Charging titanium microparticles with femtosecond laser pulses

A. A. Sergeev; V. V. Sementin; A. V. Savin; P. Yu. Serdobintsev; A. P. Pogoda; A. S. Boreysho

doi:10.1117/12.2559717

9 April 2020 Charging titanium microparticles with femtosecond laser pulses

A. A. Sergeev, V. V. Sementin, A. V. Savin, P. Yu. Serdobintsev, A. P. Pogoda, A. S. Boreysho

Proceedings Volume 11458, Saratov Fall Meeting 2019: Laser Physics, Photonic Technologies, and Molecular Modeling; 114580C (2020) https://doi.org/10.1117/12.2559717
Event: Saratov Fall Meeting 2019: VII International Symposium on Optics and Biophotonics, 2019, Saratov, Russian Federation

Abstract

The article presents experimental results on charging free-falling particles of titanium dust about 40 microns in size using femtosecond laser pulses, as well as comparing the results with earlier studies on particle charging by nanosecond laser pulses. The results include the ratio of the achieved charge of dust particles under various conditions: beam size, energy, and laser pulse duration. The problems of multiphoton ionization, the degree of nonlinear process, and the quantum efficiency of femtosecond charging are discussed.

Citation Download Citation

A. A. Sergeev, V. V. Sementin, A. V. Savin, P. Yu. Serdobintsev, A. P. Pogoda, and A. S. Boreysho "Charging titanium microparticles with femtosecond laser pulses", Proc. SPIE 11458, Saratov Fall Meeting 2019: Laser Physics, Photonic Technologies, and Molecular Modeling, 114580C (9 April 2020); https://doi.org/10.1117/12.2559717

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