Micro pab kiag li lawm thiab ntau npaum lasers

Cov khoom siv micro thiab ua haujlwm zoo dualasers
Cov kws tshawb fawb Rensselaer Polytechnic Institute tau tsim ib qholaser ntaus ntawvuas tsuas yog qhov dav ntawm tib neeg cov plaub hau, uas yuav pab physicists kawm txog cov khoom tseem ceeb ntawm cov teeb meem thiab lub teeb. Lawv cov hauj lwm, luam tawm nyob rau hauv prestigious scientific journals, kuj yuav pab tau tsim kom muaj zog lasers rau siv nyob rau hauv cov teb xws li tshuaj mus rau kev tsim.

Covlaserntaus ntawv yog ua los ntawm cov khoom tshwj xeeb hu ua photonic topological insulator. Photonic topological insulators muaj peev xwm coj cov photons (cov nthwv dej thiab cov khoom uas ua rau lub teeb) los ntawm kev sib cuam tshuam tshwj xeeb hauv cov khoom, thaum tiv thaiv cov khoom tawg ntawm cov khoom nws tus kheej. Vim yog cov cuab yeej no, topological insulators pab kom ntau photons ua haujlwm ua ke tag nrho. Cov cuab yeej no tseem tuaj yeem siv los ua topological "quantum simulators," tso cai rau cov kws tshawb fawb los kawm txog quantum phenomena - cov cai ntawm lub cev uas tswj hwm qhov teeb meem ntawm cov nplai me me - hauv mini-labs.
“Qhovphotonic topologicalinsulator peb ua yog tshwj xeeb. Nws ua haujlwm ntawm chav tsev kub. Qhov no yog ib qho kev tawg loj. Yav dhau los, cov kev tshawb fawb no tsuas yog ua tau los ntawm kev siv cov khoom siv loj, kim kom txias cov khoom hauv lub tshuab nqus tsev. Ntau qhov kev tshawb fawb LABS tsis muaj cov cuab yeej zoo li no, yog li peb lub cuab yeej tso cai rau ntau tus neeg los ua qhov kev tshawb fawb physics tseem ceeb hauv chav kuaj, "said Rensselaer Polytechnic Institute (RPI) tus pab xibfwb hauv Department of Materials Science thiab Engineering thiab cov laus. tus sau txoj kev kawm. Txoj kev tshawb no muaj cov qauv me me, tab sis cov txiaj ntsig tau qhia tias cov tshuaj tshiab tau pom tias muaj txiaj ntsig zoo hauv kev kho cov kab mob tsis tshua muaj caj ces. Peb tos ntsoov yuav ua kom pom tseeb ntxiv cov txiaj ntsig no hauv kev sim tshuaj ntsuam xyuas yav tom ntej thiab muaj peev xwm ua rau muaj kev xaiv kho tshiab rau cov neeg mob uas muaj tus kab mob no. " Txawm hais tias tus qauv loj ntawm txoj kev tshawb no kuj me me, qhov kev tshawb pom qhia tias cov tshuaj tshiab no tau pom tias muaj txiaj ntsig zoo hauv kev kho cov kab mob tsis tshua muaj caj ces. Peb tos ntsoov yuav ua kom pom tseeb ntxiv cov txiaj ntsig no hauv kev sim tshuaj ntsuam xyuas yav tom ntej thiab muaj peev xwm ua rau muaj kev xaiv kho tshiab rau cov neeg mob uas muaj tus kab mob no. "
"Qhov no tseem yog ib kauj ruam loj rau kev txhim kho ntawm lasers vim tias peb chav ntsuas kub ntawm cov cuab yeej siv (lub zog yuav tsum tau ua kom nws ua haujlwm) yog xya npaug qis dua li cov khoom siv cryogenic yav dhau los," cov kws tshawb fawb ntxiv. Lub koom haum Rensselaer Polytechnic cov kws tshawb fawb tau siv tib cov txheej txheem siv los ntawm kev lag luam semiconductor los ua microchips los tsim lawv cov cuab yeej tshiab, uas koom nrog cov khoom sib txawv ntawm cov txheej txheem los ntawm txheej, los ntawm atomic mus rau qib molecular, los tsim cov qauv zoo tagnrho nrog cov khoom tshwj xeeb.
Ua tuscov khoom siv lasers, cov kws tshawb fawb tau loj hlob ultra-nyias daim hlau ntawm selenide halide (ib qho siv lead ua los ntawm cesium, txhuas thiab chlorine) thiab etched qauv polymers rau lawv. Lawv sandwiched cov pob zeb siv lead ua thiab cov polymers ntawm ntau yam khoom siv oxide, ua rau ib qho khoom txog 2 microns tuab thiab 100 microns ntev thiab dav (qhov dav ntawm tib neeg cov plaub hau yog 100 microns).
Thaum cov kws tshawb fawb ci lub laser ntawm lub lasers ntaus ntawv, ib tug luminous daim duab peb sab qauv tshwm nyob rau hauv cov khoom tsim interface. Tus qauv yog txiav txim los ntawm cov cuab yeej tsim thiab yog qhov tshwm sim ntawm cov yam ntxwv topological ntawm lub laser. "Kev muaj peev xwm kawm quantum phenomena ntawm chav tsev kub yog qhov kev cia siab zoo siab. Xib fwb Bao txoj haujlwm tshiab qhia tau hais tias cov khoom siv engineering tuaj yeem pab peb teb qee cov lus nug loj tshaj hauv kev tshawb fawb. " Rensselaer Polytechnic Institute engineering tus thawj coj tau hais.