Tsis ntev los no, Lub Tsev Haujlwm Saib Xyuas Kev Ruaj Ntseg Ntawm Lub Hwj Chim Loj Loj Laser Physics, Shanghai Lub Tsev Haujlwm Saib Xyuas Kev Kho Mob, Suav Academy ntawm Kev Tshawb Fawb (SIOM), tau ua tiav kev tshawb fawb hauv kev txhaj tshuaj ultrafast kinetic kuaj, thiab cov txiaj ntsig kev tshawb fawb muaj feem cuam tshuam yog "Single-shot spatiotemporal. plasma density diagnosis siv lub sij hawm-wavelength-encoder arbitrary. Cov txiaj ntsig kev tshawb fawb tau luam tawm hauv Optics thiab Lasers hauv Engineering nyob rau hauv lub npe ntawm "Single-shot spatiotemporal plasma density diagnosis using an arbitrary time-wavelength-encoded biprism interferometer".
Ultrafast dynamics phenomena muaj nyob rau hauv lub teb ntawm photochemistry, spintronics, plasma physics, laser ua, thiab lwm yam. Ultrafast dynamics diagnostics yog ib qho tseem ceeb cov cuab yeej rau pom cov evolution txheej txheem ntawm ultrafast dynamics phenomena, uas yuav siv tau rau quantitatively kawm lub mechanism ntawm lub ultrafast. evolution txheej txheem, nthuav qhia lub hauv paus ntsiab lus ntawm ultrafast evolution txheej txheem, thiab paub lub luag hauj lwm ntawm quantitative tswv yim nyob rau hauv cov kev cai ntawm lub ultrafast evolution txheej txheem. Txawm li cas los xij, nws yog ib qho nyuaj rau tam sim no ib qho ultrafast dynamics diagnostic cov tswv yim rau ib txhij muab qhov zoo ntawm siab spatiotemporal daws teeb meem, siab sib lawv liag qhov tob, nws tus kheej adjustable lub sij hawm qhov rais, thiab tsis xav tau ib tug siv caj npab.
Hauv kev ua haujlwm no, cov kws tshawb fawb tau tshaj tawm lub sijhawm lub sijhawm wavelength-encoded biprism interferometer (TWEBI), uas yog ua raws li lub hauv paus ntsiab lus ntawm kev tsim cov wavelength-encoded sojntsuam lub teeb los ntawm cascading nonlinear crystals nrog cov theem sib txawv ntawm cov ces kaum, paub txog wavelength spatial multiplexing los ntawm kev siv ob- dimensional diffractive optics ntsiab (DOEs) thiab nqaim-bandpass interferometric lim (IBPFs), thiab siv plug-and-play biprism interferometers kom paub txog cov duab ntxoov ntxoo kaw hom thiab cov theem ntawm kev thov hloov ntawm cov duab ntxoov ntxoo kaw hom thiab theem ntsuas hom yog paub siv. ib tug plug-and-play biprism interferometer. Cov kev sim tau ua nyob rau pem hauv ntej-kawg ntawm qhov kho qhov muag parametric chirped mem tes amplification ntawm Shenlight II femtosecond digital vuas, uas TWEBI cov cuab yeej ua tiav qhov kev daws teeb meem ntawm 4 um, qhov kev daws teeb meem ntawm lub cev ntawm 200 fs, ib ntus qhov tob ntawm 12. , tus ncej zoo npaum li cas txog li 5 Tfps, thiab lub sijhawm hloov kho lub sijhawm tsis txaus ntseeg los ntawm sub-picoseconds mus rau 1.86 ns. Duab ntxoov ntxoo kaw thiab densitometric ntsuas ntawm qhov dynamics ntawm laser-induced cua filamentation tau ua nrog TWEBI ntaus ntawv, thiab cov txiaj ntsig kev sim cuam tshuam tau pom qhov ua tau ntawm txoj kev. Txoj haujlwm no muab cov kev daws teeb meem rau kev kuaj xyuas cov kev hloov pauv hloov pauv yooj yim, uas yuav pab peb nkag siab ntxiv, tswj hwm, thiab siv cov xwm txheej ultrafast.
Cov hauj lwm cuam tshuam tau txais kev txhawb nqa los ntawm National Natural Science Foundation ntawm Tuam Tshoj (NSFC), Foundation ntawm Suav Academy ntawm Sciences (CAS), Foundation ntawm Shanghai Science thiab Technology Commission (SSTC), thiab Foundation ntawm Ministry of Science thiab Technology .
Daim duab 1 (a) TWEBI kev sim teeb tsa; (b) soj ntsuam lub teeb pom kev zoo; (c) soj ntsuam lub teeb lub sij hawm-domain amplitude thiab theem maps; (d) spatial daws teeb meem ntawm lub imaging system
Daim duab 2 (a) Duab ntxoov ntxoo daim ntawv qhia ntawm laser-induced cua filamentation; (b) daim ntawv qhia wavelength ntawm qhov chaw ntawm qhov chaw subluminous; (c) theem thiab amplitude daim ntawv qhia ntawm laser-induced filamentation; (d) reconstructed plasma density distribution
