Uhlobo olusha lwe-photodetector luthola izimpawu zokukhanya ezibuthakathaka ebhendini engu-2μm

Uhlobo olusha lweumshini wokuthola izithombeithola izimpawu zokukhanya ezibuthakathaka ebhendini engu-2μm

Emikhakheni eminingi esezingeni eliphezulu yocwaningo lwesayensi kanye nezicelo zezimboni, ukubanjwa nokuhlaziywa okunembile kwezibonakaliso zokukhanya ezibuthakathaka bekulokhu kuyisihluthulelo sokushayela ubuchwepheshe obusha. Ikakhulukazi ebhendini eliphakathi le-infrared eliyi-2-micron (μm), ukumuncwa kweminwe kwama-molecule egesi, izici zokushaya kwe-laser ezintsha, kanye nolwazi olujulile lwezicubu zezinto eziphilayo konke kuqukethwe kulesi signali yokukhanya ebonakala ibuthakathaka kodwa icebile ngolwazi. Kodwa-ke, ubunzima bokuthwebula isignali yokukhanya ebuthakathaka, ukucindezela ukuphazamiseka kwemvelo, kanye nobunzima obukhulu bokuhlanganiswa kwesistimu bekulokhu kuyizithiyo ezifihliwe ocwaningweni lwesayensi kanye nezicelo zobunjiniyela.

Namuhla, sikulethela umkhiqizo ohlangabezana nezidingo zalolu hlelo lokusebenza, i-R-PR-1G type 2μm analog light detection photodetector, ezinikele ekubeni “yi-dawner” emkhakheni wokutholwa kwesignali yokukhanya kwe-mid-infrared.

I-R-PR-2μmimojuli ye-photodetectorihlanganisa ngobuhlakani isivinini esiphezulu esithuthukisiweIsitholi sezithombe se-InGaAsnge-amplifier enomsindo ophansi, efana ne-"super sensory" eyenzelwe ukulinganisa okunembile kokukhanya. Ukusebenza kwayo okuvelele kubonakala ebangeni elibanzi lempendulo ye-spectral elingu-900-2300nm, elingamboza ama-band amaningi ayinhloko aphakathi kwe-infrared. Kungakhathaliseki ukuthi ukumuncwa okuphawulekayo kwama-molecule amanzi emoyeni noma umphumela wamaza okukhanya ohlukile yi-TM-doped kanye ne-Ho fiber lasers, konke kungabanjwa ngokunembile.

Akukhona lokho kuphela, i-module ye-R-PR-2μm photodetector idume ngokukhula kwayo okuphezulu, ukuzwela okuphezulu kanye nokuba bushelelezi kwe-gain flatness okuhle kakhulu. Ngisho nama-pulse e-laser aphansi kakhulu e-picosecond-level mid-infrared angabonakala ngokucacile ngayo, okuqinisekisa ukudluliswa kwesignali okungenakulahlekelwa. Okwamanje, isici sayo somsindo ophansi sicindezela ngempumelelo ukuphazamiseka kwangemuva, sinikeze abacwaningi idatha eluhlaza ehlanzekile nethembekile. I-module inesakhiwo esiqinile, iyakwazi ukuvimbela ukuphazamiseka kwe-electromagnetic, futhi isekela okokufaka kwe-fiber yemodi eyodwa noma i-free-space coupling, kanye nokukhipha kwe-SMA connector, okusiza kakhulu ukuhlanganiswa nokusetshenziswa. Okubaluleke kakhulu ukusho ukuthi iphinde isekele ukwenza ngokwezifiso ngokusekelwe ezidingweni ezithile zamakhasimende. Isibonelo, ubuso be-PIN tube eyakhelwe ngaphakathi buyinketho, bubonisa izinga layo eliphezulu lokuguquguquka kanye nokuzivumelanisa nezimo. Nakuba ukukhanya kuncane, kusengalandelelwa. I-module ye-R-PR-2μm photodetector yenza ukukhanya okungabonakali ekusebenzeni kubonakale, kulinganiswe futhi kusetshenziswe.