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Ukucutshungulwa kwe-laser kuvame kakhulu empilweni yethu yansuku zonke futhi abaningi bethu bajwayelene nakho. Ungase uzwe kaningi ukuthi amagama athi i-nanosecond laser, i-picosecond laser, i-femtosecond laser. Wonke angamalungu e-ultrafast laser. Kodwa uyazi ukuthi ungawahlukanisa kanjani?
Okokuqala, ake sithole ukuthi kusho ukuthini lokhu "kwesibili".
Isekhondi elincane eli-1 = 10-9 okwesibili
I-picosecond e-1 = 10-12 okwesibili
1 isekhondi ye-femto = 10-15 okwesibili
Ngakho-ke, umehluko omkhulu phakathi kwe-nanosecond laser, i-picosecond laser kanye ne-femtosecond laser usesikhathini sazo.
Incazelo ye-utlrafast laser
Kudala, abantu bazama ukusebenzisa i-laser ukwenza i-micromachining. Kodwa-ke, njengoba i-laser yendabuko inobubanzi obude be-pulse kanye nokuqina okuphansi kwe-laser, izinto ezizocutshungulwa kulula ukuzincibilikisa futhi ziqhubeke nokuhwamuka. Nakuba umsebe we-laser ungagxila endaweni encane kakhulu ye-laser, umthelela wokushisa ezintweni usemkhulu impela, okunciphisa ukunemba kokucubungula. Ukunciphisa umphumela wokushisa kuphela okungathuthukisa ikhwalithi yokucubungula.
Kodwa uma i-laser ye-ultrafast isebenza ezintweni, umphumela wokucubungula uba noshintsho olukhulu. Njengoba amandla okushaya kwenhliziyo ekhula kakhulu, ubukhulu bamandla aphezulu bunamandla okususa izinto zikagesi zangaphandle. Njengoba ukusebenzisana phakathi kwe-laser ye-ultrafast nezinto kufushane kakhulu, i-ion isivele isusiwe ebusweni bezinto ezibonakalayo ngaphambi kokuba idlulisele amandla ezintweni ezizungezile, ngakho-ke akukho mphumela wokushisa ozolethwa ezintweni ezizungezile. Ngakho-ke, ukucubungula i-laser ye-ultrafast kwaziwa nangokuthi ukucubungula okubandayo.
Kunezinhlobo eziningi zezindlela zokusebenzisa i-laser esheshayo ekukhiqizweni kwezimboni. Ngezansi sizobala ezimbalwa:
1. Ukubhoboza imigodi
Ekwakhiweni kwebhodi lesifunda, abantu baqala ukusebenzisa isisekelo se-ceramics ukuze bathathe indawo yesisekelo sepulasitiki yendabuko ukuze bathole ukuhanjiswa kokushisa okungcono. Ukuze kuxhunywe izingxenye ze-elekthronikhi, kudingeka kubholwe imigodi emincane eyizinkulungwane ezingama-μm ebhodini. Ngakho-ke, ukugcina isisekelo sizinzile ngaphandle kokuphazanyiswa ukufakwa kokushisa ngesikhathi sokubhoboza imigodi sekubaluleke kakhulu. Futhi i-picosecond laser iyithuluzi elifanele.
I-laser ye-Picosecond iyenza ukubhoboza imigodi nge-percussion kube yinto ebangela ukubhoboza futhi igcina ukufana kwembobo. Ngaphezu kwebhodi lesifunda, i-laser ye-picosecond iyasebenza futhi ekwenzeni ukubhoboza imigodi kwekhwalithi ephezulu kufilimu encane yepulasitiki, i-semiconductor, ifilimu yensimbi kanye ne-sapphire.
2. Ukubhala nokusika
Umugqa ungakhiwa ngokuskena okuqhubekayo ukuze kubekwe phezu kwe-laser pulse. Lokhu kudinga ukuskena okuningi ukuze kungene ngaphakathi kwe-ceramics kuze kube yilapho umugqa usufinyelele ku-1/6 yobukhulu bezinto ezibonakalayo. Bese uhlukanisa imodyuli ngayinye esisekelweni se-ceramics kanye nale migqa. Lolu hlobo lokuhlukanisa lubizwa ngokuthi ukuskena.
Enye indlela yokuhlukanisa ukusika nge-pulse laser ablation. Kudinga ukususwa kwezinto kuze kube yilapho izinto sezisikiwe ngokuphelele.
Ngokubhala nokusika okungenhla, i-picosecond laser kanye ne-nanosecond laser yizinketho ezifanelekile.
3. Ukususwa kokugqoka
Esinye isicelo se-micromachining se-laser ye-ultrafast ukususa i-coating. Lokhu kusho ukususa ngokunembile i-coating ngaphandle kokulimaza noma ukulimaza kancane izinto zesisekelo. I-ablation ingaba imigqa ye-micrometer eminingana ububanzi noma isikali esikhulu samasentimitha ayizikwele amaningana. Njengoba ububanzi be-coating buncane kakhulu kunobubanzi be-ablation, ukushisa ngeke kudlulele eceleni. Lokhu kwenza i-nanosecond laser ifaneleke kakhulu.
I-laser ye-Ultrafast inamandla amakhulu futhi inekusasa elithembisayo. Ayidingi ukucutshungulwa ngemuva kokucubungula, kulula ukuhlanganisa, ukusebenza kahle kokucubungula okuphezulu, ukusetshenziswa kwezinto eziphansi, ukungcola okuphansi kwemvelo. Isetshenziswe kabanzi ezimotweni, kuma-elekthronikhi, kumadivayisi, ekukhiqizweni kwemishini, njll. Ukuze igcine i-laser ye-ultrafast isebenza kahle isikhathi eside, izinga lokushisa layo kumele ligcinwe kahle. Ama-chiller amanzi aphathekayo ochungechunge lwe-S&A Teyu CWUP afanele kakhulu ukupholisa ama-laser e-ultrafast afinyelela ku-30W. Lawa mayunithi e-laser chiller anezinga eliphezulu kakhulu lokunemba okungu-±0.1℃ futhi asekela umsebenzi wokuxhumana we-Modbus 485. Ngombhobho oklanywe kahle, ithuba lokukhiqiza amabhamuza selinciphile kakhulu, okwehlisa umthelela ku-laser ye-ultrafast.
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