Na U Tseba Phapano Pakeng tsa Nanosecond, Picosecond le Femtosecond Lasers?

Theknoloji ea laser e tsoetse pele ka potlako lilemong tse mashome a seng makae tse fetileng. Ho tloha ho laser ea nanosecond ho isa picosecond laser ho ea femtosecond laser, butle-butle e sebelisitsoe tlhahisong ea indasteri, e fana ka tharollo bakeng sa maemo ohle a bophelo. Empa u tseba hakae ka mefuta e 3 ea li-lasers? A re boneng hammoho:

Litlhaloso tsa Nanosecond, Picosecond, le Femtosecond Lasers

Nanosecond laser e ile ea hlahisoa ka lekhetlo la pele lefapheng la indasteri ho elella bofelong ba lilemo tsa bo-1990 e le lilase tsa diode-pumped solid-state (DPSS). Leha ho le joalo, lilase tsa pele tse joalo li ne li e-na le matla a fokolang a li-watts tse 'maloa le bolelele ba 355nm. Ha nako e ntse e ea, 'maraka oa li-nanosecond lasers o holile,' me boholo ba li-lasers joale li na le nako ea ho otla ha pelo ho tloha ho mashome ho isa ho makholo a li-nanoseconds.

Picosecond laser  ke laser ultra-short pulse width e ntšang maqhubu a boemo ba picosecond. Li-lasers tsena li fana ka bophara bo khuts'oane ba pulse, maqhubu a pheta-phetoang, matla a phahameng a pulse, 'me a loketse lits'ebetso tsa biomedicine, oscillation ea optical parametric oscillation, le biological microscopic imaging. Litsamaisong tsa sejoale-joale tsa ho nahana le ho sekaseka baeloji, li-lasecond lasers e se e le lisebelisoa tsa bohlokoa le ho feta.

Femtosecond laser ke laser ultra-short pulse laser e matla a holimo ka mokhoa o makatsang, e baloang ka li-femtoseconds. Theknoloji ena e tsoetseng pele e file batho menyetla e mecha ea liteko 'me e na le lisebelisoa tse pharaletseng. Tšebeliso ea laser ea femtosecond e matla haholo, e khuts'oane bakeng sa sepheo sa ho lemoha e molemo haholo bakeng sa karabelo ea lik'hemik'hale tse fapaneng, ho kenyeletsoa empa ha e felle feela ho bond cleavage, sebopeho se secha sa bond, proton le phetiso ea elektrone, isomerization ea komporo, karohano ea limolek'hule, lebelo, angle, le phetisetso ea mmuso ea lipakeng tsa karabelo le lihlahisoa tsa ho qetela, karabelo ea lik'hemik'hale le tšusumetso ea limolek'hule. le ho potoloha ha lik'hemik'hale.

Liyuniti tsa Phetoho ea Nako bakeng sa Nanoseconds, Picoseconds, le Femtoseconds

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

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

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

Lisebelisoa tsa nanosecond, picosecond, le femtosecond laser process tse atisang ho bonoa 'marakeng li rehiloe ho latela nako. Lintlha tse ling, tse kang matla a pulse e le 'ngoe, bophara ba pulse, maqhubu a pulse, le matla a pulse peak, le tsona li bapala karolo ea ho khetha lisebelisoa tse nepahetseng bakeng sa ho sebetsana le lisebelisoa tse fapaneng. Nako e khuts'oane, tšusumetso e fokolang holim'a lintho tse bonahalang, e hlahisang phello e ntle ea ts'ebetso.

Lisebelisoa tsa Bongaka tsa Picosecond, Femtosecond, le Nanosecond Lasers

Nanosecond lasers e khetha ho futhumatsa le ho senya melanin letlalong, e ntan'o ntšoa 'meleng ke lisele, e leng se bakang ho fela ha liso tsa mebala. Mokhoa ona o atisa ho sebelisoa bakeng sa phekolo ea mathata a pigmentation. Li-laser tsa Picosecond li sebetsa ka lebelo le phahameng, li pshatla likaroloana tsa melanin ntle le ho senya letlalo le potolohileng. Mokhoa ona o sebetsana ka katleho le mafu a pigmented a kang nevus ea Ota le Brown cyan nevus.Femtosecond laser e sebetsa ka mokhoa oa pulses, e ka hlahisang matla a maholo ka ho panya ha leihlo, e kholo bakeng sa phekolo ea myopia.

Sistimi ea ho Pholisa bakeng sa Picosecond, Femtosecond, le Nanosecond Lasers

Ho sa tsotelehe nanosecond, picosecond kapa femtosecond laser, hoa hlokahala ho netefatsa ts'ebetso e tloaelehileng ea hlooho ea laser le ho kopanya lisebelisoa le  laser chiller . Ha thepa ea laser e nepile haholoanyane, e phahamisa ho nepahala ha taolo ea mocheso. TEYU ultrafast laser chiller e na le botsitso ba mocheso oa ± 0.1 ° C le ho pholile ka potlako, e leng se tiisang hore laser e sebetsa ka mocheso o sa khaotseng 'me e na le tlhahiso e tsitsitseng ea mahlaseli, kahoo e ntlafatsa bophelo ba tšebeletso ea laser.  Li-chiller tsa laser tsa TEYU tse potlakileng haholo  li loketse mefuta ena eohle e meraro ea lisebelisoa tsa laser.