Xidhiidhka Quantum: Laysarka dhererka fidsan ee cidhiidhi ah

Isgaarsiinta tirada:leysarka linewid dhuuban

Laysarka fidsan ee cidhiidhiga ahwaa nooc ka mid ah laysarka oo leh sifooyin gaar ah oo indhaha ah, kaas oo lagu garto awoodda soo saarista laydhka laysarka oo leh xariiqo muuqaal ah oo aad u yar (taas oo ah, spectrum cidhiidhi ah). Baaxadda xariiqda laysarka cidhiidhiga ah ee cidhiidhiga ah waxa loola jeedaa ballaca xadhkaha spectrum, sida caadiga ah lagu muujiyaa xadhkaha xadhkaha ee inta jeer ee halbeeg, ballacani waxa kale oo loo yaqaan "ballaadhka xariiqda spectral" ama si fudud "ballaadhka xariiqda". Laysarada dhuuban ee cidhiidhiga ah waxay leeyihiin ballac xariiq cidhiidhi ah, badiyaa inta u dhaxaysa dhawr boqol oo kilohertz (kHz) iyo dhawr megahertz (MHz), taas oo aad uga yar ballaca xadhkaha indhaha ee leysarka caadiga ah.

Kala soocida qaab dhismeedka daloolka:

1. Laysarka daloolka toosan ee fiber-ka ayaa loo qaybiyaa nooca Bragg milicsiga (DBR Laser) iyo nooca jawaab celinta qaybsan (DFB Laser) laba dhisme. Laysarka wax soo saarka ee labada lasers waa iftiin aad isku xiran oo leh xariiq cidhiidhi ah iyo qaylo hoose. Laser fiber DFB gaari kartaa labada jawaab celin laser iyoleysarkaxulashada qaabka, markaa xasiloonida soo noqnoqda laysarka wax soo saarku waa wanaagsan tahay, wayna fududahay in la helo hal qaab oo dherer ah oo deggan.

2. Ring-cavity fiber lasers soo saara laser-ballac cidhiidhi ah iyagoo soo bandhigaya filtarrada cidhiidhiga ah sida Fabry-Perot (FP) godadka faragelinta, grating fiber ama sagnac godadka giraanta. Si kastaba ha noqotee, sababtoo ah dhererka dheer ee godka dheer, dhexdhexaadinta qaabka dhererka waa mid yar, waana sahlan tahay in lagu boodo habka deegaanka, iyo xasiloonida ayaa liidata.

Codsiga Alaabta:

1. Dareemka indhaha ee cidhiidhiga ah ee leysarka sida isha iftiinka ugu fiican ee dareemayaasha fiber indhaha, iyadoo la isku darayo dareemayaasha fiber indhaha, waxay gaari karaan saxnaanta sare, cabbirka dareenka sare. Tusaale ahaan, cadaadiska ama heerkulka dareemayaasha fiber optics, xasiloonida laysarka linewidth ee cidhiidhi ah waxay caawisaa hubinta saxnaanta natiijooyinka cabbirka.

2. Cabbiraadda spectral-ka-sare ee laysarka cidhiidhiga ah ee cidhiidhiga ah waxay leeyihiin ballac xariiqyo muuqaal ah oo aad u cidhiidhi ah, taas oo ka dhigaysa ilo ku habboon spectrometers-xalinta sare. Adiga oo dooranaya hirarka dhererka saxda ah iyo cabbirka fidsan, laysarka cidhiidhiga ah ee fidsan ayaa loo isticmaali karaa falanqayn sax ah oo muuqaal ah iyo cabbir muuqaal ah. Tusaale ahaan, dareemayaasha gaaska iyo la socodka deegaanka, laysarka linewidth cidhiidhi ah ayaa loo isticmaali karaa si loo gaaro qiyaas sax ah ee nuugista indhaha, qiiqa indhaha iyo spectra molecular ee jawiga.

3. Lidar hal-frequency cidhiidhi ah oo ballac fidsan fiber lasers sidoo kale waxay leeyihiin codsiyo aad u muhiim ah liDAR ama nidaamka kala duwan ee laser. Isticmaalka leysarka fibre badhka hal jeer ee soo noqnoqda ee xariiqda cidhiidhiga ah sida isha iftiinka ogaanshaha, oo ay weheliso ogaanshaha isku xirnaanta indhaha, waxay dhisi kartaa masaafo dheer (boqolaal kiiloomitir) liDAR ama kala fogeeyaha. Mabda'aani wuxuu leeyahay mabda'a shaqo ee la mid ah tikniyoolajiyadda OFDR ee fiber optic-ga, sidaa darteed kaliya maaha inay leedahay xallin aad u sarreeya, laakiin sidoo kale waxay kordhin kartaa masaafada cabbirka. Nidaamkan, ballaca xariiqda laysarka ee leysarka ama dhererka isku xirnaanta ayaa go'aamiya cabbirka cabbirka fogaanta iyo saxnaanta cabbirka, sidaas darteed si ka wanaagsan isku xirnaanta isha iftiinka, waxay sare u qaadeysaa waxqabadka nidaamka oo dhan.