Kooxda Laser-ka bilaashka ah ee Akademiyada Sayniska ee Shiinaha waxay horumar ka sameeyeen cilmi-baadhista leysarka elektaroonigga ah ee bilaashka ah.Iyada oo ku saleysan Shanghai Soft X-ray Free Electron Laser Facility, habka cusub ee echo harmonic cascade free electron laser soo jeediyay Shiinaha ayaa si guul leh loo xaqiijiyay, iyo shucaaca raajada jilicsan oo leh waxqabad aad u fiican ayaa la helay.Dhawaan, Natiijooyinka waxaa lagu daabacay Optica iyada oo hoos timaada ciwaanka Isku-xidhan iyo ultra-gaaban jilicsan ee raajo-gaaban ee ka soo baxa leysarka elektaroonigga ah ee bilaashka ah ee echo-enabled.
Laysarka elektaroonigga ah ee bilaashka ah ee raajo waa mid ka mid ah ilaha iftiinka ugu horumarsan adduunka.Waqtigan xaadirka ah, inta badan raajada caalamiga ah ee elektaroonigga ah ee bilaashka ah waxay ku saleysan yihiin habka is-xoojinta iskeed u sii daaya (SASE), SASE waxay leedahay dhalaal aad u sarreeya iyo heerka femto ballac garaaca wadnaha ultra-gaaban iyo waxqabadka kale ee aad u fiican, laakiin SASE gariir buuqa, isku xirnaanta iyo xasiloonida garaaca shucaaca ma sarreeyo, ma aha x-ray band “laser”.Mid ka mid ah jihooyinka ugu muhiimsan ee horumarinta ee berrinka caalamiga ah ee laser-ka bilaashka ah waa in la dhaliyo shucaaca raajada oo si buuxda isku xiran oo leh tayada laser caadiga ah, iyo habka muhiimka ah waa in la isticmaalo abuur dibadda ah oo bilaash ah habka hawlgalka laser elektarooniga ah.Shucaaca laambada elektarooniga ah ee bilaashka ah ee abuurka dibadda waxa uu dhaxlaa sifooyinka abuurka laysarka, waxana uu leeyahay sifooyin aad u fiican sida isku xidhnaan buuxda, xakamaynta wejiga iyo la shaqaynta saxda ah ee leysarka bamka dibadda.Si kastaba ha ahaatee, iyada oo ay ugu wacan tahay xaddidaadda hirarka iyo ballaca garaaca wadnaha ee laser abuurka, daboolka dhererka dhererka gaaban iyo cabbirka dhererka dhererka garaaca ee leysarka abuurka dibadda ee bilaashka ah ayaa xaddidan.Si loo sii ballaadhiyo daboolida hirarka gaaban ee laydhka elektarooniga ah ee abuurka dibadda, hababka cusub ee laser elektarooniga ah ee bilaashka ah sida jiilka echo harmonic ayaa si xooggan loogu soo saaray adduunka sannadihii u dambeeyay.
Laser elektarooniga abuur ah oo dibadda ah waa mid ka mid ah dariiqyada farsamada ee ugu weyn ee lagu horumarinayo leysarka elektaroonigga ah ee lacag la'aanta ah ee Shiinaha.Waqtigan xaadirka ah, dhammaan afarta sare ee qalabka leysarka elektaroonigga ah ee lacag la'aanta ah ee Shiinaha ayaa qaatay habka hawlgalka abuur dibadda ah.Iyada oo ku saleysan Shanghai Deep Ultraviolet Laser Laser Free Electron iyo Shanghai Soft X-ray Free Electron Laser Facility, saynisyahannadu waxay si isdaba joog ah u gaareen nooca echo-ga caalamiga ah ee ugu horreeya ee nalka iftiinka elektaroonigga ah ee bilaashka ah iyo nooca ugu horreeya ee ultraviolet echo nooca ugu horreeya ee ultraviolet-ka daran.Si loo sii horumariyo abuurka elektarooniga ah ee bilaashka ah ee leysarka dhererka gaaban, kooxda cilmi-baarista waxay si madax-bannaan u soo jeediyeen hannaan cusub oo ah laser elektaroonig ah oo bilaash ah oo leh echo harmonic cascade, kaas oo ay qaadatay Shanghai Soft X-ray Qalabka Laser-ka bilaashka ah nidaamka aasaasiga ah, oo dhamaystiray habka oo dhan laga bilaabo xaqiijinta mabda'a ilaa kor u qaadista iftiinka ee band raajada jilicsan.Natiijooyinka cilmi-baaristu waxay muujinayaan in marka la barbar dhigo habka caadiga ah ee nooca abuurka dibadda, habkani wuxuu leeyahay sifooyin muuqaal ah oo aad u wanaagsan, iyada oo loo marayo qaadashada cilmi-baarayaasha horumarinta madax-bannaan ee teknoolojiyadda ogaanshaha garaaca wadnaha ee ultrafast X-ray (https://doi.org/10.1016) /j.fmre.2022.01.027), Waxqabadka sare ee habkan cusub ee xakamaynta dhererka garaaca wadnaha iyo jiilka garaaca wadnaha ultrafast ayaa la sii xaqiijiyay.Natiijooyinka cilmi-baarista ee ku habboon ayaa bixiya dariiq farsamo oo macquul ah oo loogu talagalay jiilka leysarka elektaroonigga ah ee bilaashka ah ee si buuxda isku xiran ee qaybta subnanometer-ka, waxayna bixin doontaa qalab cilmi-baaris oo ku habboon goobaha raajada aan tooska ahayn ee indhaha iyo kimistariga ultrafast.
Laysarka elektaroonigga ah ee echo harmonic cascade ee bilaashka ah wuxuu leeyahay wax qabad muuqaal wanaagsan: sawirka bidix waa qaabka cascade caadiga ah, sawirka saxda ahna waa habka cascade echo harmonic
hagaajinta dhererka garaaca wadnaha ee raajada iyo jiilka garaaca wadnaha ultrafast waxaa lagu xaqiijin karaa echo harmonic cascade
Waqtiga boostada: Oct-08-2023