Kupita patsogolo kwaposachedwa pakupanga njira zopangira laser ndi kafukufuku watsopano wa laser

Kupita patsogolo kwaposachedwa pakupanga makina opangira laser ndi zatsopanokafukufuku wa laser
Posachedwapa, gulu lofufuza la Pulofesa Zhang Huaijin ndi Pulofesa Yu Haohai wa State Key Laboratory of Crystal Materials of Shandong University ndi Pulofesa Chen Yanfeng ndi Pulofesa He Cheng wa State Key Laboratory of Solid Microstructure Physics of Nanjing University agwira ntchito limodzi kuti athetse vutoli ndipo apereka lingaliro la njira yopangira laser ya phoon-phonon collaborative pumping, ndipo atenga kristalo ya laser yachikhalidwe ya Nd:YVO4 ngati chinthu choyimira kafukufuku. Kutulutsa kwapamwamba kwa laser ya superfluorescence kumapezeka podutsa malire a mphamvu ya ma electron, ndipo ubale weniweni pakati pa malire a laser generation ndi kutentha (nambala ya phonon ndi yogwirizana kwambiri) wawululidwa, ndipo mawonekedwe a mawuwo ndi ofanana ndi lamulo la Curie. Kafukufukuyu adasindikizidwa mu Nature Communications (doi:10.1038/ S41467-023-433959-9) pansi pa dzina lakuti "Photon-phonon collaboratively pumped laser". Yu Fu ndi Fei Liang, ophunzira a PhD mu kalasi ya 2020, State Key Laboratory of Crystal Materials, Shandong University, ndi olemba oyamba, Cheng He, State Key Laboratory of Solid Microstructure Physics, Nanjing University, ndiye wolemba wachiwiri, ndipo Pulofesa Yu Haohai ndi Huaijin Zhang, Shandong University, ndi Yanfeng Chen, Nanjing University, ndi olemba ogwirizana.
Popeza Einstein adapereka lingaliro la kuwala kolimbikitsidwa m'zaka za zana lapitali, njira ya laser yapangidwa mokwanira, ndipo mu 1960, Maiman adapanga laser yoyamba yopopedwa ndi kuwala. Pakupanga laser, kupumula kwa kutentha ndi chinthu chofunikira kwambiri chomwe chimabwera ndi kupanga laser, chomwe chimakhudza kwambiri magwiridwe antchito a laser ndi mphamvu ya laser yomwe ilipo. Kupumula kwa kutentha ndi zotsatira za kutentha nthawi zonse zimaonedwa ngati magawo ofunikira owopsa pakukonza laser, omwe ayenera kuchepetsedwa ndi ukadaulo wosiyanasiyana wosinthira kutentha ndi kuzizira. Chifukwa chake, mbiri ya chitukuko cha laser imaonedwa ngati mbiri ya kulimbana ndi kutentha kotayika.

Chidule cha chiphunzitso cha laser yopopera ya photon-phonon

Gulu lofufuza lakhala likuchita kafukufuku wa zinthu zowunikira pogwiritsa ntchito laser ndi nonlinear, ndipo m'zaka zaposachedwa, njira yopumulira kutentha yakhala ikumveka bwino kuchokera ku lingaliro la solid state physics. Kutengera lingaliro loyambira lakuti kutentha (kutentha) kumakhala m'ma phononi a microcosmic, zimaganiziridwa kuti kupumula kutentha kokha ndi njira ya quantum yolumikizira ma electron-phonon, yomwe imatha kukwaniritsa kusintha kwa quantum kwa mphamvu ya ma electron kudzera mu kapangidwe koyenera ka laser, ndikupeza njira zatsopano zosinthira ma electron kuti apange mafunde atsopano.laser. Kutengera ndi lingaliro ili, mfundo yatsopano yopangira laser yopopera pogwiritsa ntchito electron-phonon ikuperekedwa, ndipo lamulo losinthira ma electron pansi pa electron-phonon coupling limachokera potenga Nd:YVO4, kristalo yoyambira ya laser, ngati chinthu choyimira. Nthawi yomweyo, laser yopopera pogwiritsa ntchito photon-phonon yosaziziritsidwa imapangidwa, yomwe imagwiritsa ntchito ukadaulo wachikhalidwe wopopera wa laser diode. Laser yokhala ndi kutalika kwa mafunde osowa 1168nm ndi 1176nm yapangidwa. Pachifukwa ichi, kutengera mfundo yoyambira yopangira laser ndi electron-phonon coupling, zapezeka kuti chopangidwa ndi laser threshold ndi kutentha ndi zosasintha, zomwe ndizofanana ndi mawu a Curie's law mu magnetism, komanso zikuwonetsa lamulo loyambira la physical mu ndondomeko yosinthira gawo losokonezeka.

Kuzindikira koyesera kwa photon-phonon cooperativekupompa laser

Ntchitoyi imapereka lingaliro latsopano la kafukufuku wamakono pa njira zopangira laser,fizikisi ya laser, ndi laser yamphamvu kwambiri, ikuwonetsa gawo latsopano la kapangidwe ka ukadaulo wokulitsa kutalika kwa mafunde a laser ndi kufufuza makristalo a laser, ndipo ikhoza kubweretsa malingaliro atsopano ofufuza kuti apangema quantum optics, mankhwala a laser, chiwonetsero cha laser ndi madera ena okhudzana ndi ntchito.