CN1275363C - Ultrashort pulse laser time self-adapting synchronization method and apparatus therefor - Google Patents
Ultrashort pulse laser time self-adapting synchronization method and apparatus therefor Download PDFInfo
- Publication number
- CN1275363C CN1275363C CN 200310118505 CN200310118505A CN1275363C CN 1275363 C CN1275363 C CN 1275363C CN 200310118505 CN200310118505 CN 200310118505 CN 200310118505 A CN200310118505 A CN 200310118505A CN 1275363 C CN1275363 C CN 1275363C
- Authority
- CN
- China
- Prior art keywords
- laser
- pulse
- ultra
- flashlight
- short pulse
- 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 - Fee Related
Links
Images
Abstract
The present invention discloses an ultra-short pulse laser time self-adapting synchronization method and a device thereof. The laser of an ultra-short pulse laser is used as a signal light, a bundle of light is divided after the laser passes through a pulse selector, the bundle of light is converted into a pulse electric signal, the electric signal after treatment as a clock signal is used for controlling an active mode-locking head of the other laser or a Q switch, and therefore, the time synchronization or the time constancy of the two lasers is obtained by controlling the repetition frequency of the laser. In relation to an OPCPA technique, a femto second signal light is stretched by a pulse signal stretcher, and therefore, the stretched signal light and pumping light can achieve time self-adapting strict synchronization under the same pulse width by a certain delay. Therefore, the ultra-short pulse laser time self-adapting synchronization method can magnify the signal light with high efficiency and has high signal-to-noise ratio and gain, and the ultra-short pulse laser time self-adapting synchronization method also provides a new path for generating an ultra-short pulse with high power and strength. The ultra-short pulse laser time self-adapting synchronization method has very importance value for impelling the wide application and the wide development of the ultra-short pulse.
Description
Technical field
The present invention relates to the ultra-short pulse laser technology, particularly a kind of ultra-short pulse laser time adaptive synchronization method and device thereof.
Background technology
Since utilizing, mixed since mode locking that Nd glass carries out laser obtains ultrashort light pulse DeMaria in 1966, people just notice the great potential that ultrashort light pulse is used, for example former Soviet Union's NIKOLAY LEBEDEV research institute sets up ultra-short pulse laser system first nineteen sixty-eight, carries out the laser fusion experiment.1991, people such as D.E.Spence utilize argon laser to do pumping source, with prism compensated cavity internal dispersion, succeeding in developing first with the titanium-doped sapphire is the femtosecond self mode-locked laser of gain media, indicates that the femto-second solid laser device has entered a new developing stage.Particularly DStrickland in 1985 and G Mourou being proposed to warble first, (Chirped-Pulse Amplifying CPA) is applied to the Solid State Laser amplification system to (frequency scanning) pulse amplifying technique, has solved the problem that femto-second laser pulse amplifies.From then on the generation of ultrashort light pulse, amplification and application study is active day by day, and its application relates to various fields such as chemistry, biology, medical science, spectroscopy.In the Study of Interaction of ultrashort light pulse and material or some special application, sometimes need to solve two or many distinct pulse widths, different capacity, different wavelength of laser device synchronous workings or have the problem of constant time difference.In the amplifying technique research of ultrashort light pulse, people such as I N Ross have proposed a kind of brand-new ultrashort light pulse amplifying technique in 1997---optical parameter chirped pulse amplification (optical parametric chirped-pulse amplifying, OPCAP), it not only has the advantage that chirped pulse amplifies (CPA) high-gain, also have optical parameter simultaneously concurrently and amplify the extremely wide advantage of (OPA) technology gain bandwidth, avoided the gain narrowing of amplification process.In addition, adopt the optical parameter chirped pulse to amplify the prepulsing that can reduce laser pulse greatly, and have only very low B integration accumulation and relative less heat distortion, can obtain the maximum output higher, the pulse laser of average output power, have high signal to noise ratio simultaneously than existing admire jewel regenerative amplifier and multi-pass amplifier.Yet OPCPA realizes by the coupling between the light wave, and the time synchronized of pump light and flashlight is had higher requirement, if pump light and flashlight are injected crystal simultaneously, pump light is the forward position and the edge, back of amplifying signal light pulse symmetrically.Otherwise it is asymmetric that the spectrum of amplifying signal light will become, and produces distortion and " drift " (being similar to the red shift among the CPA), and gain also decreases.In OPA research in the past, pump light and flashlight take out with beam-splitter from same laser, and time synchronized is easier to solve.But in OPCPA research, pump light and flashlight are from two different lasers, and this has brought great difficulty for enforcement OPCAP.Therefore solve the key that the OPCAP time synchronization problem is this technology of development, if pump light has identical pulsewidth with broadened femtosecond flashlight, while energy stationary problem settling time, OPCAP then can obtain maximum gain and higher signal to noise ratio and stability.The burst length simultaneous techniques that has now proposed adopts synchronizer trigger, can only make two pulse lasers synchronous when starting, and the asynchronous of the pulse that the time drift in operation process causes still is not resolved.Therefore study the output pulse self adaptation of pulse laser in operation process and remain very important problem synchronously, will have crucial meaning the practical application and the further developing of ultrashort ultra-intense laser technology of the ultrashort pulse of time synchronized.
Summary of the invention
At above-mentioned technical barrier, the object of the present invention is to provide a kind of ultra-short pulse laser time adaptive synchronization method, this method can make the output burst length self adaptation of different ultrashort pulse lasers device in operation process synchronous, and another object of the present invention is that a kind of device based on said method is provided simultaneously.
The object of the present invention is achieved like this:
A kind of ultra-short pulse laser time adaptive synchronization method, steps of the method are: with the laser of laser output as flashlight, this flashlight carries out beam splitting by beam splitter to be handled, convert wherein a branch of light of telling to pulse electrical signal by optical-electrical converter, to this pulse electrical signal amplify, shaping, frequency conversion synthetic after, it is exported to the active mode locking head or the Q switching of another laser as clock signal, thereby control the repetition rate of this laser, make the pulse laser of two lasers synchronous or the time difference is constant.
Further, described flashlight is at first handled through the pulse selector, to obtain required repetition rate laser, then should required repetition rate laser exports to beam splitter and carries out the beam splitting processing.
Further, described flashlight is at first through pulse stretcher broadening, and then flows to beam splitter or pulse selector is handled, and the pulsewidth of the flashlight behind the broadening is identical with the pulsewidth of pump light, flashlight behind the broadening by certain light delay after, realize with pump light synchronously.
Further, flashlight after the certain light delay of described process and pump light together amplify through photoparametric amplifier, after the pulsewidth compressor processes, export as ultra-short pulse laser again.
A kind of device of implementing above-mentioned ultra-short pulse laser time adaptive synchronization method, comprise the flashlight laser, beam splitter, optical-electrical converter, electric signal processor, the pump light laser, the laser of described flashlight laser output outputs to beam splitter as flashlight, after beam splitter carries out beam splitting to flashlight, wherein a branch of light is outputed to optical-electrical converter convert pulse electrical signal to, this pulse electrical signal amplifies through electric signal processor, shaping, the synthetic back of frequency conversion flows to active mode locking head or Q switching on the pump light laser as clock signal, and the pulse laser time self adaptation that the pulse laser of pump light laser output and flashlight laser are exported is synchronous or the time difference is constant.
Further, also be provided with pulse selector between described flashlight laser and the described beam splitter, flashlight obtains required repetition rate laser after the pulse selector is handled, and this required repetition rate laser is exported to described beam splitter again.
Further, described flashlight laser downstream also is provided with pulse stretcher, and flashlight is exported to described pulse selector or beam splitter again behind pulse stretcher broadening.
Further, described pump light laser downstream is provided with laser amplifier, the pump light of the flashlight of described beam splitter output and laser amplifier output together is output to photoparametric amplifier, the photoparametric amplifier downstream also is provided with pulse shortener, and the laser of photoparametric amplifier output becomes ultra-short pulse laser output after the pulsewidth compressor processes.
Further, described flashlight laser adopts titanium-doped sapphire kerr lens self mode locked fs laser or its modified model, or the ultrashort pulse laser of employing active mode locking, its repetition rate stability is not less than the frequency stability that needs synchronous laser locked mode head.
Further, digital circuit or analog circuit are adopted in described electric signal processor front-end circuit processing section, can carry out frequency conversion or non-frequency-conversion processing as requested, and the analog circuit of high stable is adopted in power amplification.
Further, described pump light laser adopts that active mode locking turns round or initiatively transfers Q's.
Further, described pulse stretcher and described pulse shortener adopt traditional fiber or photonic crystal fiber or grating or the dielectric mirror of warbling.
Further, described laser amplifier and described photoparametric amplifier are regenerative amplification or many logical amplify or optical parameter is amplified and comprised multistage amplification.
Further, the used crystal of described photoparametric amplifier is LBO, BBO, KDP.
The present invention tells a branch of light with the laser of a ultrashort pulse laser as flashlight and converts pulse electrical signal to by optical-electrical converter behind the pulse selector, the signal of telecommunication removes to control another laser active mode locking head or Q switching as clock signal more after treatment, thereby the repetition rate of controlling this laser obtains two laser pulse time synchronized or the time is constant.Even this method has solved the also synchronous problem of time self adaptation of pulse that the laser of two or many different capacities, different pulses exports in operation process, for promoting the application study of ultrafast process, the application of widening ultrashort laser has very important value.Use it in the optical parameter chirped pulse amplification, not only can obtain low-repetition-frequency, high-peak power, the perhaps femtosecond laser of high repetition frequency, high-average power, and have high-gain, high s/n ratio, high advantages such as pumping efficiency.Therefore this method also has crucial meaning to the research that promotes the femtosecond laser amplifying technique.
Description of drawings
The schematic diagram of Fig. 1 ultra-short pulse laser time of the present invention adaptive synchronization method and device thereof;
Fig. 2 the present invention is used for the time synchronized schematic diagram of optical parameter chirped pulse amplification;
Fig. 3 embodiment of the invention 1 schematic diagram;
Fig. 4 embodiment of the invention 2 schematic diagrames;
Fig. 5 embodiment of the invention 3 schematic diagrames.
Embodiment
As shown in Figure 1, the laser of ultrashort pulse laser output that is not less than the frequency stability that needs synchronous laser active mode locking device with the stability of a repetition rate is as flashlight, the flashlight of selecting required repetition rate through pulse selector is divided into two bundles through beam splitter, change into pulse electrical signal with a branch of light wherein through optical-electrical converter, again through shaping, put in advance, frequency conversion, synthetic, amplify perhaps filtering, the pre-amplification, amplitude limit, frequency conversion, filtering, signal of telecommunication treatment technologies such as radio frequency amplification needing to obtain the needed rf power signal of active mode locking device of synchronous laser.Remove to drive its active mode locking head with the radiofrequency signal that obtains, thereby when the repetition rate of flashlight fluctuates, then also fluctuation thereupon of the rf frequency of active mode locking device, can stablize at locked mode under the situation of output, because the repetition rate of output laser changes with the rf frequency of mode locker, can realize the synchronous output of two laser pulse signals thus or have the constant time difference.
As shown in Figure 2, if be used for optical parameter chirped pulse amplification (OPCPA), then the ultrashort pulse flashlight of output arrives required pulsewidth by the pulse stretcher broadening earlier, then behind above-mentioned same treatment step, another of flashlight restrainted delayed device again and postponed, it is synchronous accurately to obtain flashlight and pump light.
Embodiment 2 is for obtaining the OPCPA example of high repetition frequency, high-average power femtosecond pulse as shown in Figure 4.With a Nd:YVO
4The all solid state titanium-doped sapphire kerr lens self mode locked fs laser of pumping is as signal source, pulsewidth is 30fs, wavelength is 790nm, repetition rate is 100MHz, power output is 200mW, because the repetition rate of femtosecond pulse only determines frequently by the chamber of Ti:S laser cavity, so its chamber stability frequently realizes being not less than the frequency stability of acousto-optic mode-locking device, can take out the locked mode head that signal goes to drive OPA pump light after treatment from signal optical source like this and can not can make pump light mode locking pulse losing lock.
The flashlight of femto-second laser output by the pulse stretching grating stretching to 290ps (near 10
4Doubly, broadening is to consistent with the pulsewidth of pump light), tell by a beam splitter and a branch ofly to convert electric impulse signal to by optical-electrical converter, the processing mode by similarly to Example 1 obtains rf power signal, and to go driving frequency be the Nd:YVO as pump light of 50MHz
4The locked mode head of laser, Nd:YVO
4The laser output pulse width is 290ps, average power is 20W, wavelength 1064nm, it is amplified to required power by laser amplifier, obtain the pump light of 532nm then by frequency multiplication, delayed acquisition of synchronous signal light and pump light self adaptation are synchronous, and flashlight and pump light are carried out the optical parameter amplification by lbo crystal, can carry out multistage amplification, the flashlight after the amplification has just obtained to have the femtosecond laser of high repetition frequency, high-average power again by dispersion compensation and grating compression.
Embodiment 3 is for obtaining the OPCPA example of low-repetition-frequency, high-average power femtosecond pulse as shown in Figure 5.Used flashlight and pump light laser and pulse stretcher, the compression grating is identical with example 2, pulse signal extracts to be handled also identical with example 2 with the signal of telecommunication, when picked up signal light and pump light pulse self adaptation synchronously after, they are delivered to a single pulse selector simultaneously select the pulse signal that repetition rate is 10Hz, by dichroscope pump light and flashlight are separated then, pump light is amplified to required energy through laser amplifier again, tell its 10% and flashlight carry out LBO-OPA and amplify in advance, pre-amplifying signal light carries out KTA-OPA with 90% pump light again and amplifies, and all self adaptation is synchronous to need to make the pump light of each amplification process and flashlight through some light delaies in this process.Can obtain high-peak power by dispersion compensation and pulse compression at last, the femtosecond laser of low-repetition-frequency, this scheme can make pump light amplifying signal light the most efficiently.
Claims (14)
1. ultra-short pulse laser time adaptive synchronization method, it is characterized in that, steps of the method are: with the laser of laser output as flashlight, this flashlight carries out beam splitting by beam splitter to be handled, convert wherein a branch of light of telling to pulse electrical signal by optical-electrical converter, to this pulse electrical signal amplify, shaping, frequency conversion synthetic after, it is exported to the active mode locking head or the Q switching of another laser as clock signal, thereby control the repetition rate of this laser, make the pulse laser of two lasers synchronous or the time difference is constant.
2. ultra-short pulse laser time adaptive synchronization method as claimed in claim 1, it is characterized in that, described flashlight is at first handled through the pulse selector, to obtain required repetition rate laser, then should required repetition rate laser exports to beam splitter and carries out the beam splitting processing.
3. ultra-short pulse laser time adaptive synchronization method as claimed in claim 2, it is characterized in that, described flashlight is at first through pulse stretcher broadening, and then flow to beam splitter or pulse selector is handled, the pulsewidth of the flashlight behind the broadening is identical with the pulsewidth of pump light, flashlight behind the broadening by certain light delay after, realize with pump light synchronously.
4. ultra-short pulse laser time adaptive synchronization method as claimed in claim 3, it is characterized in that, flashlight after the certain light delay of described process and pump light together amplify through photoparametric amplifier, after the pulsewidth compressor processes, export as ultra-short pulse laser again.
5. device of implementing one of them described ultra-short pulse laser time adaptive synchronization method of claim 1-4, it is characterized in that, comprise the flashlight laser, beam splitter, optical-electrical converter, electric signal processor, the pump light laser, the laser of described flashlight laser output outputs to beam splitter as flashlight, after beam splitter carries out beam splitting to flashlight, wherein a branch of light is outputed to optical-electrical converter convert pulse electrical signal to, this pulse electrical signal amplifies through electric signal processor, shaping, the synthetic back of frequency conversion flows to active mode locking head or Q switching on the pump light laser as clock signal, and the pulse laser time self adaptation that the pulse laser of pump light laser output and flashlight laser are exported is synchronous or the time difference is constant.
6. the device of enforcement ultra-short pulse laser time adaptive synchronization method as claimed in claim 5, it is characterized in that, also be provided with pulse selector between described flashlight laser and the described beam splitter, flashlight obtains required repetition rate laser after the pulse selector is handled, this required repetition rate laser is exported to described beam splitter again.
7. the device of enforcement ultra-short pulse laser time adaptive synchronization method as claimed in claim 6, it is characterized in that, described flashlight laser downstream also is provided with pulse stretcher, and flashlight is exported to described pulse selector or beam splitter again behind pulse stretcher broadening.
8. the device of enforcement ultra-short pulse laser time adaptive synchronization method as claimed in claim 7, it is characterized in that, described pump light laser downstream is provided with laser amplifier, the pump light of the flashlight of described beam splitter output and laser amplifier output together is output to photoparametric amplifier, the photoparametric amplifier downstream also is provided with pulse shortener, and the laser of photoparametric amplifier output becomes ultra-short pulse laser output after the pulsewidth compressor processes.
9. as the device of one of them described enforcement ultra-short pulse laser time adaptive synchronization method of claim 5-8, it is characterized in that, described flashlight laser adopts titanium-doped sapphire kerr lens self mode locked fs laser or its modified model, or the ultrashort pulse laser of employing active mode locking, its repetition rate stability is not less than the frequency stability that needs synchronous laser locked mode head.
10. as the device of one of them described enforcement ultra-short pulse laser time adaptive synchronization method of claim 5-8, it is characterized in that, digital circuit or analog circuit are adopted in described electric signal processor front-end circuit processing section, can carry out frequency conversion or non-frequency-conversion processing as requested, the analog circuit of high stable is adopted in power amplification.
11. the device as one of them described enforcement ultra-short pulse laser time adaptive synchronization method of claim 5-8 is characterized in that, described pump light laser adopts that active mode locking turns round or initiatively transfers Q's.
12. the device as claim 7 or 8 described enforcement ultra-short pulse laser time adaptive synchronization methods is characterized in that, described pulse stretcher and described pulse shortener adopt traditional fiber or photonic crystal fiber or grating or the dielectric mirror of warbling.
13. the device of enforcement ultra-short pulse laser time adaptive synchronization method as claimed in claim 8 is characterized in that, described laser amplifier and described photoparametric amplifier are regenerative amplification or many logical amplify or optical parameter is amplified and comprised multistage amplification.
14. the device as claim 8 or 13 described enforcement ultra-short pulse laser time adaptive synchronization methods is characterized in that the used crystal of described photoparametric amplifier is LBO, BBO, KDP.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310118505 CN1275363C (en) | 2003-12-11 | 2003-12-11 | Ultrashort pulse laser time self-adapting synchronization method and apparatus therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310118505 CN1275363C (en) | 2003-12-11 | 2003-12-11 | Ultrashort pulse laser time self-adapting synchronization method and apparatus therefor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1547292A CN1547292A (en) | 2004-11-17 |
| CN1275363C true CN1275363C (en) | 2006-09-13 |
Family
ID=34338041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200310118505 Expired - Fee Related CN1275363C (en) | 2003-12-11 | 2003-12-11 | Ultrashort pulse laser time self-adapting synchronization method and apparatus therefor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1275363C (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050271094A1 (en) * | 2004-05-14 | 2005-12-08 | Miller Robert J D | Method and apparatus for high power optical amplification in the infrared wavelength range (0.7-20 mum) |
| CN100392925C (en) * | 2005-09-07 | 2008-06-04 | 四川大学 | Multi-pulse superimposing amplifier and femtosecond laser parameter chirped-pulse amplification laser |
| JP5240526B2 (en) * | 2010-03-15 | 2013-07-17 | オムロン株式会社 | LASER PROCESSING DEVICE, LASER LIGHT SOURCE DEVICE, AND LASER LIGHT SOURCE DEVICE CONTROL METHOD |
| CN105914571A (en) * | 2016-06-24 | 2016-08-31 | 中国科学院上海光学精密机械研究所 | Long and short laser pulse synchronization device |
| CN107707468B (en) * | 2017-09-19 | 2021-05-07 | 新华三技术有限公司 | Link state maintenance method and device |
| CN107830938B (en) * | 2017-10-12 | 2019-06-18 | 中国科学院上海光学精密机械研究所 | Pulse laser signal-to-noise ratio detection device |
| DE102017129637A1 (en) * | 2017-12-12 | 2019-06-13 | Westfälische Wilhelms-Universität Münster | Ultra-short pulse laser system with fast tunable central wavelength |
| FR3080495B1 (en) * | 2018-04-20 | 2021-08-06 | Ecole Polytech | ULTRASHORT PULSES GENERATION PROCESS |
| HRP20220385T1 (en) * | 2018-06-18 | 2022-05-13 | Advalight Aps | Medical laser system |
| CN109149344A (en) * | 2018-08-14 | 2019-01-04 | 杭州镭克普光电技术有限公司 | A kind of system of impulsive synchronization that realizing the output of ultrashort pulse medium-wave infrared laser using laser difference frequency |
| CN112539847B (en) * | 2020-11-04 | 2022-06-28 | 中国科学院上海光学精密机械研究所 | Large-caliber ultrashort pulse sampling device |
-
2003
- 2003-12-11 CN CN 200310118505 patent/CN1275363C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1547292A (en) | 2004-11-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8023538B2 (en) | Ultra-high power parametric amplifier system at high repetition rates | |
| CN1275363C (en) | Ultrashort pulse laser time self-adapting synchronization method and apparatus therefor | |
| CN100392925C (en) | Multi-pulse superimposing amplifier and femtosecond laser parameter chirped-pulse amplification laser | |
| DE19812203A1 (en) | Optical pulse amplification system | |
| Matousek et al. | Design of a multi-petawatt optical parametric chirped pulse amplifier for the iodine laser ASTERIX IV | |
| EP2924500A1 (en) | Method for generation of femtosecond light pulses, and laser source thereof | |
| JP4526409B2 (en) | Method for improving contrast of laser beam and laser generator | |
| CN114830462A (en) | Method for generating gigahertz pulse bursts and laser device therefor | |
| KR20200104875A (en) | Laser system and method for generating very high repetition rate laser pulses | |
| CN102368588B (en) | Method for improving contrast of ultrashort pulse | |
| EP2827461A2 (en) | Method and laser source for generation of optically synchronized dual-wavelength ultrashort light pulses | |
| CN111769428B (en) | All-fiber high-energy pulse regeneration amplification device and method based on 2 x 3 optical switch | |
| CN111509549B (en) | High-peak power femtosecond laser negative/positive chirp pulse cascade amplification system | |
| Chang et al. | Regenerative amplification of temporally compressed picosecond pulses at 2 kHz | |
| CN110459939B (en) | Active Q-switched fiber laser with narrow line width, narrow pulse width and high repetition frequency | |
| CN2819545Y (en) | Multi-pulse superimposed amplifier and fly-second laser parameter chip pulsing amplified laser | |
| CN1207825C (en) | Optical parameter chatter pulses amplification laser system | |
| CN216598384U (en) | Stimulated Brillouin scattering and stimulated Raman scattering combined compressed ultrashort pulse laser | |
| CN208028366U (en) | A kind of femtosecond laser compression set based on heterojunction structure waveguide array | |
| Salin et al. | Amplification of 1 ps pulses at 1.053 μm in a Ti: Al2O3 regenerative amplifier | |
| WO2021243513A1 (en) | All-fiber high-energy pulse regenerative amplification apparatus and method based on 2×3 optical switch | |
| EP3182531A1 (en) | Method for generation of ultrashort light pulses | |
| CN1119846C (en) | Ultrashort-pulse chirp photoparametric laser device | |
| CN2612114Y (en) | Ytterbium-doping tunable optical fiber laser device | |
| CN110148881A (en) | A kind of bat watt grade optical parameter chirped pulse amplification method and device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060913 Termination date: 20141211 |
|
| EXPY | Termination of patent right or utility model |