Ukusebenza okuphezulu kwe-laser esheshayo enosayizi wesihloko somunwe

Ukusebenza okuphezului-laser esheshayoubukhulu bomunwe

Ngokwe-athikili entsha esembozweni eshicilelwe kumagazini iSayensi, abacwaningi baseCity University of New York babonise indlela entsha yokudala ukusebenza okuphezulu.ama-laser asheshayoku-nanophotonics. Le modi ye-miniaturized ikhiyiwelaserikhipha uchungechunge lwama- ultra-short coherent pulses okukhanya ngezikhathi ze-femtosecond (ama-trillionths wesekhondi).

Imodi esheshayo-ikhiyiweama-laseringasiza ekuvuleni izimfihlo zezilinganiso zesikhathi ezishesha kakhulu zemvelo, njengokwakheka noma ukunqanyulwa kwamabhondi amamolekyuli ngesikhathi sokusabela kwamakhemikhali, noma ukusabalalisa ukukhanya kumidiya eneziyaluyalu. Isivinini esikhulu, ukuqina kokushaya kwenhliziyo okuphezulu, kanye nokumbozwa kwe-spectrum ebanzi kwama-laser emodi ekhiyiwe nakho kuvula ubuchwepheshe be-photon obuningi, okuhlanganisa amawashi abonakalayo e-athomu, imaging yebhayoloji, namakhompyutha asebenzisa ukukhanya ukuze abale futhi acubungule idatha.

Kodwa ama-lasers akhiywe ngemodi ethuthuke kakhulu asabiza kakhulu, amasistimu edeskithophu adinga amandla anqunyelwe ukusetshenziswa kwaselabhorethri. Umgomo wocwaningo olusha ukuguqula lokhu kube uhlelo olulingana ne-chip olungakhiqizwa ngobuningi futhi lusetshenziswe ensimini. Abacwaningi basebenzise i-lithium niobate yefilimu encane (TFLN) yesikhulumi sezinto ezivelayo ukuze balolonge ngempumelelo futhi balawule ama-laser pulses ngokusebenzisa amasiginali kagesi wefrikhwensi yomsakazo wangaphandle kuyo. Ithimba lihlanganise inzuzo ephezulu ye-laser yama-semiconductors ekilasi III-V namandla asebenzayo okushintsha ukushaya kwenhliziyo kwe-TFLN nanoscale photonic waveguides ukuze kuthuthukiswe i-laser ekhipha amandla aphezulu okukhiphayo angu-0.5 watts.

Ngokungeziwe kusayizi wayo ohlangene, ongusayizi wesihloko somunwe, i-laser esanda kukhonjiswa ekhiywe ngemodi futhi ikhombisa izinto eziningi ama-laser endabuko angeke akwazi ukuzifeza, njengokukwazi ukushuna ngokunembile izinga lokuphindaphinda kwe-pulse ephumayo ububanzi obungama-megahertz angu-200 nje ngokulungisa iphampu yamanje. Ithimba lithemba ukuzuza isikali se-chip, umthombo wekama ozinzile ngohlelo lokumisa kabusha olunamandla lwe-laser, olubalulekile ekuzweni okunembayo. Izinhlelo ezisebenzayo zihlanganisa ukusetshenziswa komakhalekhukhwini ukuhlonza izifo zamehlo, noma ukuhlaziya i-E. coli namagciwane ayingozi ekudleni nasendaweni ezungezile, nokuvumela ukuzulazula lapho i-GPS ilimele noma ingatholakali.