Ngaba uyawazi umahluko phakathi kweNanosecond, Picosecond kunye neFemtosecond Lasers?

Itekhnoloji yeLaser iqhubele phambili ngokukhawuleza kule minyaka imbalwa idlulileyo. Ukusuka kwi-nanosecond laser ukuya kwi-picosecond laser ukuya kwi-laser ye-femtosecond, isetyenziswe ngokuthe ngcembe kwimveliso yemizi-mveliso, ibonelela ngezisombululo kuzo zonke iindlela zobomi. Kodwa unolwazi olungakanani malunga nezi ntlobo zi-3 zeelaser? Masifumanise kunye:

Iinkcazelo zeNanosecond, Picosecond, kunye neeLaser zeFemtosecond

Nanosecond laser yaqala ukwaziswa kwindawo yoshishino ekupheleni kweminyaka yoo-1990 njenge-laser diode-pumped solid-state (DPSS). Nangona kunjalo, ezokuqala iilaser zazinamandla asezantsi aphumayo eewatts ezimbalwa kunye nobude obungama-355nm. Ngokuhamba kwexesha, imakethi yee-nanosecond lasers ikhulile, kwaye uninzi lweelaser ngoku zinexesha lokubetha kwentliziyo kumashumi ukuya kumakhulu ee-nanoseconds.

I-laser yePicosecond  yi-laser yobubanzi obufutshane be-pulse ekhupha i-picosecond-level pulses. Ezi lasers zibonelela ngobubanzi obufutshane be-pulse, ukuphindaphinda okuphindaphindiweyo, amandla aphezulu e-pulse, kwaye zilungele usetyenziso lwe-biomedicine, i-oscillation ye-optical parametric, kunye ne-biological imaging microscopic. Kwiinkqubo zanamhlanje zokucinga kunye nohlalutyo lwebhayoloji, iilaser zepicosecond ziye zaba zizixhobo ezibaluleke kakhulu.

I-laser ye-Femtosecond yilaser ye-ultra-short pulse enobunzulu obuphezulu ngokumangalisayo, ibalwe ngee-femtoseconds. Le teknoloji iphucukileyo inike abantu amathuba amatsha okulinga angazange abonwe ngaphambili kwaye inosetyenziso olubanzi. Ukusetyenziswa kwe-laser ye-femtosecond ye-ultra-yomelele, emfutshane-pulsed short-pulsed femtosecond ngeenjongo zokubona kuluncedo ngakumbi kwiikhemikhali ezahlukeneyo zokusabela, kubandakanywa kodwa kungaphelelanga ekuqhekekeni kwebhondi, ukuyilwa kwebhondi entsha, iproton kunye nokudluliselwa kwe-electron, i-compound isomerization, i-molecular dissociation, isantya, i-engile, kunye nokwabiwa kwemeko ye-reaction intermediates kunye neemveliso zokugqibela, ii-chemical reactions njengefuthe le-molecular reactions njengempembelelo ye-molecular reactions njengempembelelo ye-molecular reaction. kunye nokujikeleza kwiikhemikhali.

IiYunithi zokuGuqulwa kwexesha leNanoseconds, Picoseconds, kunye neFemtoseconds

1ns (nanosecond) = 0.0000000001 imizuzwana = 10-9 imizuzwana

1ps (picosecond) = 0.0000000000001 imizuzwana = 10-12 imizuzwana

1fs (femtosecond) = 0.000000000000001 imizuzwana = 10-15 imizuzwana

I-nanosecond, i-picosecond, kunye ne-femtosecond izixhobo zokusetyenzwa kwe-laser eziqhelekileyo zibonwa kwimarike zithiywe ngokusekwe kwixesha. Ezinye izinto, njengamandla e-pulse enye, ububanzi be-pulse, i-pulse frequency, kunye namandla e-pulse peak, nazo zidlala indima ekukhetheni izixhobo ezifanelekileyo zokulungisa izinto ezahlukeneyo. Ixesha elifutshane, impembelelo encinci kumphezulu wezinto eziphathekayo, okubangela umphumo ongcono wokucubungula.

Usetyenziso lwezoNyango lwePicosecond, Femtosecond, kunye neNanosecond Lasers

I-Nanosecond lasers ikhetha ukushisa kwaye itshabalalise i-melanin eluswini, ethi emva koko ikhutshwe emzimbeni ziiseli, okukhokelela ekuphelelweni kwezilonda ezinemibala. Le ndlela isetyenziswa ngokuqhelekileyo kunyango lwe-pigmentation disorders. Iilaser zePicosecond zisebenza ngesantya esiphezulu, ziqhekeza amasuntswana e-melanin ngaphandle kokonakalisa ulusu olujikelezileyo. Le ndlela ngempumelelo ephatha izifo pigmented ezifana nevus of Ota kunye Brown cyan nevus.Femtosecond laser isebenza ngohlobo pulses, nto leyo enokukhupha amandla amakhulu ngephanyazo, olukhulu unyango myopia.

Inkqubo yokupholisa yePicosecond, Femtosecond, kunye neNanosecond Lasers

Kungakhathaliseki ukuba i-nanosecond, i-picosecond okanye i-laser ye-femtosecond, kuyimfuneko ukuqinisekisa ukusebenza okuqhelekileyo kwentloko ye-laser kwaye udibanise izixhobo kunye ne-laser.  laser chiller . Isixhobo se-laser sichaneke ngakumbi, kokukhona siphezulu ukuchaneka kolawulo lobushushu. I-TEYU i-ultrafast laser chiller inozinzo lobushushu be-± 0.1 ° C kunye nokupholisa ngokukhawuleza, okuqinisekisa ukuba i-laser isebenza kwiqondo lokushisa rhoqo kwaye inomphumela ozinzile we-beam, ngaloo ndlela iphucula ubomi benkonzo ye-laser.  I-TEYU i-ultrafast laser chillers  zifanelekile kuzo zonke ezi ntlobo zintathu zezixhobo ze-laser.