Horumarka cilmi baarista ee kiristaalo Electro-Optic Q-Switched - Qaybta 1: Horudhac

Horumarka cilmi baarista ee kiristaalo Electro-Optic Q-Switched - Qaybta 1: Horudhac

Laysarka awoodda ugu sarreysa waxay leeyihiin codsiyo muhiim ah oo ku saabsan cilmi-baarista sayniska iyo warshadaha milatariga sida farsamaynta laser iyo cabbirka sawir-qaadista. Laysarka adduunka ugu horreeya wuxuu dhashay 1960-kii. Sannadkii 1962-kii, McClung waxa uu isticmaalay unugga nitrobenzene Kerr si uu u gaadho kaydka tamarta iyo sii daynta degdega ah, si uu u helo leys garaaca oo leh awood sare. Soo ifbaxa tignoolajiyada Q-bedelka waa horumar muhiim ah taariikhda horumarinta laysarka awoodda ugu sarreysa. Habkan, tamarta laser garaaca garaaca wadnaha joogtada ah ama ballaaran ayaa lagu cadaadi galay pulses leh ballac waqti aad u cidhiidhi ah. Awoodda ugu sarreysa ee laysarka waxaa lagu kordhiyey dhowr amar oo waaweyn. Farsamada beddelka elektiroonigga ah ee Q-ku-beddelashada waxay leedahay faa'iidooyinka waqtiga beddelka gaaban, wax soo saarka garaaca wadnaha oo deggan, wada-shaqeyn wanaagsan, iyo luminta godka hoose. Awoodda ugu sarreysa ee laser-ka wax-soo-saarka ayaa si fudud u gaari kara boqolaal megawatts.

Electro-optic Q-switching waa tignoolajiyada muhiimka ah ee lagu helo ballaca garaaca wadnaha oo cidhiidhi ah iyo leysarka awooda ugu sarreysa. Mabda'adeedu waa in la isticmaalo saamaynta electro-optic ee kiristaalo si loo gaaro isbeddel degdeg ah oo ku yimaada tamarta luminta resonator laser, taas oo xakameynaysa kaydinta iyo sii deynta degdega ah ee tamarta godka ama dhexdhexaadiyaha laysarka. Saamaynta elektro-optical ee crystal waxa loola jeedaa ifafaale jireed kaas oo index refractive ee iftiinka ee crystal isbeddesho xoojinta beerta codsatay ee crystal. Dhacdada ay isbeddesho tusaha dib-u-celinta iyo xoojinta goobta korontada ee la dabaqay ay leeyihiin xiriir toosan waxaa loo yaqaan 'linear electro-optics', ama Pockels Effect. Ifafaalaha ah in tusaha dib-u-celinta is beddelo iyo labajibbaaran xoogga goobta korantada ee la dabaqay ay leeyihiin xiriir toosan waxaa loo yaqaannaa saameynta elektro-optic-ka sare ama Kerr Effect.

Xaaladaha caadiga ah, saamaynta elektro-optic-ka tooska ah ee crystal-ka ayaa aad uga muhiimsan saameynta labaad ee elektro-optic. Saamaynta tooska ah ee korantada-optic-ga ayaa si weyn loogu isticmaalaa tignoolajiyada beddelka elektiroonigga ah ee Q. Waxay ku jirtaa dhammaan 20 kiristaalo oo leh kooxo dhibco aan centrosymmetric ahayn. Laakiin sida maaddada electro-optic ku habboon, kiristaalo kuwan looma baahna oo kaliya in ay leeyihiin saamayn koronto-optic ka badan oo cad, laakiin sidoo kale kala duwan ee gudbinta iftiinka ku haboon, heerka sare ee laser dhaawac, iyo xasiloonida guryaha physicochemical, sifooyinka heerkulka wanaagsan, fudud ee processing. iyo haddii hal crystal leh cabbir weyn oo tayo sare leh la heli karo. Guud ahaan marka la hadlo, kiristaalo koronto-optic ah oo wax ku ool ah ayaa loo baahan yahay in laga qiimeeyo dhinacyada soo socda: (1) Isku-xidhka elektro-optic-ga wax ku ool ah; (2) heerka waxyeelada laysarka; (3) kala duwanaanta gudbinta iftiinka; (4) iska caabin koronto; (5) koronto joogto ah; (6) sifooyinka jirka iyo kiimikaad; (7) farsamaynta. Iyadoo horumarinta codsiga iyo horumarinta tignoolajiyada ee garaaca garaaca gaaban, soo noqnoqda sare ee soo noqnoqda, iyo nidaamka laser awoodda sare, shuruudaha waxqabadka ee kiristaalo-bedelashada Q-ku sii kordhaya.

Marxaladda hore ee horumarinta tignoolajiyada-is-beddelka elektro-optic-ga, ka-hortagga kaliya ee la isticmaalay waxay ahaayeen lithium niobate (LN) iyo potassium di-deuterium phosphate (DKDP). Karistaanka LN waxa uu leeyahay marinka waxyeelada leysarka oo hooseeya waxaana inta badan lagu isticmaalaa leysarka awooda hoose ama dhexdhexaadka ah. Isla mar ahaantaana, sababtoo ah dib-u-dhaca tikniyoolajiyada diyaarinta crystal, tayada indhaha ee crystal LN waxay ahayd mid aan degganayn muddo dheer, taas oo sidoo kale xaddidaysa codsigeeda ballaaran ee laysarka. Karistaanka DKDP waa kristal phosphoric acid potassium dihydrogen (KDP) oo la miiray. Waxa ay leedahay xad dhaawac aad u sarreeya waxaana si weyn loogu isticmaalaa nidaamyada laser-ka-bedesha ee Electro-optic. Si kastaba ha ahaatee, crystal DKDP waxay u nugul tahay qulqulka waxayna leedahay muddo koritaan dheer, taas oo xaddidaysa codsigeeda ilaa xad. Rubidium titanyl oxyphosphate (RTP) crystal, barium metaborate (β-BBO) crystal, lanthanum gallium silicate (LGS) crystal, lithium tantalate (LT) crystal iyo potassium titanyl phosphate (KTP) crystal ayaa sidoo kale loo isticmaalaa in electro-optic Q-bedesha laser. nidaamyada.

WISOPTIC-DKDP POCKELS CELL

 Unug tayo sare leh DKDP Pockels oo ay samaysay WISOPTIC (@1064nm, 694nm)

 

 


Waqtiga boostada: Seb-23-2021