Tanthauzo
Ultrafast laser ndi mtundu wa Ultra-intense ultra-short pulsed laser yokhala ndi pulse m'lifupi kuposa kapena mkati mwa mulingo wa pico2nd (10-12s), womwe umatanthauzidwa kutengera mawonekedwe amphamvu amagetsi. Kutanthauzira uku kumagwirizana ndi "ultrafast phenomena". Ultrafast phenomenon imatanthawuza chodabwitsa chomwe chimachitika m'thupi, mankhwala kapena chilengedwe chomwe chimasintha mofulumira mu microscopic system of matter. Mu dongosolo la atomiki ndi mamolekyu, kukula kwa nthawi kwakuyenda kwa ma atomu ndi mamolekyu kuli pa dongosolo la picoseconds kupita ku femtoseconds. Mwachitsanzo, nthawi ya kusinthasintha kwa maselo ili pa dongosolo la picoseconds, ndipo nthawi ya kugwedezeka ili pa dongosolo la femtoseconds. Kuthamanga kwa laser kukafika pamlingo wa pico2nd kapena femtosecond, kumatha kupewa kutengera kutentha kwa mamolekyu (kusuntha kwa mamolekyu ndikofunika kwambiri kwa kutentha kwa zinthu), ndipo zinthuzo zimapangidwa pamlingo wanthawi ya kugwedezeka kwa maselo. Chikoka, kotero kuti pamene kukwaniritsa cholinga processing, zotsatira matenthedwe kwambiri yafupika.
mitundu
Pali njira zambiri zogawira ma lasers, mwa omwe pali njira 4 zomwe zimagwiritsidwa ntchito kwambiri, kuphatikiza kugawa ndi zinthu zomwe zimagwira ntchito, kugawa ndi mphamvu zotulutsa mphamvu (njira yogwirira ntchito), kugawa ndi kutalika kwa mawonekedwe (mtundu), komanso kugawa ndi mphamvu.
Mwa iwo, malinga ndi mphamvu linanena bungwe waveform, lasers akhoza kugawidwa mu lasers mosalekeza, pulsed lasers, ndi lasers kopitilira muyeso:
Laser mosalekeza
Ndi laser yomwe imatulutsa mosalekeza mafunde amphamvu okhazikika panthawi yogwira ntchito. Amadziwika ndi mphamvu zambiri ndipo amatha kukonza zinthu zokhala ndi voliyumu yayikulu komanso malo osungunuka kwambiri, monga mbale zachitsulo.
Pulsed Laser
Zimatulutsa mphamvu mu mawonekedwe a pulses. Malingana ndi kukula kwa pulse, ikhoza kugawidwanso kukhala ma lasers milli2nd, lasers micro2nd, nano2nd shutdown zipangizo, pico2nd lasers, femto2nd lasers, ndi atto2nd lasers; mwachitsanzo, ngati laser pulse The pulse width ya laser linanena bungwe ndi pakati 1-1000ns, amene timatcha nano2nd lasers, ndi zina zotero. Timatcha pico2nd lasers, femto2nd lasers, atto2nd lasers, ndi ultrafast lasers. Mphamvu ya laser pulsed ndi yotsika kwambiri kuposa ya laser yopitilira, koma kulondola kwapang'onopang'ono ndikwapamwamba kuposa kwa laser yopitilira, ndipo kawirikawiri, kuchepera kwa kugunda m'lifupi, kumapangitsa kulondola kwapang'onopang'ono.
Laser ya Quasi-CW
Imatha kutulutsa mobwerezabwereza laser yamphamvu kwambiri mkati mwa nthawi inayake, komanso ndi laser pulse in theory.
Mawonekedwe amphamvu a ma lasers atatu omwe ali pamwambapa amathanso kufotokozedwa ndi "duty cycle". Kwa laser, kuzungulira kwa ntchito kumatha kutanthauziridwa ngati chiŵerengero cha nthawi ya mphamvu ya laser yokhudzana ndi nthawi yonse mkati mwa kuzungulira kwa pulse.
CW laser duty cycle (=1) > quasi-CW laser duty cycle > pulsed laser duty cycle. Nthawi zambiri, kuchepera kwa kugunda kwa laser pulsed, kumachepetsa kuzungulira kwa ntchito.
Pankhani yokonza zinthu, ma pulsed lasers poyamba anali chinthu chosinthika cha ma lasers opitilira. Izi ndichifukwa choti mphamvu yotulutsa ma lasers osalekeza sangakhale okwera kwambiri chifukwa cha chikoka cha zinthu monga kunyamula mphamvu zamagulu apakati komanso kuchuluka kwaukadaulo koyambirira, ndipo zinthu sizingatenthedwe mpaka kusungunuka. Zomwe zili pamwambazi zimakwaniritsa cholinga cha kukonza. Ngati njira zina zaumisiri zimagwiritsidwa ntchito kuyika mphamvu ya laser pamtundu umodzi, kotero kuti ngakhale mphamvu yonse ya laser sikusintha, mphamvu yanthawi yomweyo pa nthawi ya kugunda imakula kwambiri, yomwe imakwaniritsa zofunikira pakukonza zinthu. Kenako, mosalekeza luso laser pang'onopang'ono kukhwima, ndipo anapeza kuti pulsed laser ali ndi mwayi waukulu processing olondola. Izi ndichifukwa choti matenthedwe a laser pulsed pazipangizo ndi ocheperako, ndipo kuchepera kwa kugunda kwa laser, kumachepetsa mphamvu yamafuta, komanso m'mphepete mwazinthu zomwe zidakonzedwa, kulondola kofananirako ndikokwera kwambiri.
zigawo
2 zofunika kwambiri za lasers ultrafast: kukhazikika kwapamwamba kwa ultrashort pulse ndi mphamvu yamphamvu kwambiri. Nthawi zambiri, ma ultrashort pulses amatha kupezedwa pogwiritsa ntchito ukadaulo wotseka, ndipo mphamvu yayikulu imatha kupezeka pogwiritsa ntchito ukadaulo wa CPA wokulitsa. Zina mwazinthu zomwe zimakhudzidwa ndi ma oscillator, ma stretchers, amplifiers, ndi compressor. Pakati pawo, ukadaulo wa oscillator ndi amplifier ndizovuta kwambiri, komanso ndiukadaulo woyambira wamakampani opanga ma laser.
Oscillator
Mu oscillator, ma ultrafast laser pulses amapezeka pogwiritsa ntchito njira yotsekera.
Wodula
Machira amatambasula mbewu za femto2nd motalikirana nthawi ndi mafunde osiyanasiyana.
Amplifier
Chokulitsa chokulirapo chimagwiritsidwa ntchito kupatsa mphamvu kugunda kotambasuka uku.
kompresa
Compressor imabweretsa pamodzi mawonekedwe okulirapo a zigawo zosiyanasiyana ndikuzibwezeretsanso ku femto2nd m'lifupi, motero kupanga femto2nd laser pulses ndi mphamvu yokwera kwambiri nthawi yomweyo.
Mapulogalamu
Poyerekeza ndi ma lasers a nano2nd ndi milli2nd, ngakhale mphamvu yonse ya ma lasers othamanga kwambiri ndi otsika, chifukwa imagwira ntchito mwachindunji pa nthawi ya kugwedezeka kwa ma cell, imazindikira "kuzizira kozizira" m'lingaliro lenileni, kotero kulondola kwa makonzedwe kumakhala bwino kwambiri.
Chifukwa cha mawonekedwe osiyanasiyana, ma lasers opitilira mphamvu kwambiri, ma laser osathamanga kwambiri komanso ma ultrafast lasers ali ndi kusiyana kwakukulu m'magawo ogwiritsira ntchito pansi:
Ma lasers opitilira mphamvu kwambiri (ndi ma quasi-continuous lasers) amagwiritsidwa ntchito podula, sintering, kuwotcherera, kuphimba pamwamba, kubowola, 3D kusindikiza zinthu zachitsulo.
Non-ultrafast pulsed lasers amagwiritsidwa ntchito polemba zinthu zopanda zitsulo, kukonza zida za silicon, cholemba molondola wa zitsulo pamwamba, kuyeretsa zitsulo pamwamba, kuwotcherera mwatsatanetsatane zitsulo, micromachining zitsulo.
Ma lasers a Ultrafast amagwiritsidwa ntchito podula ndi kuwotcherera zinthu zowonekera monga galasi, PET ndi safiro ndi zida zolimba komanso zowonongeka, kulemba molondola, opaleshoni ya ophthalmic, passivation ya microscopic ndi etching ya zipangizo.
Potengera kagwiritsidwe ntchito, ma laser amphamvu kwambiri a CW ndi ma ultrafast lasers alibe pafupifupi mgwirizano wolowa m'malo. Iwo ali ngati nkhwangwa ndi tweezers, ndipo makulidwe awo ali ndi ubwino ndi kuipa. Kugwiritsa ntchito ma lasers omwe si a ultrafast pulsed lasers kumaphatikizana ndi ma laser osalekeza ndi ma ultrafast lasers. Kuchokera pazotsatira zenizeni, pansi pakugwiritsa ntchito komweko, mphamvu zake sizili zabwino ngati za ma lasers osalekeza, ndipo kulondola kwake sikuli kofanana ndi kwa ma lasers a ultrafast. Chodziwika kwambiri ndi kukwera mtengo.
Makamaka laser ya nano2nd ultraviolet, ngakhale kuti kugunda kwake sikufika pamlingo wa pico2nd, koma kulondola kwa kukonza kumakhala bwino kwambiri poyerekeza ndi mitundu ina ya nano2nd lasers, yakhala ikugwiritsidwa ntchito kwambiri pokonza ndi kupanga zinthu za 3C. M'tsogolomu, pamene mtengo wa ma lasers othamanga kwambiri ukuchepa, ukhoza kutenga msika wa nano2nd ultraviolet.
Ma lasers a Ultrafast amazindikira kuzizira kwenikweni ndipo amakhala ndi zabwino zambiri pakukonza molondola. Pamene teknoloji yopanga ma lasers a ultrafast imakhwima pang'onopang'ono, mtengowo umachepa pang'onopang'ono. M'tsogolomu, akuyembekezeka kugwiritsidwa ntchito kwambiri mu biology yachipatala, ndege, zamagetsi ogula, zowonetsera zowunikira, chilengedwe cha mphamvu, makina olondola ndi mafakitale ena akumunsi.
Cosmetology Yachipatala
Ma lasers a Ultrafast angagwiritsidwe ntchito mu zida zachipatala za opaleshoni ya maso ndi zida zodzikongoletsera. Femto2nd laser imagwiritsidwa ntchito popanga opaleshoni ya myopia ndipo imadziwika kuti "kusintha kwina kwa opaleshoni ya refractive" pambuyo paukadaulo wa wavefront aberration. Diso olamulira a myopic odwala ndi lalikulu kuposa yachibadwa diso olamulira, kotero kuti mu mkhalidwe diso chisangalalo, cholinga cha kufanana kuwala kunyezimira pambuyo refraction ndi diso refractive dongosolo imagwera kutsogolo kwa retina. Opaleshoni ya laser ya Femto2nd imatha kuchotsa minofu yambiri mu gawo la axial ndikubwezeretsa mtunda wa axial kukhala wabwinobwino. Opaleshoni ya laser ya Femto2nd ili ndi ubwino wolondola kwambiri, chitetezo chapamwamba, kukhazikika kwapamwamba, nthawi yochepa ya opaleshoni, komanso chitonthozo chachikulu, ndipo yakhala imodzi mwa njira zodziwika bwino za opaleshoni ya myopia.
Pankhani ya kukongola, ma lasers othamanga kwambiri amatha kugwiritsidwa ntchito kuchotsa pigment ndi timadontho ta mbadwa, kuchotsa ma tattoo, ndikuwongolera ukalamba wa khungu.
ogula Electronics
Ma lasers a Ultrafast ndi oyenera kuwongolera zinthu zowoneka bwino komanso zowoneka bwino, kukonza filimu yopyapyala, kulemba molondola, ndi zina zambiri popanga zida zamagetsi zamagetsi. Magalasi otsekemera a foni yam'manja ndi safiro ndizoyimira zolimba, zowonongeka komanso zowonekera muzinthu zamagetsi zamagetsi, makamaka safiro, chifukwa cha kuuma kwake kwakukulu ndi kuphulika kwakukulu, mphamvu ndi zokolola za njira zopangira makina ndizochepa kwambiri; safiro tsopano imagwiritsidwa ntchito kwambiri Imagwiritsidwa ntchito kwambiri mu mawotchi anzeru, zophimba za kamera ya foni yam'manja, zovundikira zala zala, ndi zina zambiri; laser nano2nd ultraviolet laser ndi ultrafast laser ndiye njira yayikulu yodulira safiro pakadali pano, ndipo mphamvu yopangira laser ya Ultrafast ndiyabwino kuposa ya ultraviolet nano2nd laser. Kuphatikiza apo, njira zogwirira ntchito zomwe zimagwiritsidwa ntchito ndi ma module a kamera ndi ma module a chala ndi ma nano2nd ndi pico2nd lasers. Kwa kudula kwa zowonetsera zosinthika za foni yam'manja (zojambula zojambulidwa) ndi zofananira 3D Kubowola magalasi m'tsogolomu, ukadaulo wodziwika bwino ukhoza kukhala ma lasers othamanga kwambiri.
Ma lasers a Ultrafast amakhalanso ndi ntchito zofunika pakupanga magulu. Ma lasers a Ultrafast amatha kugwiritsidwa ntchito podula ma polarizer a OLED, kusenda ndi kukonza panthawi yopanga LCD/OLED.
Kwa OLED, zida zake za polima zimakhudzidwa kwambiri ndi kutentha. Kuonjezera apo, kukula ndi kusiyana kwa maselo omwe amapangidwa panopa ndi ochepa kwambiri, ndipo kukula kotsalira kotsalira kumakhala kochepa kwambiri. Njira yachikhalidwe yodula kufa ngati kale siyeneranso masiku ano. Zofunikira zamakampani, ndipo tsopano pali zofunikira zogwiritsira ntchito zowonetsera zowoneka mwapadera ndi zowonekera, zomwe sizingathe kuchita zaluso zachikhalidwe. Mwanjira iyi, phindu la ma lasers a ultrafast likuwonekera, makamaka ma laser a pico2nd ultraviolet kapena femto2nd, omwe ali ndi kagawo kakang'ono kokhudzidwa ndi kutentha ndipo ali oyenera kugwiritsa ntchito zosinthika zambiri monga kukonza ma curve.
Kuwotcherera kwa Micro
Pazinthu zowoneka bwino zolimba monga galasi, zochitika zosiyanasiyana monga kuyamwa kosagwirizana, kuwonongeka kosungunuka, mapangidwe a plasma, ablation, ndi kufalikira kwa fiber zidzachitika pamene ultrashort pulse laser imafalikira pakati. Chithunzichi chikuwonetsa zochitika zosiyanasiyana zomwe zimachitika polumikizana pakati pa ultrashort pulse laser ndi zinthu zolimba pansi pa kachulukidwe ka mphamvu zosiyanasiyana ndi masikelo anthawi.
Chifukwa ultra-short pulse laser micro-wowotcherera ukadaulo safunikira kuyika wosanjikiza wapakatikati, imakhala yogwira ntchito kwambiri, yolondola kwambiri, yopanda matenthedwe amtundu wa macroscopic, ndipo imakhala ndi mawonekedwe owoneka bwino pamakina pambuyo pa kuwotcherera yaying'ono, ndikoyenera kwambiri kuwotcherera yaying'ono kwa zinthu zowonekera monga galasi. Mwachitsanzo, ofufuza atha kuwotcherera zisoti zomaliza kukhala ulusi wamba komanso wopangidwa ndi microstructured pogwiritsa ntchito 70 fs, 250 kHz pulses.
Onetsani Kuwala
Kugwiritsa ntchito ma lasers othamanga kwambiri powunikira zowunikira makamaka kumatanthawuza kulemba ndi kudula kwa ma wafer a LED. Ichi ndi chitsanzo china cha lasers ultrafast kukhala yoyenera kukonza zinthu zolimba komanso zosalimba. Ultrafast laser processing ali mkulu mtanda gawo flatness ndi kwambiri yafupika m'mphepete chipping. Kuchita bwino ndi kulondola kumawongoleredwa kwambiri.
Mphamvu ya Photovoltaic
Ma lasers a Ultrafast ali ndi malo ambiri ogwiritsira ntchito popanga ma cell a photovoltaic. Mwachitsanzo, popanga mabatire a CIGS, ma ultrafast lasers amatha kulowa m'malo mwa njira yolembera yamakina ndikusintha kwambiri ma scribing, makamaka maulalo olembera a P2 ndi P3, omwe amatha kukwaniritsa pafupifupi palibe ming'alu komanso kupsinjika kotsalira.
Kupatula
Pofuna kupititsa patsogolo ntchito ndi moyo utumiki wa masamba chopangira magetsi, ndiyeno kusintha ntchito ya injini, m'pofunika kutengera mpweya filimu kuzirala luso, amene amaika patsogolo kwambiri zofunika pa mpweya filimu dzenje processing luso. Mu 2018, Xi'an Institute of Optics and Mechanics idapanga mphamvu yayikulu kwambiri ku China. Laser ya 26-watt-grade femto2nd fiber laser, ndipo idapanga zida zopangira zida zothamanga kwambiri, idakwanitsa "kukonza kozizira" kwamabowo amafilimu am'mlengalenga muzitsulo za injini ya aero-injini, ndikudzaza mpata wapakhomo. Njira yopangira iyi ndi yapamwamba kwambiri kuposa EDM Kulondola kwa njirayi ndikwapamwamba, ndipo chiwerengero cha zokolola chimakhala bwino kwambiri.
Ma lasers a Ultrafast angagwiritsidwenso ntchito pakupanga makina olondola azinthu zophatikizika ndi ulusi, komanso kukonza makina olondola kumathandizira kukulitsa kugwiritsa ntchito zida zophatikizika monga mpweya wa kaboni mumlengalenga ndi madera ena apamwamba.
Research Field
2-photon polymerization technology (2PP) ndi "nano-optical" 3D Njira yosindikizira, yofanana ndi ukadaulo wochiritsa mwachangu, ndipo katswiri wamtsogolo Christopher Barnatt amakhulupirira kuti ukadaulo uwu ukhoza kukhala njira yodziwika bwino 3D kusindikiza m'tsogolomu. Mfundo yaukadaulo wa 2-photon polymerization ndikusankha kuchiza utomoni wa photosensitive pogwiritsa ntchito "femto2nd pulse laser". Zikumveka ngati kujambula ma prototyping mwachangu, kusiyana kwake ndikuti makulidwe ochepa osanjikiza ndi XY axis resolution yomwe ukadaulo wa 2-photon polymerization ungathe kukwaniritsa ndipakati pa 100 nm ndi 200 nm. M'mawu ena, 2PP 3D umisiri wosindikizira ndi wolondola kambirimbiri kuposa umisiri wamakono woyatsira kuwala, ndipo zinthu zosindikizidwa ndizocheperapo kuposa mabakiteriya.
Pakali pano, mtengo wa lasers ultrafast akadali okwera mtengo. Monga mpainiya mu bizinesi, STYLECNC ikupanga kale zida zopangira ma laser ultrafast ndipo zapeza mayankho abwino amsika. Zida zodulira mwatsatanetsatane ma laser a ma module a OLED kutengera ukadaulo wa ultrafast laser, ultrafast (picosecond/femtosecond) zida zolembera ma laser, zida zopangira magalasi zopangira ma pico2nd infrared display screen, ndi pico2nd infrared glass wafers zakhazikitsidwa zida zodulira laser, makina odulira a LED osawoneka, semiconductor makina osawoneka bwino. makina opangira laser, zida zodulira chivundikiro chagalasi zamagawo ozindikiritsa zala, mizere yowonetsera yosinthika komanso zinthu zingapo za laser zothamanga kwambiri.
Ubwino & Zinthu
ubwino
Ultrafast laser ndi njira yofunika kwambiri yopititsira patsogolo gawo la laser. Monga teknoloji yomwe ikubwera, ili ndi ubwino wambiri mu micromachining yolondola. The ultra-short pulse yopangidwa ndi ultra-fast laser imagwirizana ndi zinthuzo kwa nthawi yochepa kwambiri, ndipo sichidzabweretsa kutentha kwa zipangizo zozungulira, kotero kuti laser yothamanga kwambiri imatchedwanso kuzizira. Izi ndichifukwa choti, kukula kwa kugunda kwa laser kukafika pamlingo wa pico2nd kapena femto2nd, kukopa kwa matenthedwe amtundu wa ma cell kumatha kupewedwa kwambiri, zomwe zimapangitsa kuti matenthedwe azichepa.
Mwachitsanzo, tikamadula mazira osungidwa ndi mpeni wosasunthika wa kukhichini, nthawi zambiri tinkadula mazirawo m’zidutswa tating’ono. Ngati mumasankha njira yodulira ndi mpeni wakuthwa kwambiri womwe umadula chisokonezo mwachangu, mazira osungidwa adzadulidwa mofanana komanso mokongola. Ndiwo mwayi wokhala wothamanga kwambiri.
kuipa
Makampani opanga zinthu zapamwamba kwambiri monga mabwalo ophatikizika ndi mapanelo ali ndi zofunika kwambiri pazida zopangira laser, ndipo pali chiwopsezo cha kupita patsogolo kwaukadaulo komwe sikungafanane ndi ziyembekezo.
Mtengo wa ma lasers othamanga kwambiri ndi wokwera kwambiri, ndipo kusinthira kwa wothandizira watsopano wa laser kuli ndi chiopsezo cholephera kukulitsa msika monga momwe zimayembekezeredwa kwa opanga zida za laser komanso ogwiritsa ntchito otsika kwambiri.
