Kev Tshawb Fawb Tshiab txoglaser kab nqaim
Cov laser nqaim-kab dav yog qhov tseem ceeb hauv ntau yam kev siv xws li kev ntsuas qhov tseeb, spectroscopy, thiab quantum science. Ntxiv nrog rau qhov dav spectral, cov duab spectral kuj yog ib qho tseem ceeb, uas nyob ntawm qhov xwm txheej ntawm daim ntawv thov. Piv txwv li, lub zog ntawm ob sab ntawm kab laser yuav ua rau muaj qhov yuam kev hauv kev tswj hwm qhov muag ntawm qubits thiab cuam tshuam rau qhov tseeb ntawm cov moos atomic. Hauv cov nqe lus ntawm lub suab nrov laser, cov khoom Fourier tsim los ntawm kev tawg paj hlwb nkag mus rau hauvlaserhom feem ntau siab dua 105 Hz, thiab cov khoom no txiav txim siab qhov amplitudes ntawm ob sab ntawm kab. Ua ke nrog Henry enhancement factor thiab lwm yam, qhov txwv quantum, uas yog Schawlow-Townes (ST) txwv, yog txhais. Tom qab tshem tawm cov suab nrov xws li cavity vibration thiab ntev drift, qhov txwv no txiav txim siab qhov txwv qis dua ntawm qhov dav ntawm kab ua tau zoo. Yog li ntawd, txo qis quantum suab nrov yog ib kauj ruam tseem ceeb hauv kev tsim qauv ntawmcov lasers uas muaj kab nqaim.
Tsis ntev los no, cov kws tshawb fawb tau tsim ib txoj kev siv tshuab tshiab uas tuaj yeem txo qhov dav ntawm cov kab laser ntau dua kaum txhiab npaug. Kev tshawb fawb no yuav hloov pauv tag nrho cov teb ntawm kev suav lej quantum, lub moos atomic thiab kev tshawb pom nthwv dej gravitational. Pab pawg tshawb fawb tau siv lub hauv paus ntsiab lus ntawm kev txhawb nqa Raman scattering kom pab cov lasers ua kom muaj kev co siab dua hauv cov khoom siv. Qhov cuam tshuam ntawm kev nqaim qhov dav ntawm cov kab yog ntau txhiab npaug ntau dua li cov txheej txheem ib txwm muaj. Yeej, nws yog sib npaug rau kev thov cov thev naus laus zis tshiab laser spectral purification uas tuaj yeem siv rau ntau hom lasers nkag. Qhov no sawv cev rau qhov kev tawg tseem ceeb hauv thaj teb ntawmkev siv tshuab laser.
Cov thev naus laus zis tshiab no tau daws qhov teeb meem ntawm kev hloov pauv lub sijhawm ntawm lub teeb me me uas ua rau lub teeb laser tsis huv thiab raug. Hauv lub laser zoo tagnrho, txhua lub teeb yuav tsum tau sib dhos zoo meej - tab sis qhov tseeb, qee lub teeb me me ua ntej lossis tom qab lwm tus, ua rau muaj kev hloov pauv ntawm theem ntawm lub teeb. Cov kev hloov pauv theem no tsim "suab nrov" hauv lub laser spectrum - lawv ua rau lub laser zaus tsis meej thiab txo nws cov xim purity. Lub hauv paus ntsiab lus ntawm Raman thev naus laus zis yog tias los ntawm kev hloov cov kev tsis sib xws ntawm lub sijhawm no mus rau hauv kev co hauv lub pob zeb diamond siv lead ua, cov kev co no raug nqus thiab dissipated sai (hauv ob peb trillionths ntawm ib pliag). Qhov no ua rau cov teeb seem muaj cov oscillations du, yog li ua tiav cov spectral purity siab dua thiab tsim kom muaj qhov cuam tshuam loj rau ntawmlaser spectrum.
Lub sijhawm tshaj tawm: Lub Yim Hli-04-2025