Title :
Laser pulse assisted field emission of aligned carbon nanotubes
Author :
Xianqi Wei ; Xianjun Xia ; Weihuan Liu ; Xin Li ; Xiaoli Wang
Author_Institution :
Sch. of Sci., Xi´an Jiaotong Univ., Xi´an, China
Abstract :
We explored the impact of infrared light pulses on the field emission performances of carbon nanotubes (CNTs). Carbon nanotubes, which were multiwalled CNTs with the length of 6-10μm and diameter of 20-40nm, synthesized by chemical vapor deposition (CVD) to serve as field emission cathodes. The power of infrared light pulse was 1W laser pulse with the wavelength of 1.06μm. The field emission performances of CNTs had remarkable change when optical field assisted the electric field. Irradiating the tip of CNTs with infrared laser pulses leads to pulsed field emission. The result showed the electron emission pulse was under the laser field control, which was a first step in our lab to explore for ultrashort laser pulse to meet the requirement of high-power and high-frequency electron sources.
Keywords :
cathodes; chemical vapour deposition; electron field emission; multi-wall carbon nanotubes; nanofabrication; vacuum microelectronics; C; aligned carbon nanotubes; carbon nanotube tip; chemical vapor deposition; electric field; electron emission pulse; field emission cathodes; high-frequency electron source; high-power electron source; infrared laser pulses; infrared light pulse power; infrared light pulses; laser field control; laser pulse assisted field emission; multiwalled carbon nanotubes; optical field; power 1 W; size 20 nm to 40 nm; size 6 mum to 10 mum; ultrashort laser pulse; wavelength 1.06 mum; Carbon nanotubes; Cathodes; Electron emission; Electron sources; Scanning electron microscopy; Switches; Ultrafast optics; Carbon nanotubes (CNTs); Field emission; Infrared laser; Pulse;
Conference_Titel :
Vacuum Electronics Conference (IVEC), 2015 IEEE International
Conference_Location :
Beijing
Print_ISBN :
978-1-4799-7109-1
DOI :
10.1109/IVEC.2015.7223876
