Kupita patsogolo kwaposachedwa pamakina opangira laser komanso kafukufuku watsopano wa laser

Kupita patsogolo kwaposachedwa kwa makina opangira laser komanso kwatsopanokafukufuku wa laser
Posachedwapa, gulu lofufuza la Professor Zhang Huaijin ndi Professor Yu Haohai wa State Key Laboratory of Crystal Materials of Shandong University and Professor Chen Yanfeng and Professor He Cheng of the State Key Laboratory of Solid Microstructure Physics of Nanjing University agwira ntchito limodzi kuti athetse vutoli. Vuto ndikukonza njira yopangira laser ya kupopera kogwirizana kwa phoon-phonon, ndikutenga chikhalidwe cha Nd: YVO4 laser crystal ngati chinthu choyimira kafukufuku. Kutulutsa kwamphamvu kwa laser kwa superfluorescence kumapezedwa ndikudutsa malire a mphamvu ya ma elekitironi, ndipo ubale wakuthupi pakati pa khomo la m'badwo wa laser ndi kutentha (nambala ya phonon ndi yogwirizana kwambiri) imawululidwa, ndipo mawonekedwe amawu ndi ofanana ndi lamulo la Curie. Phunzirolo linasindikizidwa mu Nature Communications (doi:10.1038/ S41467-023-433959-9) pansi pa dzina lakuti "Photon-phonon collaboratively pumped laser". Yu Fu ndi Fei Liang, wophunzira wa PhD wa Class 2020, State Key Laboratory of Crystal Materials, Shandong University, ndi olemba anzawo, Cheng He, State Key Laboratory of Solid Microstructure Physics, Nanjing University, ndi wolemba wachiwiri, ndi Pulofesa Yu. Haohai ndi Huaijin Zhang, Shandong University, ndi Yanfeng Chen, Nanjing University, ndi olemba anzawo.
Popeza Einstein adapereka chiphunzitso cholimbikitsa cha kuwala kwamphamvu m'zaka zapitazi, makina a laser adapangidwa bwino, ndipo mu 1960, Maiman adapanga laser yoyamba yopopa yolimba. Panthawi yopanga laser, kupumula kwamafuta ndichinthu chofunikira kwambiri chomwe chimatsagana ndi kutulutsa kwa laser, komwe kumakhudza kwambiri magwiridwe antchito a laser ndi mphamvu yomwe ilipo. Kupumula kwamafuta ndi kutentha kwanthawi zonse kumawonedwa ngati mafungulo owopsa amtundu wa laser, omwe amayenera kuchepetsedwa ndi matekinoloje osiyanasiyana otengera kutentha ndi firiji. Choncho, mbiri ya chitukuko cha laser imatengedwa kuti ndi mbiri ya kulimbana ndi kutentha kwa zinyalala.

Kuwunikira mwachidule kwa photon-phonon cooperative pumping laser

Gulu lofufuza lakhala likuchita kafukufuku wa laser ndi nonlinear optical materials, ndipo m'zaka zaposachedwa, njira yopumula yotentha imamveka bwino kuchokera kumaganizo a fizikiki yolimba. Kutengera lingaliro loyambirira loti kutentha (kutentha) kumapangidwa ndi ma phononi a microcosmic, kumawoneka kuti kupumula kwamafuta komweko ndi njira yolumikizira ma elekitironi-phonon, yomwe imatha kuzindikira kuchuluka kwa mphamvu zama elekitironi kudzera pamapangidwe oyenera a laser, ndikupeza. njira zatsopano zosinthira ma elekitironi kuti apange mafunde atsopanolaser. Kutengera lingaliro ili, mfundo yatsopano ya electron-phonon cooperative pumping laser generation ikuperekedwa, ndipo lamulo la kusintha kwa electron pansi pa electron-phonon coupling limachokera potenga Nd: YVO4, laser crystal crystal, monga chinthu choyimira. Panthawi imodzimodziyo, laser yopangidwa ndi photon-phonon cooperative pumping laser imapangidwa, yomwe imagwiritsa ntchito luso lamakono lopopera la laser diode. Laser yokhala ndi mawonekedwe osowa 1168nm ndi 1176nm idapangidwa. Pazifukwa izi, kutengera mfundo yaikulu ya laser m'badwo ndi electron-phonon lumikiza, amapezeka kuti mankhwala a laser m'badwo pakhomo ndi kutentha ndi mosalekeza, amene ali chimodzimodzi ndi mawu a lamulo Curie mu magnetism, komanso amasonyeza. lamulo lofunikira la thupi mumchitidwe wosasinthika wa gawo.

Kuzindikira koyeserera kwa mgwirizano wa photon-phononkupopera laser

Ntchitoyi imapereka malingaliro atsopano pakufufuza kopitilira muyeso pamakina opangira laser,laser physics, ndi laser yamphamvu yamphamvu, ikuwonetsa mawonekedwe atsopano aukadaulo wokulitsa luso la laser wavelength ndi kufufuza kwa kristalo wa laser, ndipo ikhoza kubweretsa malingaliro atsopano a kafukufuku pa chitukuko chaquantum Optics, mankhwala a laser, chiwonetsero cha laser ndi magawo ena okhudzana ndi ntchito.