBER RESOURCES (ZHUHAI) LTD. Address before: 519030 Guangdong city of Zhuhai Province Tang software Road No. B5 Building 2 floor Patentee before: Advanced Fiber Resources (Zhuhai) Ltd. |
|
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 519030, 1, 1-6, 8 and two, 5 production center, software Road, Guangdong, Zhuhai, China Patentee after: ADVANCED FIBER RESOURCES (ZHUHAI) LTD. Address before: 519030 Guangdong city of Zhuhai Province Tang software Road No. B5 Building 2 floor Patentee before: ADVANCED FIBER RESOURCES (ZHUHAI) LTD. |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140702 Effective date of abandoning: 20170215 |