Ileza esebenza ngokukhawuleza kakhulu enobukhulu obufana nencam yomnwe

Ukusebenza okuphezului-laser ekhawulezayo kakhuluubungakanani bencam yomnwe

Ngokutsho kwenqaku elitsha elikwiphepha elingaphandle elipapashwe kwijenali iScience, abaphandi kwiYunivesithi yaseSixeko saseNew York babonise indlela entsha yokwenza ukusebenza okuphezuluiileza ezikhawulezayo kakhulukwi-nanophotonics. Le ndlela incinci ivaliweilezaikhupha uthotho lwee-ultra-short coherent pulses zokukhanya kwi-femtosecond intervals (trillionths of a second).

Imodi ekhawulezayo kakhulu itshixiweiileyizainokunceda ekutyhileni iimfihlo zexesha elikhawulezayo lendalo, njengokwakheka okanye ukuqhekeka kweebhondi zemolekyuli ngexesha leempendulo zeekhemikhali, okanye ukusasazeka kokukhanya kwimidiya eguquguqukayo. Isantya esiphezulu, ubunzulu be-peak pulse, kunye nokugubungela ngokubanzi kwe-laser ezivaliweyo kwimode kukwavumela ubuchwepheshe obuninzi be-photon, kubandakanya iiwotshi ze-atomic ze-optical, i-biological imaging, kunye neekhompyutha ezisebenzisa ukukhanya ukubala nokucubungula idatha.

Kodwa iilaser ezikwimowudi eziphucukileyo zisabiza kakhulu, zifuna amandla kakhulu, kwaye zisetyenziswa kuphela kwilebhu. Injongo yophando olutsha kukuguqula oku kube yinkqubo enobukhulu be-chip enokuveliswa ngobuninzi kwaye isasazwe kwintsimi. Abaphandi basebenzise iqonga lezinto eziphumayo le-thin-film lithium niobate (TFLN) ukuze bayile kwaye balawule ngokuchanekileyo iipulse zelaser ngokusebenzisa imiqondiso yombane yerediyo yangaphandle kuyo. Iqela lidibanise i-laser gain ephezulu yee-semiconductors zeklasi ye-III-V kunye nobuchule bokubumba i-pulse obusebenzayo bee-waveguides ze-photonic ze-TFLN nanoscale ukuphuhlisa i-laser ekhupha amandla aphezulu e-0.5 watts.

Ukongeza kubukhulu bayo obuncinci, obulingana nencam yomnwe, i-laser entsha evaliweyo yemode ikwabonisa inani leempawu ezingenakufunyanwa zii-laser zemveli, njengokukwazi ukulungisa ngokuchanekileyo izinga lokuphindaphinda kwe-output pulse kuluhlu olubanzi lwe-200 megahertz ngokulungelelanisa nje umbane wepompo. Iqela linethemba lokufikelela kumthombo we-chip-scale, ozinzileyo rhoqo ngokusebenzisa uhlengahlengiso olunamandla lwe-laser, olubaluleke kakhulu ekuqondeni ngokuchanekileyo. Izicelo ezisebenzayo ziquka ukusetyenziswa kweefowuni eziphathwayo ukuxilonga izifo zamehlo, okanye ukuhlalutya i-E. coli kunye neentsholongwane eziyingozi ekutyeni nakwindalo esingqongileyo, kunye nokwenza kube lula ukuhamba xa i-GPS yonakele okanye ingafumaneki.