Keligiis noocaas ahUltrafist LaserQaybta koowaad
Sifooyinka gaarka ah ee Ultrafiastlasers
Muddada garaaca wadnaha ee gaagaaban ee loo yaqaan 'Ultraf' ee lesers-ka gacanta ee loo yaqaan 'ultrafiast' wuxuu siinayaa nidaamyadan sifooyinkaan gaarka ah ee ka soocaya garaaca wadnaha ama xaga-harada (CW) ee laxeeyeyaasha. Si loo abuuro garaaca caynkasta oo noocan ah, xaaryo aad u kala duwan oo muuqaalka ah ayaa loo baahan yahay. Qaabka garaaca wadnaha iyo makanaha dhexe ayaa go'aaminaya xarkaha ugu yar ee loo baahan yahay si loo soo saaro galbeedka muddo gaar ah. Caadi ahaan, xiriirkan waxaa lagu sharaxay marka loo eego badeecada-loo yaqaan 'TRWWIDT' (TBP), oo laga soo qaatay mabda 'aan la hubin. TBP ee Gaussull Pulse waxaa bixiya qaaciddada soosocda: TBPgauss = Δτν≈0.441
Δττ muddada garaaca wadnaha iyo Δ waa xad-gudubka soo noqnoqda. Asal ahaan, isla'egtu waxay muujineysaa in ay jirto xiriir tartan ah oo ka dhexeeya muuqaalka Parsuwtth iyo garaaca wadnaha, taasoo la micno ah in muddada garaaca wadnaha uu hoos u dhaco, xarkaha loo baahan yahay si loo abuuro garaaca wadnaha. Jaantus 1 wuxuu muujinayaa xarkaha ugu yar ee loo baahan yahay si loo taageero dhowr meelood oo garaaca wadnaha ah.
Jaantus 1: Ugu yaraan xarkaha ugu yar ee muuqaalka ah ayaa looga baahan yahay inuu taageeroLaser Pulsesee 10 ps (cagaar), 500 fs (buluug), iyo 50 fs (casaan)
Caqabadaha farsamada ee loo yaqaan 'ultrafiast like'
Xaddiga ballaaran ee muuqaalka ah, awoodda ugu sarreysa, iyo muddada garaaca garaaca garaaca wadnaha ee loo yaqaan 'ultrafiast's lesers-ka waa in si sax ah loogu maareeyaa nidaamkaaga. Badanaa, mid ka mid ah xalka ugu fudud ee caqabadahaas waa soo-saarkii muuqaalka ballaaran ee lasers. Haddii aad marka hore hore u isticmaashay garaaca wadnaha ee hore ama la-tanaashaha haatan, kaydkaaga jira ee qaybaha indhaha ah ayaa laga yaabaa inaysan ka fikiri karin ama u gudbin kara xarkaha buuxa ee ka mid ah pults-ka.
Xannaaneynta Waxyeellada Laser
Ultrafics Optics sidoo kale aad ayuu uga duwan yahay wuuna ku adag yahay inuu u wareego meelaha dhaawacyada laser (LDT) marka la barbar dhigo ilo badan oo laser ah. Marka Optics loo bixiyonanosecond losers losers, Qiimayaasha LDT waxay badanaa ku jiraan nidaamka 5-10 J / cm2. Loogu talagalay indhaha, qiimaheeda weynaanta ayaa ah mid aan la maqleyn, maaddaama qiyamka LDT ay u badan tahay inay ku jiraan nidaamka <1 j / cm2, sida caadiga ah ugu dhow 0.3 J / cm2. Kala duwanaanshaha weyn ee 'ldt codkad' ee ku hoos yaal waddooyinka garaaca wadnaha ee kaladuwan waa natiijada hababka waxyeelada laser ee ku saleysan waqtiyada garaaca wadnaha. Loogu talagalay nanosecond losers ama ka dheerlased lasers, habka ugu weyn ee keena burburka waa kuleylka kuleylka kuleylka. Daboolka iyo agabyada sunta ah eeaaladaha indhahanuugo sawirrada dhacdada oo kululee. Tani waxay kuu horseedi kartaa dhalanrog ee dharka qashinka ee maaddada. Balaadhinta kuleylka, dillaalidda, dhalaalaynta iyo culeyska jilibka ayaa ah dhaawacyada kuleylka kuleylka ee kuwanilaha laser.
Si kastaba ha noqotee, ee loo yaqaan 'ultrafiast', muddada garaaca wadnaha laftiisa ayaa ka dhakhso badan waqtiga qiyaasta kuleylka ee laser-ka ee laser-ka, sidaa darteed saamaynta kuleylka, sidaa darteed saamaynta kuleylka ma aha sababaha ugu badan ee burburka laser-ka. Taabadalkeed, awoodda ugu sarreysa ee loo yaqaan 'ultrafiast's laser waxay u beddelaysaa waxyeelada waxyeelada loo geysto hanaanka aan tooska ahayn sida ka maqnaanshaha sawir-qaadista iyo ionization. Tani waa sababta ay suurtagal u tahay in si fudud loo ciriiriyo qiimeynta LDT ee garaaca nanosecond ee ah in ka mid ah garaaca wadnaha ultrafied, sababtoo ah hababka jireed ee burburka ayaa ka duwan. Sidaa darteed, iyada oo la mid ah xaalado la mid ah (tusaale, mawjad-mareenka, muddada garaaca wadnaha, iyo heerka ku celcelinta), aaladda indhaha ee leh qiimeyn ku filan oo ku filan oo ah aaladda ugu fiican ee arjigaaga ugu fiican. Ofsics-ka ayaa lagu tijaabiyay xaalado kaladuwan ma mataleyso waxqabadka dhabta ah ee isku mid ah ee ku jira nidaamka.
Jaantus 1: Qaababka laser-ka waxaay waxyeelo u geysteen waqtiyada garaaca wadnaha ee kaladuwan
Waqtiga Post: Jun-24-2024