CC BY
11ALT'22
THz-O-7
NONLINEAR AND TERAHERTS PHOTONICS
Fundamental and practical properties of stretchable carbon nanotubes under ultrafast pump-probe spectroscopy
M. Paukov2, A. Goldt4, A. Nasibulin4, James Lloyd-Hughes3, A. Arsenin2, V. Volkov2, M. Burdanova12
1- Institute of Solid State Physics of the Russian Academy of Sciences, Chernogolovka, Russia
2 - Center for Photonics and 2D Materials, Moscow Institute of Physics and Technology, Dolgoprudny, Russia 3 - University of Warwick, Department of Physics, Gibbet Hill Road, Coventry, CV4 7AL, United Kingdom 4 -Skolkovo Institute of Science and Technology, Moscow
Devices which rapidly modulate THz beams are at high demand because of the advancement of communication systems such as 5G. In this work we report the fundamental and experimental results of optical-pump-terahertz-probe spectroscopy method applied to stretchable films of carbon nanotubes (CNT). It provides the information on the photo-induced conductivity of differently stretched CNT-films and the decay-time, which relies the behaviour of recombination of charge particles under the pump-light. Practical parameters of CNT such as modulation depth (MD), modulation speed (MS), energy modulation depth (EMD) for different relative stretching were also obtained. The experiment has shown that CNT possess highly effective characteristics, compared to previously studied materials. It makes them promising candidates for applications in the field of modulators of the terahertz signal, because at the same time it is possible to control their properties not only by the means of the intensity of light, but also by stretching.
Main author email address: paukov.mi@phystech.ru
