Electric field enhancement at multiple densities in laser-irradiated nanotube plasma

Pramana

P D Gupta¹  U Chakravarty1¹  P A Naik¹ 

[1] Laser Plasma Division, Raja Ramanna Centre for Advanced Technology, Indore 452 013, India$$

关键词: Nanotubes;    absorption;    field enhancement.;   

DOI  :  

学科分类：物理（综合）

来源: Indian Academy of Sciences

【 摘 要 】

The electric field enhancement inside a nanotube irradiated by intense ultrashort laser pulse ($ll 1$ ps) is calculated. The hollowness of the nanotubes determines the field enhancement and the electron density at which such structures exhibit resonance. The electric field in a nanotube plasma is shown to be resonantly enhanced at multiple densities during the two phases of interaction: the ionization phase and the hydrodynamic expansion phase. It is further shown that by a proper choice of hollowness of the nanotubes, a continued occurrence of the resonance over a longer time can be achieved. These properties make nanotubes efficient absorbers of intense ultrashort laser pulses.

【 授权许可】

Unknown