Dab tsi yog cov yam ntxwv thiab kev siv ntawm Ultrashort Pulse Laser?

Ultrashort Pulse Lasersmuaj cov ntawv thov dav dav hauv kev kho mob thiab kev kaw lus kho qhov muag, thiab ntau daim ntawv thov tam sim no nyob rau hauv qhov kev sim ntawm kev ua tau zoo, suav nrog kev siv hauv kev tshawb fawb txog lub cev.

Lwm feature ntawm no technology yog qhov ntau ntawm pulses siv yog dav heev. Piv txwv li, nyob rau hauv cov ntaub ntawv kev sib txuas lus daim ntawv thov, lub ultra-high repetition zaus ntawm ib tug mem tes nrog me me zog (pJ theem) yog siab tshaj 100 GHz; Lub zog ntau ntawm cov qib ua haujlwm ntawm qhov siab rov ua dua; nyob rau hauv high-siv quantum science kev tshawb fawb daim ntaub ntawv, siab ncov siv nyob rau hauv lub petawatt (PW) theem yuav ua tau tiav nrog ib zaus pulses. Nyob rau hauv cov nqe lus ntawm wavelength, los ntawm kev hloov dua siab tshiab ntawm lub ultrashort mem tes laser tso zis wavelength, nws muaj peev xwm ua tiav los ntawm cov mos X-ray cheeb tsam ntawm ob peb nanometers mus rau THz mem tes sib npaug rau submillimeter tsis. Xav txog cov xwm txheej quo ntawm ultrashort mem tes lasers los ntawm daim ntawv thov kev pom, lawv tuaj yeem muab faib ua peb pawg hauv qab no.

(1) Lasers rau kev tshawb fawb lub cev. Qhov no yog daim teb ntawm daim ntawv thov ntawm thawj tsim ultrashort mem tes laser li. Vim tias daim ntawv thov no tsim ntau yam kev xav tau ntawm cov yam ntxwv ntawm cov mem tes, xws li wavelength, pulse duration, thiab pulse zog, ntau yam lasers nrog rau cov xim lasers thiab excimer lasers tuaj yeem siv. Nyob rau hauv cov ntaub ntawv ntawm kev them nyiaj mloog mus rau kev ua tau zoo thiab tsis xav txog tus nqi, solid-state lasers feem ntau yog siv. Solid-state lasers muaj kev ua tau zoo (qhov tsis xws li lub zog mem tes lossis rov ua dua zaus tuaj yeem hloov kho ntau yam), xws li lasers siv rau nuclear fusion ignition lossis loj-scale laser tshuab tsim thiab siv ntau yam khoom siv tshawb fawb, tag nrho nyob rau qeb no.

(2) Nws yuav tsum tau siv los ua lub laser rau kev siv khoom siv. Feem ntau suav hais tias yog hauv kev ntsuas thiab kev ua haujlwm. Cov txiaj ntsig zoo tshaj plaws tuaj yeem tau txais los ntawm kev siv lub tshuab hluav taws xob luv luv, tab sis kev ntseeg siab lossis kev saib xyuas thiab tus nqi ntawm cov khoom siv yuav tsum raug txiav txim siab. Nyob rau hauv xyoo tas los no, nrog rau kev txhim kho kev ntseeg siab ntawm hom-xauv khoom-lub xeev lasers thiab tshwm sim ntawm high-power fiber lasers, tib neeg muaj kev cia siab rau txoj kev loj hlob ntawm daim teb no.

(3) Semiconductor lasers thiab fiber ntau lasers li optical cov ntaub ntawv kev sib txuas lus system pab kiag li lawm. Raws li qhov kev thov kev lag luam no muaj kev txhawj xeeb, cov txiaj ntsig kev sib raug zoo yog qhov loj tshaj, tab sis nws kuj tau yooj yim cuam tshuam los ntawm kev sib raug zoo xws li kev lag luam thiab cov ntaub ntawv thiab kev sib txuas lus txoj cai. Cov neeg tseem nco qab txog kev lag luam kev nyuaj siab uas tshwm sim los ntawm kev tawg ntawm IT npuas. Ntxiv rau qhov kev ua tau zoo ntawm cov cuab yeej, cov teeb meem xws li kev ntseeg siab, tus nqi thiab kev tiv thaiv ib puag ncig yuav tsum tau txiav txim siab, thiab cov kev cai nruj. Los ntawm qhov kev xav mus ntev, kev sib txuas lus yog thaj chaw uas muaj kev cia siab tshaj plaws.

Nyob rau hauv xyoo tas los no, ultrashort mem tes lub teeb tshuab tau nrov, thiab txij li xyoo 1990s, ntau yam tunable ultrashort mem tes hom-locked solid-state lasers tau muab tso rau hauv kev siv. Lub laser tunable yog photon-confined laser nyob rau hauv uas qis zog theem ntawm lub laser nyob rau hauv lub vibrationally zoo siab lub xeev, uas broadens lub oscillation zaus band.

Ib qho Ti: Sapphire laser ua haujlwm ruaj khov, paub txog ultrashort (qhov luv tshaj plaws yog li 5fs) lub teeb pom kev zoo nrog lub zog nruab nrab ntawm 1 W. Yog tias siv lub laser siv lead ua doped nrog Yb ions, sub-picosecond mem tes tso zis nrog ntau dua qhov nruab nrab tso zis zog tuaj yeem tau.

Daim ntawv thov ntawm Short Pulse Lasers

Thaum txiav thiab drilling PCBs thiab FPCs, nws yog ib qho tseem ceeb heev kom txo tau qhov kub ntawm qhov chaw. Lub tshav kub cuam tshuam ntawm qhov chaw txiav los yog cov khoom nyob ze ntawm lub qhov yog ib hom thermal degradation rau qee yam. Kev siv ultrashort mem tes dav lasers txo qhov kub ntawm qhov chaw cuam tshuam. Ultrashort pulses tuaj yeem ua cov txheej txheem laser "txias", uas yog, "txias ua haujlwm". Qhov no yog vim tias lub sijhawm pulse luv dua lub sijhawm thermal diffusion hauv cov ntaub ntawv organic, txhais tau hais tias feem ntau ntawm lub zog laser mem tes yog nqa tawm los ntawm cov khoom ejected ua ntej nws tuaj yeem diffuse.

Ultrashort pulse lasers (USP) nrog cov mem tes dav hauv femtosecond thiab picosecond ntau tuaj yeem ua kom lub zog zoo rau thaj tsam ntawm qhov chaw laser. Thaum lub zog ceev nce mus txog kaum ntawm GW ib square centimeter, kev ua laser yuav ua tiav lub xeev "txias" ablation, uas yog, qhov no, feem ntau ntawm cov khoom yog ncaj qha evaporated los ntawm cheeb tsam laser. Nyob rau hauv txoj kev no, qhov kev puas tsuaj tsis ncaj uas yuav tshwm sim nyob ze ntawm qhov chaw tau txo qis heev, vim tias cov khoom evaporates hauv lub sijhawm luv luv thiab cov cua sov tsis muaj sijhawm los ua. Feem ntau ntawm lub zog absorbed yog nqa tawm los ntawm cov khoom ablated nyob rau hauv daim ntawv ntawm kinetic zog. Hmoov tsis zoo, tam sim no, ultrashort mem tes lasers nyuaj rau siv rau hauv kev tsim khoom. Qhov laj thawj tseem ceeb yog tias kev ua haujlwm nrawm nrawm vim qhov nruab nrab qis qis, yog li nws nyuaj rau kev sib xyaw nrog cov khoom siv tsis siv neeg ua khoom siv. Tsis tas li ntawd, lub laser yog qhov loj me me (kev mob siab rau lasers yog tsim los ntawm optical platforms).

Txawm hais tias lub zog pulse ntawm ultrashort-pulse lasers yog me dua li ntawm nanosecond lasers, qhov qis ablation pib (ntau dua kev ua haujlwm) ntawm cov lasers offsets lub zog pulse txo, yog li cov txiaj ntsig siab dua. Tsis tas li ntawd, ultrashort-pulse lasers muaj ntau dua pulse repetition tus nqi los txhawb kev ua ntau yam sai, ua rau lawv zoo tagnrho rau kev xaiv cov txheej nyias nyias rau saum cov substrates, feem ntau ceramics.

Ultrafast laser muab los ntawmJTBYShield Laser Technology Co., Ltd.yog femtosecond laser amplification system nrog tus nqi qis tshaj ntawm cov tswv cuab ntawm kev ua lag luam niaj hnub no. Nws muab tag nrho cov khoom sib xyaw ua ke rau kev tsim cov khoom siv hluav taws xob siab femtosecond pulses rau hauv ib lub thawv, thiab siv lub erbium-doped fiber femtosecond laser raws li cov noob qhov chaw, ntxiv rau qhov tshwj xeeb tsim yam tsis muaj kev hloov kho (NOTweak), tsim lub ntiaj teb tshwj xeeb, ultra-ruaj khov, Ultra-compact CPA series titanium sapphire chirped mem tes amplification system.

Cov ntaub ntawv tiv tauj:

Yog tias koj muaj lus nug, thov hu rau peb. Txawm peb cov neeg muas zaub nyob qhov twg thiab peb cov kev xav tau yog dab tsi, peb yuav ua raws li peb lub hom phiaj los muab peb cov neeg siv khoom zoo, tus nqi qis, thiab kev pabcuam zoo tshaj plaws.