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Ukucutshungulwa kwelaser kuqhelekile kubomi bethu bemihla ngemihla kwaye uninzi lwethu luqhelene nayo. Usenokuva rhoqo ukuba amagama athi nanosecond laser, picosecond laser, femtosecond laser. Zonke zeze-ultrafast laser. Kodwa uyazi ukuba ungazahlula njani?
Okokuqala, masifumanise ukuba ezi "sibini" zithetha ukuthini.
I-nanosecond e-1 = 10-9 Isibini
I-picosecond e-1 = 10-12 Isibini
Isekhondi enye yefemto = 10-15 Isibini
Ke ngoko, umahluko omkhulu phakathi kwe-nanosecond laser, i-picosecond laser kunye ne-femtosecond laser usekwe kwixesha labo.
Intsingiselo ye-utlrafast laser
Kudala, abantu babezama ukusebenzisa i-laser ukwenza i-micromachining. Nangona kunjalo, ekubeni i-laser yendabuko inobubanzi obude be-pulse kunye nobunzima obuphantsi be-laser, izinto eziza kucutshungulwa kulula ukuzinyibilikisa kwaye ziqhubeke ziphuma. Nangona umqadi we-laser unokujoliswa kwindawo encinci kakhulu ye-laser, impembelelo yobushushu kwizinto isenkulu kakhulu, nto leyo ethintela ukuchaneka kokucubungula. Kuphela ukunciphisa impembelelo yobushushu kunokuphucula umgangatho wokucubungula.
Kodwa xa i-laser ekhawulezayo isebenza kwizinto ezisetyenziswayo, isiphumo sokucubungula sitshintsha kakhulu. Njengoko amandla okubetha kwentliziyo esanda kakhulu, uxinano lwamandla aphezulu lunamandla ngokwaneleyo okususa izixhobo zombane zangaphandle. Ekubeni ukusebenzisana phakathi kwe-laser ekhawulezayo nezinto ezisetyenziswayo kukufutshane kakhulu, i-ion sele isusiwe kumphezulu wezinto ezisetyenziswayo ngaphambi kokuba ithumele amandla kwizinto ezisetyenziswayo, ngoko ke akukho siphumo sobushushu siya kuziswa kwizinto ezisetyenziswayo. Ke ngoko, ukucubungula i-laser ekhawulezayo kukwaziwa ngokuba yi-cold processing.
Kukho iintlobo ngeentlobo zezicelo ze-laser ekhawulezayo kwimveliso yemizi-mveliso. Ngezantsi siza kukhankanya ezimbalwa:
1. Ukubhoboza imingxunya
Kuyilo lwebhodi yesekethe, abantu baqala ukusebenzisa isiseko se-ceramics ukutshintsha isiseko seplastiki yendabuko ukuze bafezekise ukuhanjiswa kobushushu okungcono. Ukuze kuqhagamshelwe izinto ze-elektroniki, kufuneka kugqojwe imingxuma emincinci engamawaka e-μm ebhodini. Ke ngoko, ukugcina isiseko sizinzile ngaphandle kokuphazanyiswa kukufakwa kobushushu ngexesha lokubhoboza imingxuma kuye kwaba yinto ebalulekileyo. Kwaye i-picosecond lase sisixhobo esifanelekileyo.
I-laser yePicosecond iyenza ikwazi ukugrumba imingxunya nge-percussion kwaye igcina umngxunya ufana. Ukongeza kwibhodi yesekethe, i-laser yepicosecond ikwasebenza ekwenzeni ukugrumba imingxunya okusemgangathweni ophezulu kwifilimu encinci yeplastiki, i-semiconductor, ifilimu yesinyithi kunye nesafire.
2. Ukubhala nokusika
Umgca unokwenziwa ngokuskena okuqhubekayo ukuze kugqunywe i-laser pulse. Oku kufuna ukuskena okuninzi ukuze kungene nzulu ngaphakathi kwi-ceramics de umgca ufikelele kwi-1/6 yobukhulu bezinto. Emva koko yahlula imodyuli nganye kwisiseko se-ceramics kunye nale migca. Olu hlobo lokwahlula lubizwa ngokuba yi-scribing.
Enye indlela yokwahlula kukusika nge-pulse laser ablation. Oku kufuna ukurhoxiswa kwezinto de zisikwe ngokupheleleyo.
Kwi-scribing and cutting engentla, i-picosecond laser kunye ne-nanosecond laser zezona zikhetho zifanelekileyo.
3. Ukususwa kwengubo
Esinye isicelo se-micromachining se-ultrafast laser kukususa i-coating. Oku kuthetha ukususa ngokuchanekileyo i-coating ngaphandle kokonakalisa okanye ukonakalisa kancinci izinto zesiseko. I-ablation ingaba yimigca ye-micrometer ebanzi okanye isikali esikhulu seesentimitha ezininzi zesikwere. Ekubeni ububanzi be-coating buncinci kakhulu kunobubanzi be-ablation, ubushushu abuyi kudluliselwa ecaleni. Oku kwenza i-nanosecond laser ifaneleke kakhulu.
I-laser ye-Ultrafast inamandla amakhulu kwaye ithembisa ikamva. Ayinazo izinto ezifunekayo emva kokucubungula, kulula ukuyidibanisa, ukusebenza kakuhle kokucubungula, ukusetyenziswa kwezinto okuphantsi, ungcoliseko oluphantsi kokusingqongileyo. Isetyenziswe kakhulu kwiimoto, izixhobo ze-elektroniki, izixhobo, ukwenziwa koomatshini, njl.njl. Ukuze igcine i-laser ye-ultrafast isebenza ngokuchanekileyo kwixesha elide, ubushushu bayo kufuneka bugcinwe kakuhle. Ii-S&A Teyu CWUP series portable water chillers zilungele kakhulu ukupholisa ii-ultrafast lasers ukuya kuthi ga kwi-30W. Ezi yunithi ze-laser chillers zinezinga eliphezulu kakhulu lokuchaneka kwe-±0.1℃ kwaye zixhasa umsebenzi wonxibelelwano we-Modbus 485. Ngepayipi eyilwe kakuhle, ithuba lokuvelisa i-bubble liye laba lincinci kakhulu, nto leyo enciphisa impembelelo kwi-ultrafast laser.
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