UPhando olutsha kwilaser yobubanzi obumxinwa

Uphando olutsha kwilaser-linewidth emxinwa

I-laser yobubanzi obumxinwa ibalulekile kuluhlu olubanzi lwezicelo ezinje ngokuchaneka kokuva, i-spectroscopy, kunye nesayensi yobungakanani. Ukongeza kububanzi be-spectral, i-spectral shape nayo yinto ebalulekileyo, exhomekeke kwimeko yesicelo. Umzekelo, amandla kumacala omabini omgca welaser anokwazisa iimpazamo kubuchule bokubona iiqubits kwaye buchaphazele ukuchaneka kweewotshi zeathom. Ngokwengxolo ye-laser frequency, amacandelo e-Fourier eveliswa yimitha ezenzekelayo engena kwi-laserImowudi ihlala iphezulu kune-105 Hz, kwaye la macandelo amisela i-amplitudes kumacala omabini omgca. Ukudibanisa into yokuphucula uHenry kunye nezinye izinto, umda we-quantum, oko kukuthi umda we-Schawlow-Towns (ST), uyachazwa. Emva kokuphelisa ingxolo yobugcisa efana nokungcangcazela kwecango kunye nobude be-drift, lo mda umisela umda osezantsi wobubanzi bomgca obusebenzayo. Ke ngoko, ukunciphisa ingxolo ye-quantum linyathelo eliphambili kuyilo lwelasers emxinwa-linewidth.

Kutshanje, abaphandi baye bavelisa itekhnoloji entsha enokuthi inciphise ububanzi bemiqadi yelaser ngamaxesha angaphezu kwamawaka alishumi. Olu phando lunokuguqula ngokupheleleyo imimandla yekhompuyutha ye-quantum, iiwotshi zeathom kunye nokubonwa kwamaza omxhuzulane. Iqela lophando lisebenzise umthetho-siseko wokuvuselela ukusasazwa kweRaman ukwenza iilaser ukuba zivuyise ukungcangcazela kwefrikhwensi ephezulu ngaphakathi kwemathiriyeli. Isiphumo sokucutha ububanzi bomgca ngamawaka amaxesha aphezulu kuneendlela zemveli. Ngokusisiseko, kuyalingana nokuphakamisa itekhnoloji entsha yokucoca i-laser spectral enokuthi isetyenziswe kwiindidi ezahlukeneyo zeelaser zokufakwayo. Oku kubonisa impumelelo esisiseko kwinkalo yeiteknoloji laser.

Ubuchwephesha obutsha buyisombulule ingxaki yokutshintsha kwexesha lokukhanya okungahleliweyo okubangela ukuhlambuluka kunye nokuchaneka kwemiqadi yelaser. Kwi-laser efanelekileyo, onke amaza okukhanya kufuneka adityaniswe ngokugqibeleleyo-kodwa eneneni, amanye amaza okukhanya angaphambili kancinane okanye emva kwamanye, ebangela ukuguquguquka kwinqanaba lokukhanya. Oku kuguquguquka kwesigaba kuvelisa "ingxolo" kwi-laser spectrum - zenza mfiliba ukuphindaphinda kwelaser kwaye zinciphise ukucoceka kombala wayo. Umgaqo wetekhnoloji yeRaman kukuba ngokuguqula ezi zitenxo zexeshana zibe ziintshukumo ngaphakathi kwekristale yedayimani, ezi ntshukumo zifunxwa ngokukhawuleza kwaye zichithwe (ngaphakathi kweetriliyoni ezimbalwa zesekondi). Oku kwenza ukuba amaza okukhanya asele abe ne-oscillations egudileyo, ngaloo ndlela afezekise ukucoceka okuphezulu kwe-spectral kunye nokuvelisa umphumo obalulekileyo wokunciphisalaser spectrum.