Peking University pom tau ib qho kev txuas ntxiv musLaser Taume dua 1 square micron
Nws yog ib qho tseem ceeb uas tsim cov roj av txuas ntxiv nrog cov khoom siv ntaus ntawv tsawg dua 1μm2 kom tau raws li kev siv hluav taws xob tsawg dua ntawm kev ua kom zoo dua ntawm kev ua kom zoo dua qub (<10 fJ bit-1). Txawm li cas los xij, raws li cov ntaus ntawv loj me me, kho qhov muag thiab cov khoom poob nce ntau, yog li ua kom tiav sub-micron nqus ntawm laser nqus yog qhov nyuaj heev. Nyob rau hauv cov ntaub ntawv tsis ntev los no, halide cov ntaub ntawv tshaj lij tau txais cov chaw ua haujlwm nrawm nrawm dua vim lawv qhov kev nce qib siab thiab cov cim zoo nkauj polariton. Cov cuab yeej cuab yeej cuab yeej ntawm cov laser txuas ntxiv txuas ntxiv yog tseem muaj ntau dua li 10μm2, thiab subsricron laser txhua yam muaj zog nrog lub zog siab dua los txhawb.
Hauv kev teb rau cov kev sib tw no, Pawg Kev Tshawb Fawb ntawm Zhang Quar ntawm cov ntaub ntawv tshawb fawb kom ua tiav cov khoom siv kho tshiab ua ke nrog cov khoom siv ntaus ntawv nrog 0.65μm2. Nyob rau tib lub sijhawm, lub photon yog qhia tawm. Lub tshuab ntawm cov kev ua kom zoo sab nrauv hauv submicron txuas ntxiv mus ntawm cov txheej txheem tshiab rau kev txhim kho me me lasyoductor lasers. Cov txiaj ntsig ntawm kev kawm, ntu "nthwv dej txuas ntxiv mus lasers nrog cov khoom siv hauv qab no 1 μm2," tau nyuam qhuav luam tawm hauv cov ntaub ntawv siab.
Hauv txoj haujlwm no, Inorganic Perovskite CSPBBR3 tib lub tshuab siv siv lead ntawm sapphire substrate los ntawm cov tshuaj vapor deposition. Nws tau pom tias cov kev sib txuas muaj zog ntawm cov yeeb yaj kiab uas muaj zog nrog lub suab microcavity photons ntawm chav tsev kub ua rau kev tsim ntawm cov lus ntawm polaritonic. Los ntawm kev taug txuj kev tseeb, xws li linear rau qhov tsis sib xws ntawm qhov pib ntawm kev hloov pauv thiab kev hloov pauv nqaim thiab kev hloov pauv ntawm CSPBBR3 yog tsawg li 0.65μm2. Nyob rau tib lub sijhawm, nws tau pom tias qhov pib ntawm Submicron Laser tau tshwm sim rau qhov ntawd ntawm qhov loj measer qhov chaw, thiab muaj peev xwm txawm tias qis dua (daim duab 1).
Daim duab 1. Txuas ntxiv tawm pumped submicron cspbbr3Laser Lub Teeb
Ntxiv mus, cov haujlwm no tau tshawb txog ob qho tib si sim thiab ua raws cov txheej txheem, thiab qhia cov tshuab uas zoo siab hauv kev ua kom tiav ntawm Submron Nruam Nrov. Kev txhim kho lub photon-zoo siab txuas rau hauv submicron perovskites tau tshwm sim nyob rau hauv cov pab pawg nce mus txog 80, uas muaj ntau hom nce los them rau hom poob. Qhov no kuj ua rau perovskite subsron laser peev txheej nrog qhov zoo dua microcavity zoo factor thiab nqaim emission Linewidth (Daim Duab 2). Tus mechanism tseem muab cov kev pom tshiab rau hauv kev txhim kho me me-qhov loj me, cov lashy-bresers raws li lwm cov ntaub ntawv slicatonductor.
Daim duab 2. Mechanism ntawm Sub-Micron Laser Tau Siv Cov Kev Lom Zem Zoo Nkauj Polarizons
Zaj nkauj Jiepeng, ib 2020 Zibho cov tub ntxhais kawm ntawv los ntawm cov ntaub ntawv txuj ci thiab Engineering ntawm Peking University, yog thawj tus kws sau ntawv, yog thawj tus kws sau ntawv yog thawj daim ntawv. Zhang Qing thiab Xiong Qihua, Xib Fwb ntawm physics ntawm tsinghua University, yog cov kws sau ntawv sib tham. Txoj haujlwm tau txais kev txhawb nqa los ntawm National National Science Foundation ntawm Tuam Tshoj thiab Beijing Science Foundation rau cov tub ntxhais hluas zoo.
Lub Sijhawm Post: Sep-12-2023