67 citations · 225 across the 10 of their papers we have counts for
10 papers
Time-resolved shadowgraphs of transient plasma induced by spatiotemporally focused femtosecond laser pulses in fused silica glass
Zhaohui Wang, Bin Zeng, Guihua Li +7
We report on experimental observations of formation and evolution of transient plasma produced in fused silica glass with spatiotemporally focused (STF) femtosecond laser pulses us…
Spatiotemporal focusing does not always improve axial intensity localization
Ya Cheng, Hongqiang Xie, Zhaohui Wang +6
We report on an experimental comparison on critical intensities of nonlinear self-focusing in air with conventional focusing and spatiotemporal focusing schemes. Our results show t…
Quasi-monoenergetic Electron Beams from Laser-plasma Acceleration by Ionization-induced Injection in Low- density Pure Nitrogen
Mengze Tao, Nasr A. M. Hafz, Song Li +5
We report a laser wakefield acceleration of electron beams up to 130 MeV from laser-driven 4-mm long nitrogen gas jet. By using a moderate laser intensity (3.5*10^18 W.cm^(-2)) and…
Enhanced electron yield from a laser-plasma accelerator using high-Z gas jet targets
Mohammad Mirzaie, Nasr A. M. Hafz, Song Li +5
An investigation of the multi-hundred MeV electron beam yield (charge) form helium, nitrogen, neon and argon gas jet plasmas in a laser-plasma wakefield acceleration experiment was…
Interferometric characterization of pulse front tilt of spatiotemporally focused femtosecond laser pulses for three-dimensional micromachining application
Zhaohui Wang, Fei He, Jielei Ni +6
We report on an experimental measurement of the pulse front tilt (PFT) of spatiotemporally focused femtosecond laser pulses in the focal plane in both air and bulk transparent mate…
Fabrication of an integrated high-quality-factor (high-Q) optofluidic sensor by femtosecond laser micromachining
Jiangxin Song, Jintian Lin, Jialei Tang +6
We report on fabrication of a microtoroid resonator of a high-quality factor (i. e., Q-factor of ~3.24x10^6 measured under the critical coupling condition) integrated in a microflu…
Fabrication of three-dimensional microdisk resonators in calcium fluoride by femtosecond laser micromachining
Jintian Lin, Yingxin Xu, Jialei Tang +5
We report on fabrication of on-chip calcium fluoride (CaF2) microdisk resonators using water-assisted femtosecond laser micromachining. Focused ion beam (FIB) milling is used to cr…
Second harmonic generation in a centrosymmetric gas medium with spatiotemporally focused intense femtosecond laser pulses
Guihua Li, Jielei Ni, Hongqiang Xie +9
We demonstrate unexpectedly strong second harmonic generation (SHG) in Argon gas by use of spatiotemporally focused (SF) femtosecond laser pulses. The resulting SHG by the SF schem…
Low-threshold whispering-gallery-mode microlasers fabricated in a Nd: glass substrate by three-dimensional femtosecond laser micromachining
Jintian Lin, Yingxin Xu, Jiangxin Song +6
We report on fabrication of whispering-gallery-mode microlasers in a Nd:glass chip by femtosecond laser three-dimensional (3D) micromachining. Main fabrication procedures include t…
On-chip three-dimensional high-Q microcavities fabricated by femtosecond laser direct writing
Jintian Lin, Shangjie Yu, Yaoguang Ma +6
We report on the fabrication of three-dimensional (3D) high-Q whispering gallery microcavities on a fused silica chip by femtosecond laser microfabriction, enabled by the 3D nature…