Nrog rau txoj kev loj hlob sai ntawm laser technology, ultrafast laser tshwm nyob rau hauv tib neeg lub qhov muag. Nws muaj qhov tshwj xeeb ultrashort mem tes, super- cov yam ntxwv muaj zog, thiab tuaj yeem tau txais lub teeb pom kev siab siab nrog lub zog pulse tsawg. Cov tsos ntawm chirped pulse amplification (CPA) thev naus laus zis zoo heev txhim kho qhov siv ntawm ultrafast laser.
Sib txawv ntawm cov tsoos ntev -pulse laser thiab nruam laser, lub laser ultrafast muaj ib tug ultrashort laser pulse, uas ua rau lub spectrum dav ntawm lub laser mem tes loj heev. Xws li qhov dav spectrum muaj cov ntawv thov tseem ceeb hauv kev kawm txog qib atomic zog, laser bonding chemistry, thiab lwm yam.
Txhawm rau tso ultrafast tawm tsam lwm qhov chaw tseem ceeb, ntsuas qhovpros thiab cons ntawm ntau hom laser.
Raws li cov yam ntxwv ntawm ultrafast laser pulse, peb tuaj yeem siv lub twj tso kua mis - txoj kev sojntsuam los yees duab kev cuam tshuam ntawm laser mem tes thiab teeb meem ntawm lub sijhawm sib txawv, txhawm rau kom tau txais cov yam ntxwv ntawm tag nrho cov txheej txheem. Txoj kev no tau siv rau ntau qhov chaw, xws li hauv kev kawm ntawm atom thiab molecule cov tshuaj tiv thaiv dynamic thiab kev soj ntsuam ntawm electron motion, siv femtosecond laser pulse los yog attosecond pulse los soj ntsuam cov txheej txheem tshuaj tiv thaiv los ntawm lub twj tso kua mis - sojntsuam txoj kev.
Lub attosecond regime ntawm qhov kawg kawg yog them rau hauvattosecond pulsed laser daim ntaub ntawv.
Thaum lub ncov lub zog ceev ntawm lub tsom ultrafast laser yog ntau tshaj 1012w / cm2, lub zog siv hluav taws xob yog ntau dua li ntawm cov atom. Nws muab cov hluav taws xob muaj zog heev thiab tsis tshua muaj siab, uas tuaj yeem dhau qhov kev sib khi ntawm valence band electrons, ua rau lub tshuab hluav taws xob ntawm molecules thiab atoms hloov pauv zoo heev. Los ntawm kev siv cov cuab yeej no, peb tuaj yeem kawm txog cov xwm txheej tshwj xeeb hauv lub atom tshwm sim los ntawm ultrafast laser. Tsis tas li ntawd, lub laser ultrafast kuj qhia tau hais tias lwm cov yam ntxwv sib txawv, xws li me me tshav kub cuam tshuam cheeb tsam, cov nyhuv tuaj yeem tshaj qhov kev txwv qhov muag pom thiab cov yam ntxwv zoo heev ntawm qhov chaw xaiv.
Kev sib cuam tshuam ntawm ultrafast thiab super khaus laser pulses thiab qhov teeb meem yog ib qho kev tshawb fawb tseem ceeb tshaj plaws tam sim no. Nws muaj ntau yam kev siv nyob rau hauv cov particle accelerators tshiab, ultrafast high zog X-ray qhov chaw, thiab hais txog. Nyob rau tib lub sijhawm, nws muaj ntau yam theoretical thiab kev sim tshawb fawb cov ntsiab lus, suav nrog ntau ceg tseem ceeb ntawm physics, xws li laser physics, atomic thiab molecular physics, nonlinear optics, plasma physics, thermodynamics, thiab lwm yam.
Nrog rau kev txhim kho txuas ntxiv ntawm ultrashort laser pulse thev naus laus zis, siab - siv lub sijhawm luv luv ultrashort pulses tau raug tsim tawm sim, uas muab cov kev sim tsis tau pom dua thiab lub cev hnyav rau kev kawm txog kev cuam tshuam ntawm lub teeb thiab teeb meem, Nws tau qhib qhov kev tshawb fawb tshiab ntawm kev sib cuam tshuam ntawm lub teeb thiab qhov teeb meem, ua rau li - hu ua kev tshawb fawb tsis zoo ntawm optics, kev sib cuam tshuam ntawm optics thiab cov ntsiab lus zoo heev, nruab nrab ntawm laser thiab ntau yam teeb meem xws li atoms, molecules, ions, hluav taws xob pawg thiab plasmas mus rau qhov muaj zog teb ntau yam uas tsis yog-linear thiab relativity.
Nyob rau hauv cov txheej txheem ntawm kev sib cuam tshuam ntawm ultrafast super khaus laser thiab teeb meem, nrog rau kev txhim kho tas mus li ntawm laser siv, txhua yam ntawm nonlinear teebmeem yog nce, xws li siab - txiav txim harmonics, threshold ionization, tunneling ionization, thiab hais txog. Ntxiv mus, lub sij hawm luv luv ultrashort laser mem tes poob cov yam ntxwv tshwj xeeb ntawm lub sijhawm nthwv dej tshwm sim, uas ua rau muaj cov xwm txheej tshiab ntawm lub cev thiab cov cai. Nws muab cov cuab yeej sim tshiab rau kev tswj hwm kev sib koom ua ke, tsis muaj kab hluav taws xob optics, thiab kev tswj hwm ntawm SUBPERIODIC hluav taws xob yoj pob ntawv tshiab. Nws kuj tseem muab lub sijhawm ntsuas ntsuas lub sijhawm tshiab, attosecond, uas yuav muaj kev cuam tshuam tseem ceeb rau ntau yam kev qhuab qhia.
Nyob rau hauv nam ntawm cov ntaub ntawv ua, txij li thaum lub tsos ntawm ib tug ultrafast laser, vim hais tias ntawm nws ultrafast lub sij hawm thiab siab peak tus yam ntxwv, nws muaj peev xwm sai thiab meej mloog mus rau lub zog nyob rau hauv qhov kev txiav txim, thiab paub qhov tsis yog - kub yaj txias kev kho mob ntawm yuav luag tag nrho cov ntaub ntawv. Qhov zoo ntawm high precision thiab tsis tshua muaj kev puas tsuaj uas ib txwm laser tsis tuaj yeem sib tw tau. Cov txiaj ntsig tshwj xeeb ntawm microsecond laser tau siv dav hauv cov khoom siv microprocessing, nanostructure fabrication, photon li, siab - ceev cia, Kev Kho Mob Bioengineering, thiab lwm yam.
Ultra-kev tshawb fawb laser ceev yog ib qho tseem ceeb ntawm cov tub ntxhais kawm tshiab, uas yog nyob rau hmo ua ntej ntawm kev ua tiav loj. Nyob rau hauv xyoo tas los no, nrog rau kev tawg thiab kev lag luam ntawm siab -lub zog picosecond, femtosecond laser, thiab fiber ntau ultrafast laser tshuab, ultrafast laser tau txav los ntawm chav kuaj mus rau cov tswv yim kev lag luam thiab daim ntawv thov, dhau los ua cov kev taw qhia kub hauv kev kawm thiab kev lag luam laser.
Lub laser ultrafast tuaj yeem daws tau ntau yam teeb meem kev ua haujlwm uas nyuaj ua tiav los ntawm cov txheej txheem ib txwm ua, xws li siab, meej, ntse, nyuaj, nyuaj, thiab lwm yam, ua tiav cov peev txheej ua tau zoo, ua haujlwm zoo thiab ua haujlwm zoo, thiab tsim kom muaj txiaj ntsig zoo ntawm kev lag luam thiab kev sib raug zoo.
Nrog rau kev tshaj tawm thiab kev loj hlob ntawm "kev lag luam 4.0" thiab "ua nyob rau hauv Tuam Tshoj 2025" nyob rau hauv lub teb chaws Yelemees, qhov kev thov rau siab -kawg manufacturing, ntse manufacturing, thiab siab -precision manufacturing yuav nce loj nyob rau hauv lub neej yav tom ntej, thiab ultrafast laser thiab advanced micro-nano ua technology yuav coj nyob rau hauv tshiab lub sij hawm rau kev loj hlob sai. Nws tau kwv yees tias tag nrho cov lag luam ntim ntawm ultrafast laser yuav tshaj 1.5 billion US las los ntawm 2020.