Ucwaningo Olusha mayelanai-laser enobubanzi obuncane
I-laser enobubanzi obuncane ibalulekile ezinhlobonhlobo zezicelo ezifana nokuzwa okunembile, i-spectroscopy, kanye nesayensi ye-quantum. Ngaphezu kobubanzi be-spectral, ukuma kwe-spectral nakho kuyisici esibalulekile, okuncike esimweni sesicelo. Isibonelo, amandla kuzo zombili izinhlangothi zomugqa we-laser angase alethe amaphutha ekuphathweni kwe-optical kwama-qubits futhi athinte ukunemba kwamawashi e-athomu. Ngokuphathelene nomsindo wemvamisa ye-laser, izingxenye ze-Fourier ezikhiqizwa imisebe ezenzakalelayo engena ku-i-laserImodi ivame ukuba ngaphezu kuka-105 Hz, futhi lezi zingxenye zinquma ama-amplitude kuzo zombili izinhlangothi zomugqa. Ukuhlanganisa i-Henry enhancement factor nezinye izici, kuchazwa umkhawulo we-quantum, okungukuthi umkhawulo we-Schawlow-Townes (ST). Ngemva kokuqeda imisindo yobuchwepheshe efana nokudlidliza kwe-cavity kanye nokukhukhuleka kobude, lo mkhawulo unquma umkhawulo ophansi wobubanzi bomugqa obusebenzayo obungafinyeleleka. Ngakho-ke, ukunciphisa umsindo we-quantum kuyisinyathelo esibalulekile ekwakhiweni kwe-ama-laser anobubanzi obuncane.
Muva nje, abacwaningi bathuthukise ubuchwepheshe obusha obunganciphisa ububanzi bomugqa wemisebe ye-laser izikhathi ezingaphezu kwezinkulungwane eziyishumi. Lolu cwaningo lungaguqula ngokuphelele amasimu e-quantum computing, amawashi e-athomu kanye nokutholwa kwamagagasi adonsela phansi. Ithimba locwaningo lisebenzise isimiso sokusabalala kwe-Raman okukhuthaziwe ukuze kuvunyelwe ama-laser ukuthi avuse ukudlidliza kwemvamisa ephezulu ngaphakathi kwezinto. Umphumela wokunciphisa ububanzi bomugqa uphakeme ngokuphindwe kazinkulungwane kunowezindlela zendabuko. Empeleni, kufana nokuphakamisa ubuchwepheshe obusha bokuhlanza i-laser spectral obungasetshenziswa ezinhlotsheni ezahlukene zama-laser okufakwayo. Lokhu kumelela intuthuko eyisisekelo emkhakheni weubuchwepheshe be-laser.
Lobu buchwepheshe obusha buxazulule inkinga yezinguquko zesikhathi zamagagasi okukhanya okungahleliwe ezibangela ukuhlanzeka nokunemba kwemisebe ye-laser ukwehla. Ku-laser efanele, wonke amagagasi okukhanya kufanele avumelane ngokuphelele - kodwa empeleni, amanye amagagasi okukhanya angaphambili kancane noma ngemuva kwamanye, okubangela ukuguquguquka kwesigaba sokukhanya. Lokhu kuguquguquka kwesigaba kudala "umsindo" ku-spectrum ye-laser - kufiphaza imvamisa ye-laser futhi kunciphisa ubumsulwa bayo bombala. Isimiso sobuchwepheshe be-Raman ukuthi ngokuguqula lokhu kungahambi kahle kwesikhathi kube ukudlidliza ngaphakathi kwekristalu yedayimane, lokhu kudlidliza kudonswa ngokushesha futhi kuhlakazeke (ngaphakathi kwezigidigidi ezimbalwa zomzuzwana). Lokhu kwenza amagagasi okukhanya asele abe nokuguquguquka okubushelelezi, ngaleyo ndlela kufezwe ubumsulwa obuphezulu be-spectral futhi kudale umphumela obalulekile wokunciphisa ku-i-spectrum ye-laser.
Isikhathi sokuthunyelwe: Agasti-04-2025