Laser wavelengths xav tau rau ntau qhov kev sim siab tshaj plaws niaj hnub no, tshwj xeeb tshaj yog nyob rau hauv qhov pom, yog qhov nyuaj rau qhov chaw me me photonic integrated circuits (PICs). Tab sis US National Institute of Standards and Technology (NIST) cov kws tshawb fawb photonics thiab cov npoj yaig ntawm Octave Photonics yog tus thawj coj kev daws teeb meem rau qhov teeb meem kev nkag mus rau lub wavelength no-thiab tseem hais txog cov teeb meem los koom ua ke sib txawv photonic functions los txhawb kev hloov kho qhov muag, routing, thiab filtering
Ib txoj hauv kev niaj hnub no yog muab cov ntaub ntawv sib txawv photonics los sim ua kom cov haujlwm sib txawv thiab siv zog uas lawv muaj nyob, tab sis tsis muaj ib qho khoom siv tuaj yeem ua rau txhua qhov ntsuas xav tau rau kev siv cov ntawv thov tshiab.
Grant M. Brodnik, tus kws kho mob hauv NIST's Quantum thiab Nonlinear Nanophotonics Group hais tias "Peb txoj haujlwm tau txais kev tshoov siab los ntawm lub hom phiaj siab ntawm kev ua tiav 'txhua lub wavelength lasers,' "Thiab peb tau pom lwm yam kev ua haujlwm zoo li zaus combs thiab supercontinuum tiam, vim tias lub platform txhawb nqa lawv ncaj qha. Cov peev txheej no ua lub luag haujlwm tseem ceeb hauv ntau daim ntawv thov tseem ceeb."
Ua tsaug, nonlinear optics
Txhawm rau kom ncav cuag qhov nrawm nrawm (AI) thiab quantum daim ntawv thov thov, kev hloov ntawm electrons mus rau photons yog qhov tseem ceeb heev -thiab yog li chipscale "txhua lub wavelength" lasers.
Kev piav qhia luv luv ntawm pab pawg txoj hauv kev tshiab: Nws pib nrog tus qauv silicon wafer coated nrog silicon dioxide (iav) thiab lithium niobate, cov khoom siv tsis yog kab uas tuaj yeem hloov xim ntawm lub teeb nkag mus rau nws. Ntxiv cov hlau ua rau cov lithium niobate tuaj yeem hu xovtooj mus rau hluav taws xob- rau kev hloov ib xim ntawm lub teeb rau lwm tus. Cov hlau zoo sib xws-lithium niobate interfaces tuaj yeem tso cai rau kev hloov pauv ntawm lub teeb nrawm (xav tias siab- kev khiav ceev thiab cov ntaub ntawv ua haujlwm).
Depositing complex qauv ntawm tantalum pentoxide, aka tantala, ncaj qha mus rau lwm lub photonic circuitry tso cai rau ntau yam photonic platforms khiav lag luam hauv kev hais kwv txhiaj. Tantala yog cov khoom siv tsis muaj zog thiab ua tau zoo rau kev ua haujlwm pom qhov ntev. "Qhov tseem ceeb, nws muaj cov khoom siv txaus siab (txog rau nws cov khoom tsim) uas ua rau nws txaus siab rau kev sib koom ua ke nrog lwm cov ntaub ntawv photonic," hais Brodnik.
Thaum cov kws tshawb fawb tau tsim cov ntaub ntawv saum toj ntawm ib leeg hauv ib pawg 3D, lawv tau xaus nrog ib lub nti uas ua haujlwm tau zoo ntawm cov txheej txheem. Cov nti no ua ke nrog tantala lub teeb tswj lub peev xwm nrog lithium niobate qhov kev tswj hwm.
Nonlinear optics yog tam sim no "tsis yog-yog li-cov ntses zais cia" physics lawv leverage "kom ua cov xim tshiab ntawm lub teeb tawm ntawm ib qho xim uas peb muab tso rau hauv," piav qhia Brodnik. "Yog tias koj thaij duab nrog lub koob yees duab, koj tsis xav kom cov xim ntawm cov duab hloov pauv thaum dhau los ntawm lub lens. Tab sis nrog cov ntaub ntawv nonlinear ntawm lub zog kho qhov muag siab muab los ntawm lasers, nws yog qhov tshwm sim tiag tiag. Nws yog cov txheej txheem tseem ceeb uas siv lub rooj zaum -scale lasers uas ua ntau xim xim niaj hnub no. Peb siv cov tswv yim no -tab sis nrog photonic circuitry me me ntawm cov khoom siv hauv cov nplej.
Qhov zoo tshaj plaws ntawm qhov kev ua haujlwm no rau Brodnik yog pom "tshiab, feem ntau dazzling xim ntawm lub teeb tawm ntawm peb cov khoom siv los ntawm kev hloov lub teeb pom kev zoo (uas tsis pom ntawm peb lub qhov muag)," nws hais. "Hauv chav kuaj, nrog lub nti zaum ntawm lub sijhawm sim, peb maj mam hu rau hauv cov haujlwm tsis ua haujlwm thiab, boom, vibrant xiav -ntsuab pib ci hla lub nti. Ntawm cov cuab yeej tom ntej, peb ua rau xiav -violet. Nws zoo nkaus li zoo li khawv koob."
Lawv txoj haujlwm "nteg lub hauv paus thiab ua kom pom lub peev xwm ntawm lub platform," hais tias Brodnik. "Peb yeej yuav ua haujlwm los txhim kho kev ua tau zoo ntawm cov qauv tsim uas twb muaj lawm, tab sis lub platform qhib kev ua haujlwm tshiab thiab tsim cov pob qhov rooj uas peb zoo siab los tshawb nrhiav."
Ntau daim ntawv thov uas cuam tshuam nrog kev hloov pauv ntawm atomic -xav quantum sensing thiab xam -yuav tsum tau lub teeb ntawm wavelengths hla qhov pom thiab ze ntawm -infrared wavebands. "Cov ntawv thov uas xav tau kom sai sai thiab hloov lub teeb rau / tawm, zoo li cov ntaub ntawv kho qhov muag thiab kev suav, tuaj yeem tau txais txiaj ntsig los ntawm lub platform thiab los ntawm kev siv lwm cov haujlwm physics cov ntaub ntawv muab," Brodnik hais. "Cov neeg siv khoom siv thev naus laus zis yog kab tias lwm daim ntawv thov. Muaj ntau ntau ntxiv -tseem ceeb peb tseem tsis tau xav txog, uas tam sim no tuaj yeem txiav txim siab thiab tsim los ntawm cov zej zog kev tshawb fawb."
Pab neeg no muaj "ib tug puv tes ntawm kev zoo siab photonic architectures tam sim no nyob rau hauv cov theem tsim, uas yuav tsum muaj tag nrho cov tswv cuab ntawm lub peev xwm peb lub platform txhawb," hais tias Brodnik. "Peb kuj zoo siab los koom tes nrog cov npoj yaig thiab lwm cov kws tshawb fawb uas tau coj peb cov tswv yim tshiab thiab cov ntawv thov peb tej zaum tsis tau xav txog lossis xav tau kev sib koom tes los ua kom tiav. Lub sijhawm zoo siab."
