Propagation of short optical pulses in dispersive medium

1988 ◽  
Vol 24 (8) ◽  
pp. 1548-1553 ◽  
Author(s):  
I.P. Christov
Keyword(s):  
Dispersive Medium ◽  
Optical Pulses

scholarly journals Coherent soliton propagation through doped optical fibers: cloning, breakup, and soliton interactions

2001 ◽  
Vol 73 (2) ◽  
pp. 197-209
Author(s):  
SOLANGE B. CAVALCANTI ◽  
EDUARDO J. DA S. FONSECA ◽  
DILSON P. CAETANO ◽  
JANDIR M. HICKMANN
Keyword(s):  
Optical Fibers ◽  
Dispersive Medium ◽  
Coherent Population Trapping ◽  
Dispersive Media ◽  
Level System ◽  
Optical Pulses ◽  
Bloch Equations ◽  
Soliton Propagation ◽  
Soliton Interactions ◽  
Population Trapping

The simultaneous propagation of two optical pulses through a doped nonlinear dispersive medium modelled by a resonant three-level system was investigated numerically, within the framework of a pair of coupled extended nonlinear Schrödinger equations. These included the contribution of the dopant resonances whose dynamics is governed by Bloch equations. In this work, we review the interesting possibilities on the manipulation of fields such as cloning, breakup and soliton interactions, that the combination of coherent population trapping with nonlinear dispersive media offers.

scholarly journals Spectral Splitting of Optical Pulses Inside a Dispersive Medium at a Temporal Boundary

2016 ◽  
Vol 52 (12) ◽  
pp. 1-8 ◽  
Author(s):  
Brent W. Plansinis ◽  
William R. Donaldson ◽  
Govind P. Agrawal
Keyword(s):  
Dispersive Medium ◽  
Optical Pulses ◽  
Spectral Splitting ◽  
Temporal Boundary

On the propagation of short optical pulses in a linear dispersive medium with absorption

1992 ◽  
Vol 28 (6) ◽  
pp. 1619-1622 ◽  
Author(s):  
D.P. Foty ◽  
P. Wyns ◽  
K.E. Oughstun ◽  
I.P. Christov
Keyword(s):  
Dispersive Medium ◽  
Optical Pulses

scholarly journals Spectral Particularities of Femtosecond Optical Pulses Propagating in Dispersive Medium

2018 ◽  
Vol 63 (6) ◽  
pp. 479 ◽  
Author(s):  
V. S. Ovechko ◽  
V. P. Myhashko
Keyword(s):  
Time Domain ◽  
Optical Pulse ◽  
Dispersive Medium ◽  
Optical Signal ◽  
Optical Pulses ◽  
High Frequencies ◽  
Signal Velocity ◽  
Elementary Wave ◽  
The One ◽  
Propagation Of Waves

We have proposed a refined solution of the wave equation for a dispersive medium without restriction on the duration of an optical pulse. We apply a series of elementary wave packages (EWP) to the representation of superwideband signals (fs pulse). We investigate peculiarities of the propagation of waves with low and high frequencies through the one-resonance medium. We show the existence of a “precursor” for fs optical pulses. We propose a formula for the optical signal velocity (OSV). Its value does not exceed the light velocity in vacuum. We have designed a method of adaptation of EWP-pulses to time-domain spectroscopy.

Composite right/left-handed transmission line with array of thermocouples for generating terahertz radiation

2020 ◽  
Vol 92 (2) ◽  
pp. 20502
Author(s):  
Behrokh Beiranvand ◽  
Alexander S. Sobolev ◽  
Anton V. Kudryashov
Keyword(s):  
Transmission Line ◽  
Terahertz Radiation ◽  
Transmission Lines ◽  
Software Package ◽  
Optical Pulses ◽  
Capacitively Coupled ◽  
Voltage Difference ◽  
Left Handed ◽  
Microwave Transmission ◽  
Commercial Software Package

We present a new concept of the thermoelectric structure that generates microwave and terahertz signals when illuminated by femtosecond optical pulses. The structure consists of a series array of capacitively coupled thermocouples. The array acts as a hybrid type microwave transmission line with anomalous dispersion and phase velocity higher than the velocity of light. This allows for adding up the responces from all the thermocouples in phase. The array is easily integrable with microstrip transmission lines. Dispersion curves obtained from both the lumped network scheme and numerical simulations are presented. The connection of the thermocouples is a composite right/left-handed transmission line, which can receive terahertz radiation from the transmission line ports. The radiation of the photon to the surface of the thermocouple structure causes a voltage difference with the bandwidth of terahertz. We examined a lossy composite right/left-handed transmission line to extract the circuit elements. The calculated properties of the design are extracted by employing commercial software package CST STUDIO SUITE.

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