High-power ultrafast lasers yog dav siv nyob rau hauv advanced manufacturing, ntaub ntawv, microelectronics, biomedicine, lub teb chaws tiv thaiv thiab tub rog teb, thiab lwm yam kev tshawb fawb kev tshawb fawb tseem ceeb heev rau kev txhawb lub teb chaws scientific thiab technology innovation thiab high-zoo kev loj hlob. Nyias-section laser tshuab tau dav siv hauv kev tsim khoom siab heev, cov ntaub ntawv, microelectronics, biomedical, tiv thaiv thiab tub rog teb ...
High-power ultrafast lasers yog dav siv nyob rau hauv advanced manufacturing, ntaub ntawv, microelectronics, biomedical, lub teb chaws tiv thaiv thiab tub rog teb, thiab lwm yam. Cov kev tshawb fawb txog kev tshawb fawb tseem ceeb heev los txhawb lub teb chaws scientific thiab technology innovation thiab high-zoo kev loj hlob. Los ntawm kev tsim txiaj ntawm nws lub zog nruab nrab siab, lub zog loj ntawm lub zog thiab cov nqaj zoo heev, nyias zaj duab xis laser system muaj qhov xav tau zoo hauv kev tshawb fawb thiab kev lag luam xws li attosecond physics thiab cov khoom siv, thiab tau txais kev saib xyuas los ntawm cov teb chaws thoob plaws ntiaj teb. Txawm li cas los xij, tam sim no, tseem muaj qhov tsis txaus ntseeg hauv cov thev naus laus zis tseem ceeb xws li cov khoom siv ua yeeb yaj kiab nyias nyias, kev tsim qauv thiab ntim khoom, thiab ntau lub tshuab nqus dej twj tso kua mis, uas txwv txoj kev loj hlob ntxiv ntawm high-power ultrafast thin-film lasers hauv. Tuam Tshoj.
Funded by the National Key Research and Development Program of China (No.2022YFB3605800), the team of Prof. Shuangchen Ruan and Associate Prof. Xing Liu from Shenzhen University of Technology (SZUT) has recently achieved a high-performance (high-stability, high-power, high-beam-quality, and high-efficiency) ultra-fast thin-film laser output by adopting self-developed thin-film module and regenerative amplification technology. By designing the regenerative amplification cavity and controlling the surface temperature and mechanical stability of the disk crystal inside the cavity, a laser output with a single pulse energy >300 μJ, mem tes dav<7 ps, and an average power >150 W tau paub, nrog qhov siab tshaj plaws kho qhov muag-rau-kho qhov muag hloov ua haujlwm ntawm 61%, uas tseem yog qhov zoo tshaj plaws kho qhov muag-rau-kho qhov muag hloov ua haujlwm tau tshaj tawm rau hnub tim los ntawm kev rov ua kom zoo dua ntawm ultra-ceev nyias-zaj duab xis, thiab lub teeb pom kev zoo. ntawm M2<1.06@150W, 8h stability RMS, and a beam quality factor of M2<1.06@150W. 150W, 8h stability RMS<0.33%, which marks an important progress in high-performance ultrafast thin-film lasers, which will provide more possibilities for high-power ultrafast laser applications.
Cov txiaj ntsig tau luam tawm hauv High Power Laser Science thiab Engineering, Vol. 2, No. 2, 2024 (Sizhi Xu, Yubo Gao, Xing Liu, Yewang Chen, Deqin Ouyang, Junqing Zhao, Minqiu Liu, Xu Wu, Chunyu Guo, Cangtang Wu, thiab Yewang Chen). Chunyu Guo, Cangtao Zhou, Qitao Lue, Shuangchen Ruan. High-repetition-rate thiab high-power npaum picosecond nyias-disk regenerative amplifier [J]. High Power Laser Science thiab Engineering, 2024, 12(2): 02000e14).
Siab hnyav zaus thiab siab zog nyias-disk regenerative amplifier system
Daim duab 1 Thin-flake regenerative amplification system
Cov qauv ntawm nyias-flake laser amplifier yog qhia nyob rau hauv daim duab 1. Nws muaj xws li ib tug fiber ntau qhov chaw, ib tug nyias-film laser taub hau thiab ib tug regenerative amplification kab noj hniav. Cov noob taum yog ib qho ytterbium-doped fiber oscillator nrog lub zog nruab nrab ntawm 15 mW, nruab nrab wavelength ntawm 1030 nm, mem tes dav ntawm 7.1 ps thiab rov ua dua zaus ntawm 30 MHz. Lub taub hau zaj duab xis nyias nyias siv lub tsev tsim Yb: YAG siv lead ua nrog txoj kab uas hla ntawm 8.8 hli thiab tuab ntawm 150 µm thiab 48- stroke twj tso kua mis. Lub twj tso kua mis siv 969 nm wavelength-xauv xoom-phonon kab LD, uas txo cov quantum defect rau 5.8%. Ib qho tshwj xeeb kub dissipation qauv ua kom txias cov lamellar siv lead ua thiab ua kom muaj kev ruaj ntseg ntawm cov kab noj hniav. Lub regenerative amplification kab noj hniav muaj Pockels Cell (PC), Thin Film Polarizers (TFP), Quarter-Wave Phaj (QWP), thiab cov kab noj hniav ruaj khov heev. Ib qho isolator (Isolator) yog siv los tiv thaiv lub teeb amplified los ntawm kev thim rov qab thiab ua rau cov noob qoob loo puas tsuaj.Cov qauv Isolator muaj xws li TFP1, Rotator thiab Ib Nrab-Wave Phaj (HWP) yog siv los cais cov noob tswv yim los ntawm cov mem tes amplified. Cov noob mem tes nkag mus rau hauv regenerative amplification chamber los ntawm TFP2. Lub barium bias borate (BBO) siv lead ua, PC, thiab QWP ua ke los tsim ib qho kev hloov kho qhov muag, thiab lub sijhawm muaj hluav taws xob siab yog siv rau lub PC kom xaiv cov noob mem tes kom nthuav tawm nws rov qab los ntawm kab noj hniav. Qhov xav tau mem tes yog oscillated hauv kab noj hniav los ntawm kev kho kom zoo ntawm Pukel lub thawv hluav taws xob lub sijhawm thov kom muaj txiaj ntsig zoo thaum lub sijhawm kev nthuav dav mus ncig.
Fig. 2 Tso zis kev ua tau zoo ntawm regenerative amplifier system rau nyias zaj duab xis
Ntawm 1 MHz, lub regenerative amplifier muaj qhov tso zis ntau tshaj plaws ntawm 154.1 W, qhov kev hloov kho qhov muag-rau-kho qhov muag txog li 61%, lub teeb pom kev zoo ntawm MX2=1.05 thiab MY 2=1.06 ntawm lub zog siab tshaj plaws, thiab ib qho 8- teev lub zog ruaj khov ntawm RMS < 0.33%.
