CN201226061Y - Acoustooptic modulator for high-power pulse optical fiber laser - Google Patents
Acoustooptic modulator for high-power pulse optical fiber laser Download PDFInfo
- Publication number
- CN201226061Y CN201226061Y CNU2008200671330U CN200820067133U CN201226061Y CN 201226061 Y CN201226061 Y CN 201226061Y CN U2008200671330 U CNU2008200671330 U CN U2008200671330U CN 200820067133 U CN200820067133 U CN 200820067133U CN 201226061 Y CN201226061 Y CN 201226061Y
- Authority
- CN
- China
- Prior art keywords
- optical fiber
- output
- acousto
- input
- fiber
- 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.)
- Expired - Lifetime
Links
Images
Abstract
The utility model relates to an acoustooptic modulator used for a large-power pulse fiber laser which includes an input tail fiber, a collimating lens, an acoustooptic apparatus, a focus lens and an output tail fiber; the input tail fiber is arranged in 3.7 degrees with the horizontal surface; the output tail fiber is arranged in 0 or 3.7 degrees with the horizontal surface; the input tail fiber and the collimating lens are arranged together for forming an input fiber collimator; the output tail fiber and the collimating lens are arranged together for forming an output fiber collimator; then the input fiber collimator and the output fiber collimator are assembled together with the acoustooptic apparatus as a whole body; a narrowband filter is arranged between the acoustooptic apparatus and the output fiber collimator; moreover, the input fiber collimator and the output fiber collimator are combined together for forming a fiber collimator; a narrowband high reflecting lens is added. The acoustooptic modulator effectively improves the mechanical stability of a laser system, can effectively inhibit the non-linearity effect in a doped fiber and realize the pulse laser output with large power and narrow spectral line through a method of coating films on different elements.
Description
Technical field
The utility model relates to the acousto-optic modulator that is used for high power pulse optical fiber.
Background technology
Q-switched double cladded fiber laser is because numerous advantages such as cheap, compact conformation, efficient height, line width, tunable wave lengths, in a lot of fields as extensive application such as remote sensing, range finding, medical treatment, military affairs, industrial processes, nonlinear optics application.
The method of generally using by doubly clad optical fiber acquisition highpowerpulse is that king oscillator provides " seed " pulse at present, being injected into doubly clad optical fiber amplification (MOPA) then obtains, seed oscillator (M0) often adopts mode-locked laser or tradition to transfer the solid state laser of Q [referring to first technology: CLE02002, CThX3,591].A kind of more simple method is directly to insert Q-switching device in the double-cladding fiber laser chamber, obtains high-peak power, high-octane laser pulse [referring to first technology: CLE02003,626].Though above-mentioned two kinds of methods all can obtain powerful pulse laser output, are difficult for realizing the full fiberize of laser instrument.
Be to realize the full fiberize of fiber laser, a kind of method is in the MOPA structure, adopts semiconductor laser modulation as M0, i.e. multi-stage fiber structure for amplifying [referring to first technology: Opt.Lett., 30 (24), 2005, P3299].The drawback of this method is that the seed source output power is little, needs to reach required power by multistage amplification, and before every grade of amplification fibre optic isolater need be arranged, and produces nonlinear effect easily in optical fiber, limited the further lifting of its output power, and cost is higher.Another kind method is to insert the Q-switching device of magnetic tape trailer fibre in the double-cladding fiber laser chamber, this method has also realized the full fiberize of laser instrument, make the structure of laser instrument more compact, but it easily brings when high-power and produces self-oscillatory new problem in the chamber, has also limited the further lifting of laser power.
Summary of the invention
The purpose of this utility model is to overcome the problems referred to above that prior art exists, and be provided for the acousto-optic modulator of high power pulse optical fiber, the fine input and output of acousto-optic modulator magnetic tape trailer of the present utility model can realize the full fiberize of fiber laser easily.The tail optical fiber end face is carried out respective handling, can suppress the self-sustained oscillation in the doped fiber, thereby realize powerful pulse laser output, and realize the laser output of narrow spectrum by the method for plated film on different elements.
The acousto-optic modulator that is used for high power pulse optical fiber of the present utility model, structure such as Fig. 1, Fig. 2 and shown in Figure 3.
The acousto-optic modulator that is used for highpowerpulse optical fiber, comprise input tail optical fiber 101, collimation lens 102, acousto-optical device 103, condenser lens 104 and output tail optical fiber 105, input tail optical fiber 101 becomes 3.7 ° of placements with surface level, output tail optical fiber 105 becomes 0 ° of placement with surface level, input tail optical fiber 101 and collimation lens 102 are installed together and constitute the input optical fibre collimating apparatus, output tail optical fiber 105 and condenser lens 104 are installed together and constitute the output optical fibre collimating apparatus, then with the input optical fibre collimating apparatus, output optical fibre collimating apparatus and acousto-optical device 103 assemblings as a whole 100, input tail optical fiber 101 and output tail optical fiber 105, its end is all molten to be had the optical fiber end cap and wears into oblique 8 ° of planes separately, and broad-band transparence-increased film is plated on the oblique 8 ° of planes at input tail optical fiber 101, and plates the arrowband transmission film on the oblique 8 ° plane of output tail optical fiber 105.As shown in Figure 1.
The another kind of structure of the utility model acousto-optic modulator as shown in Figure 2, input tail optical fiber 101 becomes 3.7 ° of placements with surface level, input tail optical fiber 101 and collimation lens 102 are installed together and constitute the input optical fibre collimating apparatus, input tail optical fiber 101 ends are all molten to have the optical fiber end cap also to wear into oblique 8 ° of planes separately and plate broad-band transparence-increased film on oblique 8 ° of planes, between the output optical fibre collimating apparatus of acousto-optical device 103 and output tail optical fiber 105 and condenser lens 104 formations, place a narrow band filter 106, and output tail optical fiber 105 becomes 3.7 ° of placements with surface level, the broad-band transparence-increased film of plating on oblique 8 ° of planes of output tail optical fiber 105, acousto-optical device 103 and narrow band filter 106 are installed together, and narrow band filter 106 becomes corresponding angle to place with the first-order diffraction direction of acousto-optical device 103, make 106 pairs of wavelength that set of narrow band filter have maximum transmitance, and can not reflect other wavelength light again and return acousto-optical device 103 and enter the input optical fibre collimating apparatus, then with the input optical fibre collimating apparatus, output optical fibre collimating apparatus and acousto-optical device 103 and narrow band filter 106 assemblings as a whole 100.
Another structure of the utility model acousto-optic modulator as shown in Figure 3, to import tail optical fiber, the output tail optical fiber is merged into tail optical fiber 301, remove condenser lens 104, increase an arrowband high reflection mirror 107, tail optical fiber 301 becomes 3.7 ° of placements with surface level, and be installed together the formation optical fiber collimator with collimation lens 102, tail optical fiber 301 ends are molten to be had the optical fiber end cap and wears into 8 ° of inclined-planes, and the inclined-plane is coated with broad-band transparence-increased film, acousto-optical device 103 and arrowband high reflection mirror 107 are installed together, and arrowband high reflection mirror 107 is vertical with the first-order diffraction light direction of process acousto-optical device 103, two parts is assembled as a whole 100 then.
Three kinds of acousto-optic modulator inside of the present utility model exempt to regulate, and have improved the mechanical stability of total system greatly.
Plate 1064 ± 0.5nm anti-reflection film on the 8 degree inclination angle faces of described output tail optical fiber 105, only for mixing the Yb fiber laser, can select the anti-reflection film of respective wavelength according to the operation wavelength of doped fiber, anti-reflection film is high saturating to 1064 ± 0.5nm laser, guarantee that this wavelength laser forms vibration output in the chamber, and the dip plane has bigger reflection loss to the light of its commplementary wave length, thereby presses the width of narrow laser instrument output spectral line.
Described narrow band filter 106 and acousto-optic modulator 103 angled placements, plating arrowband, surface transmission film, can select the arrowband transmission film of respective wavelength according to the operation wavelength of gain fibre, as to mixing the Yb fiber laser, plating 1064 ± 0.5nm arrowband transmission film, assurance sets wavelength laser and form vibration output in the chamber, and the dip plane has bigger reflection loss to the light of its commplementary wave length, thereby presses the width of narrow laser instrument output spectral line.
Plating arrowband, described arrowband high reflection mirror 107 surface high-reflecting film, can select the arrowband high-reflecting film of respective wavelength according to the operation wavelength of gain fibre, as for mixing the Yb fiber laser, plating 1064 ± 0.5nm arrowband high-reflecting film, first-order diffraction direction perpendicular to acousto-optical device is placed, assurance sets wavelength laser and form vibration output in the chamber, and the light of its commplementary wave length has bigger transmission loss, thereby presses the width of narrow laser instrument output spectral line.
The utility model is the fine input and output of magnetic tape trailer, easily realizes the acousto-optic modulator of full fiberize fiber laser, effectively improved the mechanical stability of laser system, can effectively suppress the nonlinear effect in the doped fiber, and realize pulse laser output high-power, narrow spectral line by the method for plated film on different elements.
Description of drawings
Fig. 1, Fig. 2 and Fig. 3 are the structural representation that is used for the acousto-optic modulator of high power pulse optical fiber of the present utility model.
Fig. 4 is the utility model embodiment synoptic diagram.
Fig. 5 be have or not demonstrate adopt acousto-optic modulator output spectrum of the present utility model and with the spectrum comparison diagram of the same power level that adopts the conventional acoustic photomodulator to be produced.
Embodiment
As shown in Figure 4, the 915nm pumping semiconductor laser 401 of magnetic tape trailer fibre is fused to the fiber grating 402 that is all-trans, the fiber grating that is all-trans is fused to gain fibre 403, gain fibre is fused to input tail optical fiber 404, the welding of input tail optical fiber has the optical fiber end cap, and wear into 8 ° of dip plane, plate broad-band transparence-increased film then, become 3.7 ° of placements with surface level, the laser that is produced by gain fibre forms a collimated light beam through input tail optical fiber 404 and collimation lens 405 and enters acousto-optical device 406, and the generation Bragg diffraction, the one-level light line focus lens 407 behind the diffraction are coupled into tail optical fiber 408.Output tail optical fiber 408 melts the optical fiber end cap is arranged, and wears into 8 ° of inclined-planes, plates the arrowband anti-reflection film, and becomes 0 ° of placement with surface level.Like this, just only allow the narrowband wavelength that sets in the first-order diffraction light to enter output tail optical fiber 408, and reflect other wavelength, other wavelength that are reflected can not enter the output tail optical fiber through acousto-optical device, output tail optical fiber 408 and 409 weldings of partial reflection fiber grating.Like this, fiber grating 402 and 409 forms a resonator cavity, because output tail optical fiber 408 and oblique 8 ° of faces plating arrowband anti-reflection film have so just suppressed the excitation of other wavelength, make the pulse optical fiber of such formation have narrow linewidth output, do not have the appearance of non-linear wavelength.We export average power with the 2W that this structure has obtained under the 20kHz frequency, and pulsewidth is 40ns, and peak power reaches 2.5kW.Fig. 5 demonstrates and adopts acousto-optic modulator output spectrum of the present utility model, and with the spectrum of the same power level that adopts the conventional acoustic photomodulator to be produced relatively, obvious spectral width and have the Raman wavelength.
If in like manner will be used for the pumping semiconductor laser as the acousto-optic modulator of Fig. 2, structure shown in Figure 3, effect is substantially the same.Here do not repeating.
Claims (3)
1, the acousto-optic modulator that is used for highpowerpulse optical fiber, comprise input tail optical fiber (101), collimation lens (102), acousto-optical device (103), condenser lens (104) and output tail optical fiber (105), the end of input tail optical fiber (101) and output tail optical fiber (105) is all molten to be had the optical fiber end cap and wears into oblique 8 ° of planes separately, and broad-band transparence-increased film is plated on the oblique 8 ° of planes at input tail optical fiber (101), input tail optical fiber (101) becomes 3.7 ° of placements with surface level, input tail optical fiber (101) and collimation lens (102) are installed together and constitute the input optical fibre collimating apparatus, output tail optical fiber (105) and condenser lens (104) are installed together and constitute the output optical fibre collimating apparatus, then with the input optical fibre collimating apparatus, output optical fibre collimating apparatus and acousto-optical device (103) assembling as a whole (100), it is characterized in that: output tail optical fiber (105) becomes 0 ° of placement with surface level, and plates the arrowband transmission film on oblique 8 ° of planes of output tail optical fiber (105).
2, the acousto-optic modulator that is used for highpowerpulse optical fiber according to claim 1, it is characterized in that: between the output optical fibre collimating apparatus of acousto-optical device (103) and output tail optical fiber (105) and condenser lens (104) formation, place a narrow band filter (106), and output tail optical fiber (105) becomes 3.7 ° of placements with surface level, the broad-band transparence-increased film of plating on oblique 8 ° of planes of output tail optical fiber (105), acousto-optical device (103) and narrow band filter (106) are installed together, and narrow band filter (106) becomes corresponding angle to place with the first-order diffraction direction of acousto-optical device (103), make narrow band filter (106) have maximum transmitance to the wavelength that sets, and can not reflect other wavelength light again and return acousto-optical device (103) and enter the input optical fibre collimating apparatus, then with the input optical fibre collimating apparatus, output optical fibre collimating apparatus and acousto-optical device (103) and narrow band filter (106) assembling as a whole (100).
3, the acousto-optic modulator that is used for highpowerpulse optical fiber according to claim 1, it is characterized in that: will import tail optical fiber, the output tail optical fiber is merged into tail optical fiber (301), remove condenser lens (104), increase an arrowband high reflection mirror (107), tail optical fiber (301) becomes 3.7 ° of placements with surface level, tail optical fiber (301) end is molten to be had the optical fiber end cap and wears into 8 ° of inclined-planes, and the inclined-plane is coated with broad-band transparence-increased film, and be installed together the formation optical fiber collimator with collimation lens (102), acousto-optical device (103) and arrowband high reflection mirror (107) are installed together, and arrowband high reflection mirror (107) assembles two parts as a whole (100) then with vertical through the first-order diffraction light direction of acousto-optical device (103).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200671330U CN201226061Y (en) | 2008-05-13 | 2008-05-13 | Acoustooptic modulator for high-power pulse optical fiber laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200671330U CN201226061Y (en) | 2008-05-13 | 2008-05-13 | Acoustooptic modulator for high-power pulse optical fiber laser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201226061Y true CN201226061Y (en) | 2009-04-22 |
Family
ID=40598957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200671330U Expired - Lifetime CN201226061Y (en) | 2008-05-13 | 2008-05-13 | Acoustooptic modulator for high-power pulse optical fiber laser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201226061Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102200652A (en) * | 2011-04-19 | 2011-09-28 | 中国科学院上海光学精密机械研究所 | Laser optical fibre frequency shifting device |
| CN102891430A (en) * | 2011-12-22 | 2013-01-23 | 清华大学 | Feedback suppression device for high-power laser output end surface of optical fiber |
| CN103078242A (en) * | 2013-01-28 | 2013-05-01 | 平湖中天合波通信科技有限公司 | High-power laser preventing laser chip from being damaged by backlights |
| CN103811989A (en) * | 2014-01-24 | 2014-05-21 | 深圳市创鑫激光技术有限公司 | Optical fiber coupling acousto-optic Q switch for high power pulse fiber laser |
| CN104409949A (en) * | 2014-11-05 | 2015-03-11 | 丹阳聚辰光电科技有限公司 | Ultra-short pulse fiber laser |
| CN106444100A (en) * | 2016-12-16 | 2017-02-22 | 中国电子科技集团公司第二十六研究所 | Integration optical fiber acousto-optic device |
-
2008
- 2008-05-13 CN CNU2008200671330U patent/CN201226061Y/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102200652A (en) * | 2011-04-19 | 2011-09-28 | 中国科学院上海光学精密机械研究所 | Laser optical fibre frequency shifting device |
| CN102200652B (en) * | 2011-04-19 | 2012-11-14 | 中国科学院上海光学精密机械研究所 | Laser optical fibre frequency shifting device |
| CN102891430A (en) * | 2011-12-22 | 2013-01-23 | 清华大学 | Feedback suppression device for high-power laser output end surface of optical fiber |
| CN102891430B (en) * | 2011-12-22 | 2015-08-12 | 清华大学 | Feedback suppression device for high-power laser output end surface of optical fiber |
| CN103078242A (en) * | 2013-01-28 | 2013-05-01 | 平湖中天合波通信科技有限公司 | High-power laser preventing laser chip from being damaged by backlights |
| CN103811989A (en) * | 2014-01-24 | 2014-05-21 | 深圳市创鑫激光技术有限公司 | Optical fiber coupling acousto-optic Q switch for high power pulse fiber laser |
| CN104409949A (en) * | 2014-11-05 | 2015-03-11 | 丹阳聚辰光电科技有限公司 | Ultra-short pulse fiber laser |
| CN106444100A (en) * | 2016-12-16 | 2017-02-22 | 中国电子科技集团公司第二十六研究所 | Integration optical fiber acousto-optic device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9450371B2 (en) | Mode-locked multi-mode fiber laser pulse source | |
| CN201226061Y (en) | Acoustooptic modulator for high-power pulse optical fiber laser | |
| CN107024816B (en) | High-order dispersion compensation chirp spectrum broadening system | |
| JP2013077831A (en) | Modular fiber-based chirped pulse amplification system | |
| US20170104308A1 (en) | Solid-state laser device based on a twisted-mode cavity and a volume grating | |
| CN1950979A (en) | Optical fiber laser using rare earth-added fiber and wide band light source | |
| CN103151684A (en) | Pulse pump type standing wave resonant cavity nanosecond pulse laser | |
| CN100589296C (en) | Acousto-optic modulator used for high power pulse optical fiber | |
| CN103401135B (en) | Adopt raman frequency conversion by the method for laser amplifier and device thereof | |
| CN103337785B (en) | Raman frequency conversion is adopted to produce method and the device thereof of wavelength Raman laser | |
| CN100588053C (en) | Picosecond impulse optical fiber laser | |
| CN104953457A (en) | Device for alternately outputting dual-wavelength Q-switched pulse lasers | |
| CN203014156U (en) | High-power high-efficiency super-continuous spectrum light source | |
| JPWO2006106669A1 (en) | Light source device | |
| CN103701020B (en) | Pulse-width-configurable Q-modulation pulse laser oscillator | |
| CN102738697B (en) | Realization method of 2.7 micron fiber laser and apparatus thereof | |
| CN109270614B (en) | Method for manufacturing cascade multi-type nonlinear effect suppression type inclined grating | |
| CN203056358U (en) | Pulse pumping type standing wave resonant cavity nanosecond pulse laser device | |
| US20230163553A1 (en) | Fiber laser system | |
| CN115173217A (en) | Semi-open-cavity type multiband random Raman fiber laser | |
| CN212485787U (en) | Near infrared fiber gas Raman laser oscillator | |
| CN100452575C (en) | Laser diode-pumped monolithic solid state laser device and method for application of said device | |
| CN208849224U (en) | THz high repetition frequency high power femto second optical fiber laser based on dispersive wave | |
| CN105390919A (en) | Method for obtaining high-repetition-frequency large-energy tunable laser | |
| CN2927420Y (en) | Double coating and frequency green-light optical-fiber laser in double-sided pump chamber |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20080513 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |