CN2490740Y - Miniaturized solid flying-second laser oscillator - Google Patents
Miniaturized solid flying-second laser oscillator Download PDFInfo
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- CN2490740Y CN2490740Y CN 01219130 CN01219130U CN2490740Y CN 2490740 Y CN2490740 Y CN 2490740Y CN 01219130 CN01219130 CN 01219130 CN 01219130 U CN01219130 U CN 01219130U CN 2490740 Y CN2490740 Y CN 2490740Y
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Abstract
The utility model relates to a solid laser oscillator, comprising a focusing lens, a laser crystal, two dual-color medium film concave reflecting mirrors for the anti-reflection of pumping laser and the total reflection of the femtosecond oscillation laser broadband, three broadband total reflecting mirrors with small angles, a vertical broadband total reflecting mirror, a planar output mirror, two quartz prisms, a climb mirror, a gold-coated mirror and a base. The utility model is cabinet in structure, narrow in outputting laser impulse width, broad in light spectrum, and simple in mode-locking start-up; the utility model has the advantages of adjustable impulse width, dual-directional output, automatic spatial dispersion compensation, easy repeated production and assemblage, high reliability, low cost, etc.
Description
The utility model relates to laser technology field, particularly relates to a kind of solid self mode locking laser oscillator.
In laser technology research, ultrashort laser pulse discloses the dynamic (dynamical) unique property of material transient state as the sign of the human time period that can control and in microcosmos, is one of the most popular laser research contents always.At present, people by pulse compression technique at the obtainable short pulse width of laboratory institute near 4fs (1fs=10
-15Second), its application study has been penetrated into the forefront problem of subjects such as physics, chemistry, biology, communication, and and then caused many new subjects, as the formation and development of subjects such as high field physics, femtochemistry, the big Capacity Optical communication of ultrahigh speed.1999, U.S. scientist A.Zewail obtained Nobel chemistry Prize because of its initiative work with femtosecond laser research chemical reaction.Just because of the ubiquitous application of femtosecond laser, many scientists describe it and are " seeking the key of answer ".
Being used to produce the topmost technological means of ultrashort laser pulse is the laser mode locking technology.Come out so far from laser, locked mode has successively experienced main locked mode modes such as active mode locking, passive mode locking, synchronous pump locked mode, collision locked mode, coupling cavity locked mode (extra-pulse locked mode), kerr lens mode locking, used laser medium develops into the broadband solid laser material of today by initial arrowband Solid State Laser, broadband dye laser, pulsewidth in less than the time in 40 years from nanosecond (10
-15Second) magnitude proceeds to the dipped beam cycle (~ 3 femtosecond).But, become practical and reliable application study instrument on the real meaning of femtosecond laser, should give the credit to ti sapphire laser self mode locking technology at the beginning of the nineties, i.e. the discovery of kerr lens technology (document 1, D.E.Spence, P.N.Kean, W.Sibbert; Opt Lett.Vol.16 (1991) 42), the appearance of this technology, not only make original femtosecond laser only the power output of tens of milliwatts improved nearly two magnitudes and reached the degree of practicality, and require to compare with traditional mode-locked laser complicated technology, its structure is almost the same with common laser simple, this revolutionary breakthrough is for femtosecond laser provides the mature technique basis to productization development.
Need and the practical and reliable achievement in research based on femtosecond laser application study widely, Spectra-Physics (S-P) (document 2, http://www.splasers.com/), relevant company (document 3, http://www.coherentinc.com/) played just exploitation as far back as 1994 and released the prism of pulsewidth femtosecond more than 100 shown in dispersion compensation femto second titanium precious stone laser product and the Related product explanation, though the up-to-date product output of S-P has further shortened to 35 femtoseconds again, but compare (~ 5fs) (document 4 with present laboratory best result, G.Steinmeyer, D.H.Sutter, L.Gallmann, N.Matuschek, U.Keller; Science, Vol.286 (1999) 1507), there is bigger gap in the both, and particularly bulky, inconvenience is moved.At these shortcomings, technology university, Austria Vienna in recent years, Switzerland industrial technology university is respectively in its chirped mirror compensation of dispersion technology, semiconductor saturated absorption speculum starts on the basis of mode-locking technique research, successively by registration FemtolasersProduktions GmbH company (Austria) (document 5, http://www.femtolasers.com/) and Time-Bandwidth company (Switzerland) (document 6, http://www.timebandwidth.com/) and shown in the explanation of Related product, released the new product that volume is simplified, particularly Austrian Femtolasers ProduktionsGmbH company is by unique chirped mirror technology, its product pulsewidth is only about 20 femtoseconds, once be the unique utility goods of pulsewidth less than 100 femtoseconds, but this chirped mirror laser removes the cost costliness, each output parameter is difficult to outside the unification, its locked mode is difficult for starting, pulsewidth can not be regulated, and is unfavorable for the practical operation use.
We have realized stable mode-locking output (document 7, Wei Zhiyi, Zhang Jie, Xia Jiangfan, Feng Baohua, Zhang Xiulan, the Qiu Yang of pulsewidth 13fs to the chromatic dispersion compensation technique in employing prism in 1997 on the basis of studying the locked mode titanium precious stone laser for many years; " Chinese science " A, Vol.43 (2000) No.10), leading domestic, international most advanced level that the result occupies.After further adopting chirped mirror, obtained the result of 8.5fs, on this basis, by the practicability design, it is adjustable to succeed in developing output pulse width, the shortest novel solid femtosecond laser product model machine that reaches 18fs.
The purpose of this utility model is the deficiency that overcomes prior art, by the practicability design, provides a kind of solid self mode locked fs laser oscillator.The utility model is realized by introducing three low-angle plane of incidence broadband total reflective mirrors, is also comprised: a condenser lens, a laser crystal, two concave mirrors, a vertical broadband total reflective mirror, a flat output mirror, two quartz prisms, climb a mirror and a gold-plated mirror.This utility model structure compact, pulse is wide, and locked mode starts simple and easy, has adjustable, the two-way output of pulsewidth, compensation space chromatic dispersion automatically, reliability height, low cost and other advantages, therefore is with a wide range of applications.
The purpose of this utility model is achieved in that
As shown in Figure 1, the utility model comprises a condenser lens 1, a laser crystal 2, the concave mirror 3,4 of two double-colored deielectric-coating anti-reflection to pumping laser, that be all-trans in femtosecond oscillating laser broadband, the level crossing 5,6,7 that under three low-angle incident is all-trans in femtosecond oscillating laser broadband, a vertical broadband total reflective mirror and 10,11, one of 8,9, two quartz prisms of a flat output mirror climb mirror 12, a gold-plated mirror 13 in plane and a base plate.
Speculum by 3-9 constitutes resonant cavity.
Also can climb mirror 12 and gold-plated mirror 13, their purposes be to guarantee the oscillating laser bundle is climbed can be behind the segment distance from the output of resonant cavity top.
According to different needs, can select 8 or 9 as outgoing mirror.
The concrete parameter of element is as follows: base plate is of a size of 550 * 200mm; The focal length of condenser lens 1 is 8 ~ 13cm; Laser crystal 2 is of a size of 4 * 4 * 5mm for the ti sapphire crystal of Brewster's angle cutting; Plano-concave speculum 3,4 is radius of curvature 100mm, bore 12.7mm, the K9 glass of thickness 6mm, wherein speculum 3 is as the pumping mirror, concave surface is coated with double-colored deielectric-coating anti-reflection to 532nm and that 700 ~ 900nm is all-trans, the back side is coated with the anti-reflection film of 532nm pump light, and the concave surface of speculum 4 is coated with the broadband deielectric-coating that 700 ~ 900nm wave band is all-trans; Broadband under the low-angle incident level crossing 5,6,7 that is all-trans is the K9 glass substrate of thickness 4mm, is coated with the broadband deielectric-coating that under 3 ~ 10 ° of incidence angles 700 ~ 900nm is all-trans; Plane total reflective mirror 8 (9) is the K9 glass substrate of thickness 4mm, is coated with the broadband deielectric-coating that under the vertical incidence 700 ~ 900nm is all-trans; Flat output mirror 9 (8) is the fused quartz substrate of thickness 2mm, half sheet cutting, is coated with under the vertical incidence in 750 ~ 850nm wave band transmitance and is 10% deielectric-coating; Prism 10,11 is the quartz prism of Brewster's angle cutting, prism to relative distance be 54cm; Two broadband deielectric-coating that the vertical device of forming 12 of climbing of level crossing is all-trans for 700 ~ 900nm of the gold-plated mirror of size 20 * 20mm or 45 ° of incidents; Gold-plated mirror 13 is of a size of 20 * 20mm.
All element is installed on the base plate, and concrete installation requirement is as follows:
On the extended line of laser long arm end (prism end), put a total reflective mirror in advance, install or when debugging laser generation again first like this, only need to make first prism 10 withdraw from light path shown in Figure 1 by the outer micrometer head of rotary laser lid, can realize laser generation quickly and easily, after restoring prism once more, just be not difficult to have realized locked mode.
Two drift angles are that 69 ° quartz prism 10,11 is that Brewster's angle is placed, and place on the adjusting bracket and translation stage of scalable pitching and angle, the wherein translation stage of prism 10 design electing vertical adjusting as, move horizontally, its micrometer head extends to outside the laser oscillator loam cake, so that under the situation of not opening device outer case, can only realize the startup and the pulse-width regulated of locked mode by rotating micrometer head.Change long arm end and insert quartz prism can change laser to 10,11 the degree of depth output pulse width.
Regulate level crossing 8 and 9 incident light rays is returned along former road, then can realize the continuous oscillation of titanium precious stone laser.
Further optimize the relative position of concave mirror 3,4 and the focal position in the crystal, that is: making the relative distance of concave mirror 3,4 is 10.5 ~ 11cm (allowing small difference, because the centre wavelength difference of issuable mode locking pulse).The distance that crystal 2 and concave mirror are 3,4 is than the inverse ratio that is the length brachium.Above-mentioned steps is the cavity shape structure of regulating resonant cavity, makes oscillator near locked mode district (hot spot of this moment presents strip and flashes shakiness), under the Kerr effect in crystal and the acting in conjunction of corresponding cavity structure, just can realize that locked mode has turned round.Laser is from the jump to locked mode can be by means of laterally moving of prism 10 realized continuously.
Whole laser generation light path is 5cm apart from the height of base plate.
The laser pulse of output is after device 12 reflections of climbing, improving about 10mm also reflects in the laser cavity top along the position that is parallel to oscillation light from half outgoing mirror 9, through three low- angle level crossings 5,6,7 again after the transmission of secondary reflection and two prisms 10,11, output to outside the Laser Devices by gold-plated mirror 13 reflections, reach the space dispersive strict compensation of output pulse width.
In order to produce as far as possible short light pulse, the utility model adopts a quartz prism to 10,11 chromatic dispersions that compensate laser crystal.According to the thickness of employing crystal, calculating can get the full remuneration that can realize when distance between the two prisms is 54cm (the right distance of prism can calculate by relevant document, books) crystalline dispersion, and the short pulse duration of being exported is 18 femtoseconds only.Regulate the degree of the insertion light path of two prisms, then can change the laser output pulse width easily.
Because the utility model adopts prism to the chromatic dispersion compensation technique,, avoided the shortcoming of (Femtolasers Produktions GmbH company product) locked mode startup difficulty in the chirped mirror scheme in conjunction with the practical design of its translation stage.
All femtosecond laser products only can be exported from an end at present.The utility model can be selected output easily as required owing to adopted the mirror return technique of climbing, and realizes that the two ends of femtosecond pulse are exported respectively, thereby satisfies the requirement of using, studying.The specific implementation process is: when wishing femtosecond pulse when galianconism end (no chromatic dispersion end) is exported, adopt 9 as the plane total reflective mirror, 8 as flat output mirror; When wishing that femtosecond pulse is from long arm end (chromatic dispersion end, that right end of prism is promptly arranged) when exporting, except that 8 as the total reflective mirror of plane, adopt the semicircle eyeglass as 9 of flat output mirror, outside the chamber, adopt the mirror 12 of climbing again, after mirror 12 reflections of climbing, femtosecond pulse will return prism 11, level crossing 7,6 and prism 10 by the top of half plate plane outgoing mirror 9 abreast along the vibration optical path direction like this, at last by the gold-plated mirror 13 reflection outputs that are positioned at vibration light path top.This design is compared with the method that adds at present a pair of symmetric prisms outside the chamber again, not only saved space (only needing a pair of prism), therefore and because compensation light is parallel with oscillation light, back and forth insertion amount is identical in prism, thereby has guaranteed space dispersive strict the compensation automatically.
Laser oscillator by above-mentioned design, installation gained is measured the pulsewidth curve that can get as shown in Figure 2 through autocorrelation function analyzer.
Output laser pulse width of the present utility model is narrow, short pulse duration is 18 femtoseconds only, this not only is much better than the like product of the Time-Bandwidth company (all greater than 100 femtoseconds) of S-P company (greater than 35 femtoseconds), relevant company and Switzerland, and also be only second to unique device that the Austrian Femtolasers Produktions GmbH company (the shortest 12 femtoseconds) that is shorter than 20 femtosecond products is provided at present, and pulsewidth is upwards adjustable continuously from 18 femtoseconds; Average output power is greater than 500mW.Overall structure compact of the present utility model, only about 600 * 200 * 150mm of volume, though its output pulse width is slightly poorer than the product of Austrian FemtolasersProduktions GmbH company, but its volume only is about half of the said firm's product, be 3-4/one of the product of S-P company, relevant company, so the utility model is easy to use.At present the power output of several prods under the 5W pumping is many between 200-300mW, and the utility model is under the full curing 532nm laser pumping of same power, and its locked mode average output power is greater than 500mW.The femtosecond laser product is usually owing to include prism (or chirped mirror) in the chamber, all multicomponents such as speculum, therefore first the installation, or depart from the vibration position for a certain reason need debug again the time, often complicated time-consuming, output stomidium when the utility model makes the long-armed extended line of laser do output by the galianconism end in design, make first and install or when debugging laser generation again, only need to make prism 10 exit opticals by the outer micrometer head of rotary laser lid, and on the long-armed extended line in device outside, put a total reflective mirror, can realize laser generation quickly and easily, and then after restoring insertion prism 10 again, just be not difficult to have realized locked mode, thereby guaranteed the convenience and the reliability of device.The utility model is owing to adopt the whole nation to produce element, and used dispersive compensation element is the quartz prism of standard, thus cost low, be easy to the duplication of production assembling.The utility model also has two-way output, automatic advantage such as compensation space chromatic dispersion, has wide application prospect, is one of best product device of combination property in the like product in the world at present.
Below in conjunction with drawings and Examples the utility model is elaborated:
Fig. 1 is the utility model principle assumption diagram,
The shortest laser pulse width curve that Fig. 2 records for the utility model,
Fig. 3 is that figure is implemented in concrete installation of the present utility model,
Embodiment 1:
As shown in Figure 3, wherein each element is corresponding with Fig. 1, all is installed on the base plate that is of a size of 550 * 200mm, and concrete parameter and installation requirement that element is selected are as follows:
The focal length of condenser lens 1 is 10cm, and bore is 2cm, and places on the adjusting bracket and translation stage of scalable lifting and position, the left and right sides.Laser crystal 2 is of a size of 4 * 4 * 5mm for the ti sapphire crystal of Brewster's angle cutting, places on the adjusting bracket and translation stage of scalable pitching and angle.The radius of curvature of plano-concave speculum 3,4 is 100mm, and bore is 12.7mm, and thickness is 6mm, and material is a K9 glass, and its relative distance is about 105mm; Wherein 3 as the pumping mirror, and concave surface is coated with double-colored deielectric-coating anti-reflection to 532nm and that 700 ~ 900nm is all-trans, and the back side is coated with the anti-reflection film of 532nm pump light, places on the adjustable micropositioning stage of bidimensional; And the plating of 4 concave surface places on adjustable micropositioning stage of bidimensional and the translation guide rail the broadband deielectric-coating that 700 ~ 900nm wave band is all-trans.Laser crystal 2 is positioned on the central point of two mirrors 3,4.The position adjustments of condenser lens 1 guarantees that pump light just focuses on the laser crystal center, its with pumping mirror 3 apart from about 6cm.The be all-trans substrate of level crossing 5,6,7 of broadband under the low-angle incident is bore 25.4mm, and the K9 glass of thickness 4mm is coated with the broadband deielectric-coating that under 3 ~ 10 ° of incidence angles 700 ~ 900nm is all-trans, and places respectively on the adjustable micropositioning stage of bidimensional.After their position need guarantee to add 8,9 mirrors, the ratio of resonant cavity two brachiums was 110: 70cm.The substrate of plane total reflective mirror 8 is bore 25.4mm, and the K9 glass of thickness 4mm is coated with the broadband deielectric-coating that under the vertical incidence 700 ~ 900nm is all-trans, and places on the adjustable micropositioning stage of bidimensional.Flat output mirror 9 is bore 25.4mm, and the fused quartz substrate of half sheet of thickness 2mm cutting is coated with under the vertical incidence in 750 ~ 850nm wave band transmitance and is 10% deielectric-coating, places on the adjustable micropositioning stage of bidimensional.The quartz prism 10,11 of two Brewster's angle cuttings is pressed Brewster's angle and is placed, drift angle is 69 °, base size and highly be 2cm, place on the adjusting bracket and translation stage of scalable pitching and angle, the wherein translation stage of prism 10 design electing vertical adjusting as, move horizontally, its micrometer head extends to outside the laser loam cake.8 galianconism distance is about 70cm from concave mirror 4 to total reflective mirror, and the long-armed distance from concave surface pumping mirror 3 to outgoing mirror 9 is about 110cm, and it is right that wherein long arm end inserts quartz prism, and the relative distance that prism is 10,11 is 54cm.Delivery outlet when the extended line of laser long-armed (prism end) is done output by the galianconism end, install or when debugging laser generation again first like this, only need to make first prism exit optical by the outer micrometer head of rotary laser lid, and on the long-armed extended line in device outside, put a total reflective mirror, can realize laser generation quickly and easily, and then behind the recovery prism, just be not difficult to have realized locked mode.The device 12 of climbing of two vertical compositions of level crossing is the broadband deielectric-coating that 700 ~ 900nm of 45 ° of incidents is all-trans, after the laser pulse of output reflects via the device of climbing, also reflect in the laser cavity top along the position that is parallel to oscillation light from half outgoing mirror 9 improving about 10mm.Gold-plated mirror 13 is of a size of 20 * 20mm, place on the bidimensional micropositioning stage of laser generation light path top 5mm, the output laser pulse that is parallel to oscillating laser is after the secondary reflection again of three low- angle level crossings 5,6,7 and prism are to 10,11 transmission, meet gold-plated mirror 13 reflections and output to outside the Laser Devices, reach the space dispersive strict compensation of output pulse width.Whole laser generation light path is 5cm apart from the height of base plate.
Embodiment 2:
The concrete parameter of each element and installation are as embodiment 1, but the device of climbing is selected the gold-plated mirror of size 20 * 20mm, makes femto-second solid laser oscillator.
Embodiment 3:
The concrete parameter of each element and installation are as embodiment 1.But 9 to be the plane total reflective mirror, get bore 25.4mm, the K9 glass substrate of thickness 4mm is coated with the broadband deielectric-coating that under the vertical incidence 700 ~ 900nm is all-trans; 8 to be flat output mirror, get bore 25.4mm, the fused quartz substrate of thickness 2mm is coated with under the vertical incidence in 750 ~ 850nm wave band transmitance and is 10% deielectric-coating.Cancel climb device 12 and gold-plated mirror 13 this moment.
Claims (4)
1. miniaturized femto-second solid laser oscillator, it is characterized in that: comprise a condenser lens (1), a laser crystal (2), two plano-concave speculums (3), (4), three low-angle broadband total reflective mirrors (5), (6), (7), a vertical broadband total reflective mirror (8), a flat output mirror (9), two quartz prisms (10), (11), the mirror of climbing (12), a gold-plated mirror (13) and a base plate;
The concrete parameter of element is as follows: base plate is of a size of 550 * 200mm, the focal length of condenser lens (1) is 8 ~ 13cm, laser crystal (2) is the ti sapphire crystal of Brewster's angle cutting, be of a size of 4 * 4 * 5mm, plano-concave speculum (3), (4) be radius of curvature 100mm, bore 12.7mm, the K9 glass of thickness 6mm, wherein the concave surface of speculum (3) is coated with double-colored deielectric-coating anti-reflection to 532nm and that 700 ~ 900nm is all-trans, the back side is coated with the anti-reflection film of 532nm pump light, the concave surface of speculum (4) is coated with the broadband deielectric-coating that 700 ~ 900nm wave band is all-trans, low-angle broadband total reflective mirror (5), (6), (7) be the K9 glass substrate of thickness 4mm, be coated with the broadband deielectric-coating that under 3 ~ 10 ° of incidence angles 700 ~ 900nm is all-trans, plane total reflective mirror (8) is the K9 glass substrate of thickness 4mm, be coated with the broadband deielectric-coating that under the vertical incidence 700 ~ 900nm is all-trans, flat output mirror (9) is thickness 2mm, the fused quartz substrate of half sheet cutting, be coated with under the vertical incidence in 750 ~ 850nm wave band transmitance and be 10% deielectric-coating, prism (10), (11) quartz prism that cuts for Brewster's angle, prism to relative distance be 54cm, two vertical devices of forming of climbing (12) of level crossing are the gold-plated mirror of size 20 * 20mm, and gold-plated mirror (13) is of a size of 20 * 20mm;
All element is installed on the base plate, concrete installation requirement: condenser lens (1) is placed on the adjusting bracket of scalable lifting and position, the left and right sides, and adjusting bracket is placed on the translation stage of 40 * 40mm, speculum (3) is positioned on the adjustable micropositioning stage of bidimensional, and speculum (4) is positioned on adjustable micropositioning stage of bidimensional and the translation guide rail, plano-concave mirror (3), (4) be fixed on the translation stage of 40 * 40mm together with micropositioning stage, laser crystal (2) is positioned on the crystal adjusting bracket and horizontal rotating table of scalable pitching and angle, the water-cooled circulation is inserted with rubber tube in the two ends of adjusting bracket, rotating crystal is placed on the confocal point of plano-concave speculum (3) and (4) with Brewster's angle, the position adjustments of condenser lens (1) guarantees that pumping laser just focuses on the germ nucleus, plane total reflective mirror (8) and flat output mirror (9) are placed respectively on the adjustable micropositioning stage of bidimensional, galianconism distance from concave mirror (4) to total reflective mirror (8) is about 73cm, long-armed distance from concave mirror (3) to outgoing mirror (9) is 100cm, total reflective mirror (5), (6), (7) place respectively on the adjustable micropositioning stage of bidimensional, resonant cavity is formed in speculum (3) ~ (9), total reflective mirror (5), (6), (7) position determines to guarantee that resonant cavity two brachiums are respectively 100cm and 73cm, the device (12) of climbing places outgoing mirror (9) afterwards, and gold-plated mirror (13) places on the bidimensional micropositioning stage of laser generation light path top 5mm; Two drift angles are that 69 ° quartz prism (10), (11) are placed and this quartz prism are opposite on the adjusting bracket and translation stage of scalable pitching and angle for Brewster's angle, the wherein translation stage of prism (10) design electing vertical adjusting as, move horizontally, its micrometer head extends to outside the laser oscillator loam cake; Regulating level crossing (8) and (9) makes incident light rays return along former road; The relative distance that makes concave mirror (3), (4) is 10.5 ~ 11cm;
Whole laser generation light path is 5cm apart from the height of base plate.
2. by the described miniaturized femto-second solid laser oscillator of claim 1, it is characterized in that: the broadband deielectric-coating that the device of climbing (12) can also be all-trans for 700 ~ 900nm of 45 ° of incidents.
3. by the described miniaturized femto-second solid laser oscillator of claim 1, it is characterized in that: all right (8) then are the broadband total reflective mirror as flat output mirror this moment (9).
4. by the described miniaturized femto-second solid laser oscillator of claim 1, it is characterized in that: need not climb mirror (12) and gold-plated mirror (13).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01219130 CN2490740Y (en) | 2001-04-09 | 2001-04-09 | Miniaturized solid flying-second laser oscillator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01219130 CN2490740Y (en) | 2001-04-09 | 2001-04-09 | Miniaturized solid flying-second laser oscillator |
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| CN2490740Y true CN2490740Y (en) | 2002-05-08 |
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| CN 01219130 Expired - Fee Related CN2490740Y (en) | 2001-04-09 | 2001-04-09 | Miniaturized solid flying-second laser oscillator |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100384037C (en) * | 2002-05-17 | 2008-04-23 | 费姆托激光产品股份有限公司 | Short-pulse laser device with a preferably passive mode coupling and multiple reflection telescope therefor |
| CN101950069A (en) * | 2010-08-25 | 2011-01-19 | 中国科学院物理研究所 | Light path time-delay device |
| CN102570258A (en) * | 2011-02-25 | 2012-07-11 | 北京国科世纪激光技术有限公司 | Laser resonator cavity |
| CN104577650A (en) * | 2015-01-21 | 2015-04-29 | 大恒光电科技发展(北京)有限公司 | Method for installing and debugging femtosecond laser oscillator |
-
2001
- 2001-04-09 CN CN 01219130 patent/CN2490740Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100384037C (en) * | 2002-05-17 | 2008-04-23 | 费姆托激光产品股份有限公司 | Short-pulse laser device with a preferably passive mode coupling and multiple reflection telescope therefor |
| CN101950069A (en) * | 2010-08-25 | 2011-01-19 | 中国科学院物理研究所 | Light path time-delay device |
| CN102570258A (en) * | 2011-02-25 | 2012-07-11 | 北京国科世纪激光技术有限公司 | Laser resonator cavity |
| CN104577650A (en) * | 2015-01-21 | 2015-04-29 | 大恒光电科技发展(北京)有限公司 | Method for installing and debugging femtosecond laser oscillator |
| CN104577650B (en) * | 2015-01-21 | 2018-07-06 | 大恒新纪元科技股份有限公司 | A kind of Method of Adjustment of femtosecond laser oscillator |
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| 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 |