Propagation of ultrashort optical pulses in anisotropic optical media with carbon nanotubes

Abstract

In this paper, we investigate the evolution of electromagnetic waves in a nonlinear anisotropic optical medium with carbon nanotubes (CNTs). Based on Maxwell’s equation, an effective equation is obtained for the vector potential of the electromagnetic field, which takes into account different values of the velocity and polarization with two directions. The dependence of the pulse shape on the crystal type, as well as the angle between the electric field and the CNTs axis is revealed.

Extremely short pulses in an anisotropic optical medium containing carbon nanotubes with metal conduction

“…Next, let's make a comparison with the case considered earlier for semiconductor CNTs of the zigzag [22] type, as well as for zigzag tubes with metallic conductivity (n, 0), when n is a multiple of 3 (Fig. 2).…”

Предельно Короткие Импульсы В Оптически Анизотропной Среде, Содержащей Углеродные Нанотрубки С Металлической Проводимостью

“…Оптика и спектроскопия, 2022, том 130, вып. 12 Далее проведем сравнение с рассмотренным ранее случаем для полупроводниковых УНТ типа zigzag [22], а также для трубок zigzag с металлической проводимостью (n, 0), когда n кратно 3 (рис. 2).…”

Extremely short pulses in anisotropic optical media with carbon nanotubes taking into account multiphoton absorption

“…In previous studies devoted to birefringence a strong spreading of the pulse was reported due to the presence of the second component of field polarization [10,11]. To stabilize the pulse, it is proposed to use external field pumping as an option to alleviate the unavoidable dissipative effects that lead to the damping of the pulse.…”

“…In this study, in addition to the multiphoton absorption, we also take into account optically anisotropic properties of nonlinear medium [10,11], i.e. the effect of the general polarization itself on the propagation of extremely short pulses.…”