Silicon-based quantum dot lasers ua ke nrog silicon waveguide monoliths
Silicon-based optoelectronic chips muaj ntau yam kev siv hauv kev txawj ntse, cov ntaub ntawv hyperscale, kev ua haujlwm siab, lub teeb-emitting radar (LIDAR) thiab microwave photonics. Monolithically integrated silicon-raws li lasers muaj qhov zoo ntawm kev siv hluav taws xob tsawg thiab kev sib koom ua ke siab, uas yog qhov kev txhim kho yav tom ntej ntawm kev sib txuas ntawm qhov muag thiab kev sib txuas lus ceev ceev. Nyob rau hauv xyoo tas los no, qhov ncaj qha epitaxial loj hlob ntawm pab pawg III-V quantum dot (QD) lasers ntawm silicon substrates tau ua tau zoo kawg li, nteg lub hauv paus ruaj khov rau silicon-raws li optoelectronic kev koom ua ke, tab sis monolithic kev koom ua ke ntawm silicon-based lasers thiab optoelectronic li. tseem tsis tau paub.
Jianjun Zhang, Ting Wang, thiab Zihao Wang ntawm lub koom haum ntawm Physics, Suav Academy ntawm Sciences (IPS) / National Research Center for Condensed Matter Physics (NRCP) hauv Beijing tau tsom mus rau silicon-based on-chip lub teeb qhov chaw loj- scale silicon-raws li optoelectronic kev koom ua ke nyob rau hauv xyoo tsis ntev los no, thiab tau ua ib tug tseem ceeb kev vam meej nyob rau hauv cov kev taw qhia ntawm silicon-raws li integratable lasers, uas yog nyob rau hauv lub forefront ntawm lub thoob ntiaj teb kev tshawb fawb teb. Nws tus neeg sawv cev ua haujlwm nyob rau xyoo tas los no suav nrog kev paub txog qhov dav tshaj plaws ntawm lub tiaj tus quantum dot zaus comb laser, nrog rau kev sib kis ntawm 4.8 Tbit / s rau plaub-laser array (Photo. Res. 2022; 10, 1308), thiab realization ntawm epitaxial pab pawg III-V quantum dot lasers ntawm silicon nrog nqaim linewidth los ntawm theem-modulated nws tus kheej-txheej locking (Photon. Res. 2022; 10, 1308), as well as realization of epitaxial group III-V quantum dot lasers on silicon los ntawm theem-modulated nws tus kheej-txhaj tshuaj locking (Photon. Res. 2022; 10, 1840); thiab pioneered lub realization ntawm SOI-raws li monolithically integrated InAs quantum dot ib transverse hom lasers (ACS Photon. 2023; 10, 1813). Pab neeg no tsis ntev los no tau koom tes nrog Yikai Su thiab Xuhan Guo ntawm Shanghai Jiaotong University thiab Wenqi Wei ntawm Songshan Lake Materials Laboratory, thiab lwm yam. Rau lub hauv paus ntawm pab neeg yav dhau los high-quality silicon-raws li III-V cov ntaub ntawv, pab neeg no npaj ib silicon- Raws li embedded epitaxy txoj kev los koom ua ke InAs/GaAs quantum dot lasers thiab silicon waveguides ntawm tib SOI substrate (Fig. 1), uas ntse dhau lub teeb los ntawm silicon-raws li lasers los ntawm cov kws tshawb fawb tau ua tiav lub teeb los ntawm silicon-based laser. mus rau ib tug silicon waveguide los ntawm lub endface, realizing lub monolithic kev koom ua ke ntawm laser thiab waveguide thawj zaug, uas tau soj ntsuam los ntawm tus neeg saib xyuas raws li "ib qho kev tshawb fawb ua hauj lwm zoo heev nrog zoo scientific thiab technological cuam tshuam, thiab qhov no yog ib tug tseem ceeb kev vam meej nyob rau hauv lub teb ntawm integrated photonics."
Cov kws tshawb fawb tau tshawb xyuas qhov embedded laser's LI nkhaus ntawm qhov sib txawv ntawm qhov kub thiab txias thiab lub zog tso zis tom qab coupling. Lub laser excitation kub nyob rau hauv nruam-yoj (CW) tam sim no ua hauj lwm hom yuav ua tau mus txog 95 degree los yog ntau tshaj, nrog ib tug chav tsev kub qhov pib tam sim no ntawm txog 50 mA, thiab lub siab tshaj plaws tso zis hwj chim ntawm 37 mW ntawm txhaj tshuaj tam sim no ntawm 250 mA . Ntawm qhov kev txhaj tshuaj tam sim no ntawm 210 mA, lub laser embedded outputs lub hwj chim kho qhov muag ntawm 6.8 mW txuas rau silicon waveguide (Fig. 2). Tsis tas li ntawd, nws tau pom tias ntug couplers nrog ntau lub tswv yim tapered muaj ntau dua coupling efficiency thiab zoo alignment kam rau ua dua li cov reverse-tapered couplers nrog ib tug ntsis vim lawv qhov chaw me me uas zoo ib yam li hom profile ntawm lub laser.
Cov txiaj ntsig ntawm txoj kev tshawb no tau luam tawm tsis ntev los no hauv Lub Teeb: Kev Tshawb Fawb & Daim Ntawv Thov (Lub Teeb. Sci. Appl. 12, 84 (2023)), nrog thawj tus kws sau ntawv Wenqi Wei, tus kws tshawb fawb tom qab kawm tiav ntawm Lub Tsev Kawm Ntawv ntawm Physics, CAS (tam sim no tus kws tshawb fawb koom nrog. ntawm Songshan Lake Materials Laboratory), Majestic Yang, tus kws kho mob cov tub ntxhais kawm, Hao Zi, tus kws tshawb fawb koom nrog, thiab An He, tus kws kho mob ntawm Shanghai Jiaotong University. Dr. Hao Wang, Associate Researcher, thiab An He, Ph. Cov kws sau ntawv sib xws yog Cov Neeg Tshawb Fawb Kev Tshawb Fawb Jianjun Zhang, Associate Research Fellow Ting Wang, Prof. Yikai Su thiab Associate Prof. Xuhan Guo.
Cov haujlwm tshawb fawb saum toj no tau txais kev txhawb nqa los ntawm National Key Research thiab Development Program ntawm Tuam Tshoj, National Natural Science Outstanding Youth Fund thiab Cov Nyiaj Txiag Siab Tshaj Plaws, thiab Pawg Neeg Saib Xyuas Hluas ntawm Suav Academy ntawm Kev Tshawb Fawb.
Monolithic kev koom ua ke ntawm Silicon Based Quantum Dot Lasers nrog Silicon Waveguides
Daim duab 1. Laser thiab waveguide monolithic integrated ntaus ntawv
Daim duab 2. Kev ua haujlwm ntawm SOI-raws li kev sib xyaw III-V quantum dot lasers
