Cov kev nce qib tsis ntev los no hauv kev tsim cov tshuab laser thiab kev tshawb fawb laser tshiab

Cov kev nce qib tsis ntev los no hauv kev tsim laser mechanism thiab cov tshiabkev tshawb fawb txog laser
Tsis ntev los no, pawg tshawb fawb ntawm Xibfwb Zhang Huaijin thiab Xibfwb Yu Haohai ntawm Lub Xeev Chaw Kuaj Xyuas Cov Khoom Siv Crystal ntawm Shandong University thiab Xibfwb Chen Yanfeng thiab Xibfwb He Cheng ntawm Lub Xeev Chaw Kuaj Xyuas Cov Khoom Siv Crystal ntawm Nanjing University tau ua haujlwm ua ke los daws qhov teeb meem thiab tau tawm tswv yim txog lub tshuab tsim laser ntawm kev sib koom tes ntawm phon-phonon, thiab coj cov khoom siv laser Nd: YVO4 ib txwm ua lub hom phiaj tshawb fawb sawv cev. Cov zis laser ua haujlwm siab ntawm superfluorescence tau txais los ntawm kev tawg los ntawm qhov txwv ntawm qib zog electron, thiab kev sib raug zoo ntawm lub cev ntawm lub zog tsim laser thiab kub (tus lej phonon muaj feem cuam tshuam ze) tau qhia, thiab daim ntawv qhia tawm zoo ib yam li Curie txoj cai. Txoj kev tshawb fawb tau luam tawm hauv Nature Communications (doi: 10.1038 / S41467-023-433959-9) nyob rau hauv lub npe "Photon-phonon sib koom tes pumped laser". Yu Fu thiab Fei Liang, tus tub ntxhais kawm PhD ntawm Chav Kawm 2020, State Key Laboratory of Crystal Materials, Shandong University, yog cov kws sau ntawv ua ke thawj zaug, Cheng He, State Key Laboratory of Solid Microstructure Physics, Nanjing University, yog tus kws sau ntawv thib ob, thiab Xibfwb Yu Haohai thiab Huaijin Zhang, Shandong University, thiab Yanfeng Chen, Nanjing University, yog cov kws sau ntawv sib raug zoo.
Txij li thaum Einstein tau tawm tswv yim txog kev tsim hluav taws xob ntawm lub teeb nyob rau hauv lub xyoo pua dhau los, lub tshuab laser tau tsim kho tag nrho, thiab xyoo 1960, Maiman tau tsim thawj lub laser solid-state uas siv lub teeb pom kev zoo. Thaum lub sijhawm tsim laser, kev so ntawm thermal yog ib qho tseem ceeb ntawm lub cev uas nrog rau kev tsim laser, uas cuam tshuam loj heev rau kev ua haujlwm ntawm laser thiab lub zog laser muaj. Kev so ntawm thermal thiab thermal effect yeej ib txwm raug suav hais tias yog cov yam ntxwv tseem ceeb ntawm lub cev hauv cov txheej txheem laser, uas yuav tsum tau txo los ntawm ntau yam kev hloov pauv cua sov thiab cov thev naus laus zis txias. Yog li ntawd, keeb kwm ntawm kev tsim laser raug suav hais tias yog keeb kwm ntawm kev tawm tsam nrog cov cua sov pov tseg.

Kev piav qhia txog kev xav ntawm photon-phonon cooperative pumping laser

Cov pab pawg tshawb fawb tau koom nrog kev tshawb fawb txog laser thiab nonlinear optical materials ntev lawm, thiab nyob rau xyoo tas los no, cov txheej txheem thermal relaxation tau nkag siab tob los ntawm qhov pom ntawm cov khoom khov kho. Raws li lub tswv yim yooj yim uas cua sov (kub) yog embodied hauv microcosmic phonons, nws tau txiav txim siab tias thermal relaxation nws tus kheej yog ib qho txheej txheem quantum ntawm electron-phonon coupling, uas tuaj yeem paub txog quantum tailoring ntawm electron zog theem los ntawm kev tsim laser tsim nyog, thiab tau txais cov channel hloov pauv electron tshiab los tsim cov wavelength tshiab.laserRaws li qhov kev xav no, ib txoj cai tshiab ntawm electron-phonon cooperative pumping laser generation tau raug pom zoo, thiab txoj cai hloov pauv electron hauv qab electron-phonon coupling yog los ntawm kev noj Nd: YVO4, ib qho yooj yim laser crystal, ua ib yam khoom sawv cev. Tib lub sijhawm, ib qho uncooled photon-phonon cooperative pumping laser yog tsim, uas siv cov txheej txheem laser diode pumping ib txwm muaj. Laser nrog tsawg wavelength 1168nm thiab 1176nm yog tsim. Ntawm lub hauv paus no, raws li lub hauv paus ntsiab lus ntawm laser tiam thiab electron-phonon coupling, nws pom tias cov khoom ntawm laser tiam threshold thiab kub yog ib qho tas mus li, uas yog tib yam li qhov kev qhia ntawm Curie txoj cai hauv magnetism, thiab kuj qhia txog txoj cai lub cev yooj yim hauv cov txheej txheem hloov pauv theem tsis sib haum xeeb.

Kev paub txog kev koom tes ntawm photon-phonontwj tso kua mis laser

Cov haujlwm no muab lub zeem muag tshiab rau kev tshawb fawb tshiab ntawm cov txheej txheem tsim laser,kev siv laser physics, thiab laser zog siab, taw qhia txog qhov tsim tshiab rau laser wavelength expansion technology thiab laser crystal exploration, thiab tej zaum yuav coj cov tswv yim tshawb fawb tshiab rau kev txhim kho ntawmkev siv quantum optics, tshuaj laser, laser zaub thiab lwm yam kev siv cuam tshuam.