Ị Maara Ihe Dị Iche n'etiti Nanosecond, Picosecond na Femtosecond Lasers?

Teknụzụ laser arịgola elu nke ukwuu n'ime iri afọ ole na ole gara aga. Site na laser nanosecond ruo laser picosecond ruo laser femtosecond, ejirila ya mee ihe n'ọrụ mmepụta ihe, na-enye ngwọta maka ụdị ndụ niile. Mana kedu ihe ị maara gbasara ụdị laser atọ a? Ka anyị chọpụta ọnụ:

Nkọwa nke Nanosecond, Picosecond, na Femtosecond Lasers

E bu ụzọ webata laser Nanosecond n'ime ụlọ ọrụ mmepụta ihe na ngwụcha afọ 1990 dị ka laser siri ike nke diode-pumped (DPSS). Agbanyeghị, laser mbụ ndị dị otú ahụ nwere obere ike mmepụta nke watts ole na ole na ogologo ebili mmiri nke 355nm. Ka oge na-aga, ahịa maka laser nanosecond etoola, ọtụtụ laser ugbu a na-enwe oge mkpali n'ime iri ruo ọtụtụ narị nanoseconds.

Laser Picosecond bụ laser obosara pulse dị mkpụmkpụ nke na-ewepụta pulse ọkwa picosecond. Laser ndị a na-enye obosara pulse dị mkpụmkpụ, ugboro ugboro a na-agbanwe agbanwe, ike pulse dị elu, ma dịkwa mma maka ojiji na biomedicine, oscillation parametric optical, na onyonyo microscopic nke bayoloji. Na sistemụ onyonyo na nyocha bayoloji nke oge a, laser picosecond aghọwo ngwaọrụ dị mkpa karị.

Laser Femtosecond bụ laser pulse dị mkpụmkpụ nke nwere ike dị oke elu, nke a na-agbakọ na femtosekọnd. Teknụzụ dị elu a enyela ụmụ mmadụ ohere nnwale ọhụrụ a na-ahụtụbeghị mbụ ma nwee ọtụtụ ojiji. Ojiji nke laser femtosekọnd dị mkpụmkpụ nke siri ike nke ukwuu, nke nwere obere mkpali maka ebumnuche nchọpụta bara uru karịsịa maka mmeghachi omume kemịkalụ dị iche iche, gụnyere mana ejedebeghị na nkewa njikọ, nhazi njikọ ọhụrụ, nnyefe proton na elektrọn, isomerization compound, nkewa molecular, ọsọ, akụkụ, na nkesa steeti nke ndị na-eme mmeghachi omume na ngwaahịa ikpeazụ, mmeghachi omume kemịkalụ na-eme na ngwọta na mmetụta nke ihe mgbaze, yana mmetụta nke vibration na ntụgharị molecular na mmeghachi omume kemịkalụ.

Ngụkọta Mgbanwe Oge maka Nanoseconds, Picoseconds, na Femtoseconds

1ns (nanosecond) = 0.00000000001 sekọnd = 10-9 sekọnd

1ps (picosecond) = 0.00000000000001 sekọnd = 10-12 sekọnd

1fs (femtosekọnd) = 0.00000000000000001 sekọnd = 10-15 sekọnd

A na-akpọ ngwa nhazi laser nanosecond, picosecond, na femtosecond nke a na-ahụkarị n'ahịa aha dabere na oge. Ihe ndị ọzọ, dị ka ike mkpali otu, obosara pulse, ugboro pulse, na ike kacha elu pulse, na-arụkwa ọrụ n'ịhọrọ akụrụngwa kwesịrị ekwesị maka nhazi ihe dị iche iche. Ka oge dị mkpụmkpụ, mmetụta ya na-ebelata, na-eme ka ọ dịkwuo mma n'elu ihe ahụ.

Ngwa ọgwụ nke Picosecond, Femtosecond, na Nanosecond Lasers

Nanosecond lasers na-ekpo ọkụ ma na-ebibi melanin n'akpụkpọ ahụ, nke mkpụrụ ndụ na-ewepụ n'ahụ, na-eme ka ọnyá ndị nwere agba na-apụ n'anya. A na-ejikarị usoro a eme ihe maka ọgwụgwọ nke nsogbu agba. Picosecond lasers na-arụ ọrụ n'ọsọ dị elu, na-agbaji ihe ndị melanin na-emebighị akpụkpọ ahụ gbara ya gburugburu. Usoro a na-agwọ ọrịa ndị nwere agba dị ka nevus nke Ota na Brown cyan nevus nke ọma. Femtosecond laser na-arụ ọrụ n'ụdị pulses, nke nwere ike iwepụta ike dị ukwuu n'otu ntabi anya, dị mma maka ọgwụgwọ myopia.

Sistemụ Jụụ maka Laser Picosecond, Femtosecond, na Nanosecond

N'agbanyeghị nanosecond, picosecond ma ọ bụ femtosecond laser, ọ dị mkpa iji hụ na isi laser ahụ na-arụ ọrụ nkịtị ma jikọta akụrụngwa ahụ na ihe na-ekpo ọkụ laser . Ka ngwa laser ahụ si dị kpọmkwem, otú ahụ ka izi ezi nke njikwa okpomọkụ dị elu. TEYU igwe oyi laser dị oke ọsọ nwere nkwụsi ike okpomọkụ nke ±0.1°C na oyi ngwa ngwa, nke na-eme ka laser ahụ na-arụ ọrụ na okpomọkụ na-agbanwe agbanwe ma nwee mmepụta ìhè kwụsiri ike, si otú a na-eme ka ndụ ọrụ nke laser ahụ ka mma.TEYU igwe oyi laser kachasị ọsọ dabara adaba maka ụdị ngwa laser atọ a niile.