Ị maara ihe dị iche n'etiti Nanosecond, Picosecond na Femtosecond Lasers?

Teknụzụ laser etolitela ngwa ngwa n'ime iri afọ ole na ole gara aga. Site na nanosecond laser ruo picosecond laser ruo femtosecond laser, ejirila nke nta nke nta tinye ya na nrụpụta ụlọ ọrụ mmepụta ihe, na-enye ihe ngwọta maka ụdị ndụ niile. Mana ole ka ị maara maka ụdị lasers atọ a? Ka anyị chọpụta ọnụ:

Nkọwa nke Nanosecond, Picosecond, na Femtosecond Lasers

Nanosecond laser Ebu ụzọ webatara n'ime ụlọ ọrụ mmepụta ihe na njedebe 1990 dị ka lasers diode-pumped solid-state (DPSS). Agbanyeghị, lasers mbụ dị otú ahụ nwere ike nrụpụta dị ala nke watts ole na ole yana ogologo ogologo nke 355nm. Ka oge na-aga, ahịa maka laser nanosecond etoola, na ọtụtụ lasers ugbu a nwere oge pulse n'ime iri na iri na narị nanoseconds.

Laser Picosecond  bụ ultra-mkpụmkpụ usu obosara laser nke na-ewepụta usu-ọkwa picosecond. Ndị lasers ndị a na-enye obosara usu dị mkpụmkpụ, ugboro ugboro ugboro ugboro, ike pulse dị elu, ma dị mma maka ngwa na biomedicine, oscillation anya parametric, na ihe onyonyo microscopic nke ndụ. N'ime usoro ihe onyonyo na nyocha nke ndụ ọgbara ọhụrụ, laser picosecond aghọwo ngwa ọrụ dị mkpa.

Laser nke abụọ bụ laser pulse dị mkpụmkpụ nke nwere ike dị oke elu nke ukwuu, gbakọọ na femtoseconds. Teknụzụ ọgbara ọhụrụ a enyela ụmụ mmadụ ohere nnwale ọhụrụ a na-enwetụbeghị ụdị ya ma nwee nnukwu ngwa. Iji laser siri ike, nke dị mkpụmkpụ femtosecond laser dị mkpụmkpụ maka ebumnuche nchọpụta dị mma maka mmeghachi omume kemịkalụ dị iche iche, gụnyere ma ọnweghị oke na mgbawa nkekọ, njikọ njikọ ọhụrụ, proton na nnyefe elektrọn, isomerization mejupụtara, dissociation molecular, ọsọ, akụkụ, na nkesa steeti mmeghachi omume intermediates na ngwaahịa ikpeazụ, mmeghachi omume kemịkalụ na-eme nke ọma dị ka ihe ngwọta na ihe ngwọta. ntụgharị na mmeghachi omume kemịkal.

Nkeji ntụgharị oge maka Nanoseconds, Picoseconds, na Femtoseconds

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

1ps (picosecond) = 0.000000000001 sekọnd = 10-12 sekọnd

1fs (femtosecond) = 0.00000000000001 sekọnd = 10-15 sekọnd

Ngwa nhazi laser nanosecond, picosecond na femtosecond nke a na-ahụkarị n'ahịa bụ aha dabere na oge. Ihe ndị ọzọ, dị ka otu ume iku ume, obosara ụbụrụ, ugboro ugboro, na ike pulse, na-ekerekwa òkè n'ịhọrọ ngwá ọrụ kwesịrị ekwesị maka nhazi ihe dị iche iche. Ogologo oge dị mkpirikpi, mmetụta dị ntakịrị na elu ihe, na-eme ka nhazi nhazi dị mma.

Ngwa ahụike nke Picosecond, Femtosecond, na Nanosecond Lasers

Nanosecond lasers na-ahọrọ na-ekpo ọkụ ma na-ebibi melanin n'ime akpụkpọ ahụ, nke mkpụrụ ndụ na-ewepụ ya n'ahụ, na-ebute ọnya ndị nwere pigmenti na-ebelata. A na-ejikarị usoro a eme ihe maka ọgwụgwọ ọrịa pigmenti. Laser Picosecond na-arụ ọrụ na oke ọsọ, na-akụda irighiri melanin na-emebighị akpụkpọ ahụ gbara ya gburugburu. Usoro a n'ụzọ dị irè na-emeso pigmented ọrịa ndị dị ka nevus nke Ota na Brown cyan nevus.Femtosecond laser arụ ọrụ n'ụdị pulses, nke nwere ike emit nnukwu ike n'otu ntabi anya, oké maka ọgwụgwọ nke myopia.

Sistemụ jụrụ oyi maka Picosecond, Femtosecond, na Nanosecond Lasers

N'agbanyeghị nanosecond, picosecond ma ọ bụ femtosecond laser, ọ dị mkpa iji hụ na ọrụ isi laser na-arụ ọrụ ma jikọta ngwa ahụ na a.  laser chiller . Ka ngwaọrụ laser na-aga n'ihu, nke ọma na-achịkwa okpomọkụ dị elu. TEYU ultrafast laser chiller nwere nkwụsi ike nke okpomọkụ nke ± 0.1 ° C na ngwa ngwa jụrụ oyi, nke na-eme ka laser na-arụ ọrụ na okpomọkụ na-adịgide adịgide ma na-enwe mmetụta siri ike, si otú ahụ na-eme ka ndụ ọrụ nke laser dịkwuo elu.  TEYU ultrafast laser chillers  adabara ndị a niile ụdị atọ nke laser ngwá.