4 papers · 1 filter
Nanotips for 0.5THz scattering scanning near field microscopy
Zeliang Zhang, Pengfei Qi, Olga Kosavera +3
This manuscript demonstrates the theory, design, and simulation of scattering scanning near field microscopy (s-SNOM) in 0.5THz. A comprehensive simulation model of nanotips' geome…
Analysis of laser polarization state on remote induced plasma luminescence characteristics of filament in air
Yuezheng Wang, Zhi Zhang, Zeliang Zhang +3
The femtosecond laser filamentation is the result of the dynamic interplay between plasma self-focusing and defocusing generated by the multiphoton/tunnel ionization of air molecul…
Coupled air lasing gain and Mie scattering loss: aerosol effect in filament-induced plasma spectroscopy
Jiayun Xue, Zhi Zhang, Yuezheng Wang +8
Femtosecond laser filament-induced plasma spectroscopy (FIPS) demonstrates great potentials in the remote sensing for identifying atmospheric pollutant molecules. Due to the widesp…
Sub-ppb aerosol detection at a distance of 30 meters by millijoule femtosecond laser pulse filamentation in air
Jiewei Guo, Zhi Zhang, Nan Zhang +8
In this work, sub-ppb aerosol detection is achieved by femtosecond laser filament with a single pulse energy of 4 mJ at a distance of 30 m. A concave mirror with an open aperture o…