Kev ua haujlwm siabultrafast laserqhov loj ntawm ib tug ntiv tes
Raws li tsab xov xwm tshiab tshaj tawm nyob rau hauv phau ntawv Journal Science, cov kws tshawb fawb ntawm City University of New York tau qhia txoj hauv kev tshiab los tsim kev ua haujlwm siab.ultrafast lasersntawm nanophotonics. Qhov no miniaturized hom-xauvlaseremits ib tug series ntawm ultra-luv coherent pulses ntawm lub teeb ntawm femtosecond intervals (trillionths ntawm ib tug thib ob).
Ultrafast hom-xauvlaserstuaj yeem pab qhib cov lus zais ntawm lub sijhawm ceev tshaj plaws, xws li kev tsim lossis rhuav tshem cov ntawv cog lus molecular thaum muaj tshuaj lom neeg, lossis kev nthuav tawm ntawm lub teeb hauv cov xov xwm turbulent. Kev kub ceev, siab pulse siv, thiab dav spectrum kev pab cuam ntawm hom-xauv lasers kuj pab tau ntau photon technologies, xws li optical atomic moos, lom imaging, thiab computers uas siv lub teeb los xam thiab ua cov ntaub ntawv.
Tab sis cov qib siab tshaj plaws-xauv lasers tseem kim heev, lub zog xav tau lub tshuab hluav taws xob uas txwv rau kev siv hauv chav kuaj. Lub hom phiaj ntawm qhov kev tshawb fawb tshiab yog los hloov qhov no mus rau hauv ib qho chip-loj system uas tuaj yeem ua rau loj-tsim thiab xa mus rau hauv thaj chaw. Cov kws tshawb fawb tau siv cov yeeb yaj kiab nyias nyias lithium niobate (TFLN) cov khoom siv tawm tshiab los ua kom zoo thiab tswj tau cov laser pulses los ntawm kev siv cov xov tooj cua sab nraud hluav taws xob rau nws. Pab neeg ua ke nrog lub siab laser nce ntawm chav kawm III-V semiconductors nrog lub zog pulse shaping peev xwm ntawm TFLN nanoscale photonic waveguides los tsim ib lub laser emitting lub siab tso zis siab zog ntawm 0.5 watts.
Ntxiv nrog rau nws qhov loj me me, uas yog qhov loj ntawm lub ntsis ntiv tes, qhov kev ua yeeb yam tshiab-xauv laser kuj nthuav tawm ntau yam khoom uas ib txwm muaj lasers tsis tuaj yeem ua tiav, xws li lub peev xwm los kho qhov tseeb ntawm qhov rov ua dua ntawm cov zis mem tes dhau ib qho. dav ntawm 200 megahertz tsuas yog los ntawm kev kho lub twj tso kua mis tam sim no. Pab neeg vam tias yuav ua tiav cov nti-scale, zaus-ruaj khov zuag los ntawm lub laser lub zog reconfiguration, uas yog ib qho tseem ceeb rau precision sensing. Cov ntawv thov siv tau suav nrog kev siv xov tooj ntawm tes los kuaj xyuas kab mob qhov muag, lossis tshuaj xyuas E. coli thiab cov kab mob txaus ntshai hauv cov zaub mov thiab ib puag ncig, thiab ua kom muaj kev taw qhia thaum GPS puas lossis tsis muaj.
Post lub sij hawm: Jan-30-2024