CN1211095A - All-solid self-mode-locking femtosecond laser - Google Patents
All-solid self-mode-locking femtosecond laser Download PDFInfo
- Publication number
- CN1211095A CN1211095A CN 98112985 CN98112985A CN1211095A CN 1211095 A CN1211095 A CN 1211095A CN 98112985 CN98112985 CN 98112985 CN 98112985 A CN98112985 A CN 98112985A CN 1211095 A CN1211095 A CN 1211095A
- Authority
- CN
- China
- Prior art keywords
- laser
- mirror
- self
- mode
- gain media
- 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.)
- Granted
Links
- 239000007787 solid Substances 0.000 title claims abstract description 19
- 230000003287 optical effect Effects 0.000 claims description 21
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- 239000013078 crystal Substances 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 239000002019 doping agent Substances 0.000 claims description 2
- 229910052738 indium Inorganic materials 0.000 claims description 2
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 claims description 2
- 241000931526 Acer campestre Species 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 6
- 238000011160 research Methods 0.000 abstract description 3
- 230000004927 fusion Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- 230000008569 process Effects 0.000 abstract description 2
- 238000007711 solidification Methods 0.000 abstract 1
- 230000008023 solidification Effects 0.000 abstract 1
- 238000005086 pumping Methods 0.000 description 4
- 239000010936 titanium Substances 0.000 description 4
- 201000009310 astigmatism Diseases 0.000 description 3
- 229910052594 sapphire Inorganic materials 0.000 description 3
- 239000010980 sapphire Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003595 spectral effect Effects 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000010437 gem Substances 0.000 description 1
- 229910001751 gemstone Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 239000005304 optical glass Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
Images
Landscapes
- Lasers (AREA)
Abstract
The invention relates to an Nd: LMA full-solid self-mode-locking femtosecond laser capable of generating laser wavelength of 1054nm, which adopts SF57 as Kerr medium, enhances self-focusing effect, reduces self-mode-locking self-starting threshold power, solves the problem that Nd: LMA gain medium can not be self-mode-locked directly due to small nonlinear coefficient, realizes full solidification, becomes a femtosecond laser light source with small volume and stable output, and has application value in the fields of large-scale and super-large-scale laser systems, field intensity physics, laser nuclear fusion, X-ray laser, ultrafast process research and the like.
Description
The invention belongs to the improvement of solid state laser structure.
The self mode locking technology of laser has brought deep change for the generation of the ultrashort pulse of solid state laser.From titanium jewel self mode locking laser, directly produced at present the short optical pulse of 6.5fs, adopted chamber external compression technology to obtain light pulse less than 5fs.And utilizing chirped pulse amplification to make solid laser system can obtain high peak power density and big output energy, the high-intensity ultrafast laser physics of solid state laser becomes the research focus thus.Because all solid laser is by laser diode (LD) light-pumped solid state laser, has the efficient height, advantages such as volume is little, the life-span is long, good stability, so the total solids self mode-locked laser has become the developing direction that laser field is studied.
The self mode locking of realizing solid state laser then requires gain medium to have big non linear coefficient (n
2), so that enough strong self-focusing effect to be provided, and reduce the starting power of self mode locking.As: Ti:Sapphire, Cr:LiSAF, Nd; Gain medium such as YAG, Nd:YLF all has big non linear coefficient, can satisfy the requirement of self mode locking.But the Cr:LiSAF medium can not be exported the laser pulse of 1054nm, and Nd; YAG, Nd:YLF, Ti; Though the laser pulse about the exportable 1054nm of gain medias such as Sapphire, but Nd:YAG and Nd:YLF can not produce femtosecond pulse because of spectral half-width is narrow, wherein Ti:Sapphire gains lowlyer on the 1054nm wavelength, and can not use the laser diode pump-coupling; Nd:LMA (La
1-xMgNd
xAl
11O
19Though) centre wavelength of laser medium on 1054nm because the non linear coefficient of itself is less, can not directly carry out kerr lens mode locking.So do not see so far the fully solid self mode-locked femto second laser that can produce the 1054nm laser pulse arranged.
Purpose of the present invention overcomes above-mentioned existing problems exactly, designs a kind of fully solid self mode-locked femto second laser that can produce the 1054nm laser pulse.
The designed fully solid self mode-locked femto second laser that can export the 1054nm wavelength of the present invention is to be made of pump optical system and laserresonator coupling, adopting the Nd:LMA of high-dopant concentration is gain media, do kerr medium with SF57, with laser diode-pumped realization; Its concrete technical scheme is, is pumping source with the laser diode, and pump light enters laserresonator by the pump optical system, is provided with optical lens group and half-wave plate in optical system; The structure of laserresonator is followed successively by, the Nd:LMA gain media, its input face is a planar ends, be coated with Double-color film, promptly to the high transmission of pump light, to the reflection of growing tall of the laser wave of 1054nm, the other end is the Brewster angle cutting, concave mirror before the gain media output beam reflects to height through slit, be provided with high reflection back concave surface mirror with preceding concave mirror relative position, the SF57 kerr medium that two ends are the Brewster angle cutting is set between two concave mirrors, and the outgoing beam of back concave surface mirror arrives the output plane mirror through a pair of compensating prism and slit, and the output plane mirror is fixed on the micrometric displacement vibrator.Feature of the present invention also is, the optical path length of whole laserresonator is adjusted near 1154mm, optical path length from the planar ends of gain media to preceding concave mirror is 400mm, concave mirror is 74mm to the optical path length of back concave surface mirror in the past, wherein preceding concave mirror to kerr medium front end is 24.7mm, optical path length from the back concave surface mirror to the output plane mirror is 680mm, wherein prism between apart from being 620mm.
The fully solid self mode-locked femto second laser that the present invention is designed, have big non linear coefficient and the SF57 of very fast response time as kerr medium owing to adopted, strengthened self-focusing effect, reduced self mode locking self-starting threshold power, make the Nd:LMA laser realize stable kerr lens mode locking, solved the Nd:LMA gain media because of the little directly problem of self mode locking of non linear coefficient, its laser pulse width can reach 610fs, wavelength 1054nm; Make the Nd:LMA laser realize total solidsization in laser diode-pumped mode, it is little to become volume, export stable femtosecond laser light source, it has important use and is worth in fields such as extensive and ultra-large laser system, field intensity physics, laser fusion, X-ray laser and ultrafast process researchs.
Accompanying drawing 1 is that gain media, SF57 are the structural representation of the fully solid self mode-locked femto second laser of kerr medium with Nd:LMA for the present invention is designed, and 1 is laser diode among the figure, and 2 is the pump optical system, 3 is half-wave plate, 4 is gain media, and 5 is slit, and 6 is preceding concave mirror, 7 is kerr medium, 8 is the back concave surface mirror, and 9 is compensating prism, and 10 is compensating prism, 11 is slit, and 12 is the output plane mirror.
Describe the enforcement and the operation principle of technical solution of the present invention in detail below in conjunction with accompanying drawing.
The concrete implementation example of the designed fully solid self mode-locked femto second laser of the present invention is as follows.Pumping source adopts laser diode, output wavelength 798nm, the structural order of pump optical system can be compound collimating lens, cylindrical lens, half-wave plate (λ/2), the spherical surface focusing lens are formed, by to the optimization of pump optical system and the calculating of maximum coupling coefficient, make pump light pattern and laser cavity mould reach optimum Match, wherein adopt half-wave plate rotation pumping polarisation of light direction, to realize the maximum polarization absorption of Nd:LMA crystal, improve pumping efficiency, Nd:LMA gain media Nd doping content is at 9-15at%, crystalline size φ 5 * 9mm is wrapped up in crystal and is placed the mode in the red copper frame to dispel the heat with the indium suitcase, and the input face of crystal is a planar ends, be coated with Double-color film, promptly to the high transmission of pump light, to the reflection of growing tall of the laser wave of 1054nm, the other end of crystal is the Brewster angle cutting; The effect of slit 5 is to combine with the self-focusing effect of kerr medium to form class saturated absorption squeezed light pulse realization self mode locking, and the effect of slit 11 is tuning laser oscillation center wavelength stuck-at-054nm, realizes stable mode locking pulse output; Gain media output light arrives preceding concave mirror through slit 5, light path from the planar ends of gain media to preceding concave mirror is 400mm, preceding concave mirror to the optical path length of back concave surface mirror is 74mm, be 24.7mm wherein apart from the kerr medium front end, high reflection plated film is all arranged on two concave mirrors, and the SF57 kerr medium that is provided with between two concave mirrors is long to be 15mm, its two end is the Brewster angle cutting, SF57 is the code name of optical glass material, the colleague technical staff knows, in order to realize astigmatism compensation, before concave mirror surface radius of curvature and beam incident angle thereof choose the astigmatism compensation that should be taken into account gain media Bu Shi face and kerr medium front end Bu Shi face, then concave mirror surface radius of curvature and beam incident angle thereof chooses the astigmatism compensation that also should be taken into account kerr medium rear end Bu Shi face; The emergent light of back concave surface mirror through the dispersion compensation prism to 9 and 10 and slit 11 arrive the output plane mirrors, its optical path length is 680mm, wherein prism between apart from be 620mm, with 10 vertical adjustment the chamber internal dispersion is compensated 9 by prism, the output of realization ultrashort light pulse; Be fixed on the output plane mirror on the micrometric displacement vibrator, choose the output coupling mirror of low transmission (＜0.2%),, strengthen in the chamber non-linear to improve interacvity gain power.
By the fully solid self mode-locked femto second laser of the Nd:LMA of above-mentioned for example requirements making, the output wavelength that obtains is 1054nm, light impulse length 610fs, the femto-second laser pulse of spectral half-width 2.1nm; Its locked mode average output power is 15mW, and repetition rate is 130MHz; It is 620mW with the laser diode-pumped continuous running of 3W in 1054nm wavelength continuous power output, oblique efficient 50%, light-light conversion efficiency 20%.Designed laser is not self-starting, be to realize self-starting by vibration output cavity mirror 12, but its locked mode is from keeping, promptly turn off vibrator after, locked mode still can be kept certainly.
Claims (3)
1. fully solid self mode-locked femto second laser, its output optical maser wavelength is 1054nm, be to constitute by the coupling of pump optical system and laserresonator, adopt high-dopant concentration the Nd:LMA gain media, do kerr medium with SF57, with laser diode-pumped realization; It is characterized in that, in optical system, be provided with half-wave plate; The structure of its laserresonator is followed successively by, pump light incident Nd:LMA gain media, its input face is a planar ends, be coated with Double-color film, promptly to the high transmission of pump light, to the reflection of growing tall of the laser wave of 1054nm, the other end is the Brewster angle cutting, concave mirror before the gain media output beam reflects to height through slit (5), be provided with high reflection back concave surface mirror with preceding concave mirror relative position, the SF57 kerr medium that two ends are the Brewster angle cutting is set between two concave mirrors, the outgoing beam of back concave surface mirror arrives the output plane mirror through a pair of compensating prism (9 and 10) and slit, and the output plane mirror is fixed on the micrometric displacement vibrator.
2. laser according to claim 1, it is characterized in that, the optical path length of whole laserresonator is adjusted near 1154mm, optical path length from the planar ends of gain media to preceding concave mirror is 400mm, concave mirror is 74mm to the optical path length of back concave surface mirror in the past, wherein preceding concave mirror to kerr medium front end is 24.7mm, and the optical path length from the back concave surface mirror to the output plane mirror is 680mm, wherein prism between apart from being 620mm.
3. laser according to claim 2 is characterized in that, described Nd:LMA gain media Nd doping content is wrapped up in dielectric crystal and placed the mode in the red copper frame to dispel the heat with the indium suitcase at 9-15at%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98112985A CN1099741C (en) | 1998-10-06 | 1998-10-06 | All-solid self-mode-locking femtosecond laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98112985A CN1099741C (en) | 1998-10-06 | 1998-10-06 | All-solid self-mode-locking femtosecond laser |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1211095A true CN1211095A (en) | 1999-03-17 |
| CN1099741C CN1099741C (en) | 2003-01-22 |
Family
ID=5222772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98112985A Expired - Fee Related CN1099741C (en) | 1998-10-06 | 1998-10-06 | All-solid self-mode-locking femtosecond laser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1099741C (en) |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1295170C (en) * | 2004-05-19 | 2007-01-17 | 上海大学 | Method for inducing functional cryctalline material from glass and crystalline using femtosecond laser |
| CN1307413C (en) * | 2005-01-25 | 2007-03-28 | 中国科学院武汉岩土力学研究所 | Method for laser cold cutting pore media of rock and soil in femtosecond |
| CN1332188C (en) * | 2002-12-31 | 2007-08-15 | 中国科学院西安光学精密机械研究所 | Double independent tuning femtosecond resolution pumping-detection spectrometer core |
| CN100375346C (en) * | 2003-12-31 | 2008-03-12 | 中国科学院西安光学精密机械研究所 | Core plug-in unit of multi-wavelength cross mode-locked femtosecond laser |
| CN102097737A (en) * | 2010-12-08 | 2011-06-15 | 青岛大学 | High pulse repetition frequency ultra-short pulse laser method |
| CN102244350A (en) * | 2011-04-22 | 2011-11-16 | 青岛大学 | Tunable ultrashort pulse laser device with eye-safe wave band |
| CN104953455A (en) * | 2015-06-10 | 2015-09-30 | 中国科学院物理研究所 | Kerr-lens mode-locked solid sheet laser device |
| CN105186275A (en) * | 2015-10-13 | 2015-12-23 | 中国科学院物理研究所 | Carrier envelope phase locking device for femtosecond pulse laser |
| CN105576491A (en) * | 2016-03-14 | 2016-05-11 | 大恒新纪元科技股份有限公司 | Femtosecond laser oscillator |
| CN105932534A (en) * | 2016-06-17 | 2016-09-07 | 北京国科世纪激光技术有限公司 | Intracavity frequency doubling astigmatism compensation type laser |
| CN106463183A (en) * | 2014-03-23 | 2017-02-22 | 海因里希·霍拉 | Method for generating electrical energy by laser-based nuclear fusion and laser fusion reactor |
| CN108075347A (en) * | 2016-11-15 | 2018-05-25 | 中国科学院光电研究院 | A kind of femto-second laser of conveniently adjusted laser pulse width |
| CN108075349A (en) * | 2016-11-15 | 2018-05-25 | 中国科学院光电研究院 | A kind of picosecond laser of conveniently adjusted laser pulse width |
| CN109494557A (en) * | 2018-12-04 | 2019-03-19 | 西南大学 | A kind of laser diode-pumped complete solid state pulse amplitude chaotic laser light source |
| CN109698462A (en) * | 2019-03-07 | 2019-04-30 | 西南大学 | A kind of Q-switch laser source of convertible wavelength |
| CN103972778B (en) * | 2014-05-20 | 2019-08-16 | 西安电子科技大学 | A kind of all solid state femto-second laser of kerr lens mode locking Yb:YCOB of diode pumping |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1323495C (en) * | 1988-04-29 | 1993-10-26 | Marc Reist | Process and apparatus for converting of solid high-grade copper matte |
| US5163059A (en) * | 1991-05-09 | 1992-11-10 | Coherent, Inc. | Mode-locked laser using non-linear self-focusing element |
| US5265109A (en) * | 1992-10-23 | 1993-11-23 | At&T Bell Laboratories | Ultrashort optical pulse signals generation |
| WO1994010729A1 (en) * | 1992-11-03 | 1994-05-11 | British Technology Group Ltd. | A laser and a device for initiating mode-locking of a laser beam |
| US5799025A (en) * | 1995-05-12 | 1998-08-25 | Novatic Laser Systems, Inc. | Self starting, self mode-locked lasers |
-
1998
- 1998-10-06 CN CN98112985A patent/CN1099741C/en not_active Expired - Fee Related
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1332188C (en) * | 2002-12-31 | 2007-08-15 | 中国科学院西安光学精密机械研究所 | Double independent tuning femtosecond resolution pumping-detection spectrometer core |
| CN100375346C (en) * | 2003-12-31 | 2008-03-12 | 中国科学院西安光学精密机械研究所 | Core plug-in unit of multi-wavelength cross mode-locked femtosecond laser |
| CN1295170C (en) * | 2004-05-19 | 2007-01-17 | 上海大学 | Method for inducing functional cryctalline material from glass and crystalline using femtosecond laser |
| CN1307413C (en) * | 2005-01-25 | 2007-03-28 | 中国科学院武汉岩土力学研究所 | Method for laser cold cutting pore media of rock and soil in femtosecond |
| CN102097737A (en) * | 2010-12-08 | 2011-06-15 | 青岛大学 | High pulse repetition frequency ultra-short pulse laser method |
| CN102244350A (en) * | 2011-04-22 | 2011-11-16 | 青岛大学 | Tunable ultrashort pulse laser device with eye-safe wave band |
| CN102244350B (en) * | 2011-04-22 | 2012-12-12 | 青岛大学 | Tunable ultrashort pulse laser device with eye-safe wave band |
| CN106463183B (en) * | 2014-03-23 | 2018-04-27 | 海因里希·霍拉 | For generating the method and lareactor of electric energy by the nuclear fusion based on laser |
| CN106463183A (en) * | 2014-03-23 | 2017-02-22 | 海因里希·霍拉 | Method for generating electrical energy by laser-based nuclear fusion and laser fusion reactor |
| CN103972778B (en) * | 2014-05-20 | 2019-08-16 | 西安电子科技大学 | A kind of all solid state femto-second laser of kerr lens mode locking Yb:YCOB of diode pumping |
| CN104953455A (en) * | 2015-06-10 | 2015-09-30 | 中国科学院物理研究所 | Kerr-lens mode-locked solid sheet laser device |
| CN105186275A (en) * | 2015-10-13 | 2015-12-23 | 中国科学院物理研究所 | Carrier envelope phase locking device for femtosecond pulse laser |
| CN105186275B (en) * | 2015-10-13 | 2019-04-02 | 中国科学院物理研究所 | The carrier envelope phase locking device of femtosecond pulse |
| CN105576491A (en) * | 2016-03-14 | 2016-05-11 | 大恒新纪元科技股份有限公司 | Femtosecond laser oscillator |
| CN105932534A (en) * | 2016-06-17 | 2016-09-07 | 北京国科世纪激光技术有限公司 | Intracavity frequency doubling astigmatism compensation type laser |
| CN108075347A (en) * | 2016-11-15 | 2018-05-25 | 中国科学院光电研究院 | A kind of femto-second laser of conveniently adjusted laser pulse width |
| CN108075349A (en) * | 2016-11-15 | 2018-05-25 | 中国科学院光电研究院 | A kind of picosecond laser of conveniently adjusted laser pulse width |
| CN109494557A (en) * | 2018-12-04 | 2019-03-19 | 西南大学 | A kind of laser diode-pumped complete solid state pulse amplitude chaotic laser light source |
| CN109698462A (en) * | 2019-03-07 | 2019-04-30 | 西南大学 | A kind of Q-switch laser source of convertible wavelength |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1099741C (en) | 2003-01-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1099741C (en) | All-solid self-mode-locking femtosecond laser | |
| CN101414729B (en) | Self-mode-locking laser | |
| CN102684061B (en) | All solid-state angular momentum tunable laser device with stable pulse energy | |
| Kato | High-power difference-frequency generation at 5-11 µm in AgGaS 2 | |
| CN1162945C (en) | High-efficiency high power third harmonic wave laser generating technique | |
| CN109449736B (en) | Compact-structure watt-level continuous wave inner cavity frequency doubling single-frequency laser | |
| CN104283101A (en) | All-solid-state single-frequency tunable red laser | |
| Shang et al. | Research progress on thermal effect of LD pumped solid state laser | |
| Jing-Liang et al. | Continuous-wave output of 5.5 W at 532 nm by intracavity frequency doubling of an Nd: YVO4 laser | |
| CN204103239U (en) | A kind of all solid state single frequency tunable red laser | |
| CN102299469A (en) | Laser for realizing subnanosecond Q-modulated output by controlling pump light characteristic | |
| CN101345389B (en) | Full-solid state five-wavelength simultaneously outputting laser device and 5-wavelength laser generation method | |
| CN101728757A (en) | All-solid-state laser | |
| CN113594842A (en) | Device and method for generating ultrashort pulse of erbium-doped laser | |
| CN201149952Y (en) | Self Raman multiple frequency solid yellow light laser | |
| CN101159364A (en) | LD terminal pump Nd:YAG/SrWO4/KTP yellow light laser | |
| CN100438232C (en) | Quasi-continuous high power red, green double-wavelength laser with LD side pumping | |
| CN201766283U (en) | Passive Q-switching testing facility for semi-conductor pump solid lasers | |
| CN112636146B (en) | High-power mode-locked disc laser | |
| CN201345493Y (en) | All solid state laser | |
| CN212725943U (en) | High-coupling-efficiency kilowatt-level optical fiber output nanosecond laser with arbitrarily adjustable power | |
| CN101159362A (en) | LD terminal pump yellow light laser | |
| CN114498255A (en) | Unstable cavity laser with adjustable thermal stable region and method thereof | |
| CN203932662U (en) | Kerr lens self mode locking Yb:LYSO laser | |
| CN101159363A (en) | LD terminal pump Nd:YVO4/KTP yellow light laser |
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 | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |