Generation and Application of Subterawatt 5-fs Optical Pulses

1998 ◽  
Author(s):  
Ch. Spielmann ◽  
S. Sartania ◽  
Z. Cheng ◽  
M. Lenzner ◽  
G. Tempea ◽  
...  
Keyword(s):  
Optical Pulses

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.

2D Few Cycle Optical Pulses in Silicene in the Presence of External Electric Field

2017 ◽  
Vol 9 (3) ◽  
pp. 03044-1-03044-3
Author(s):  
M. B. Belonenko ◽  
◽  
N. N. Konobeeva ◽  
Keyword(s):  
Electric Field ◽  
External Electric Field ◽  
Optical Pulses

Ultrashort pulses propagation through different approaches of the Split-Step Fourier method

2018 ◽  
Vol 1 (3) ◽  
pp. 2
Author(s):  
José Stênio De Negreiros Júnior ◽  
Daniel Do Nascimento e Sá Cavalcante ◽  
Jermana Lopes de Moraes ◽  
Lucas Rodrigues Marcelino ◽  
Francisco Tadeu De Carvalho Belchior Magalhães ◽  
...  
Keyword(s):  
Energy Conservation ◽  
Optical Pulse ◽  
Time Window ◽  
Fourier Method ◽  
Ultrashort Pulses ◽  
Nonlinear Effects ◽  
Single Mode ◽  
Time Algorithm ◽  
Optical Pulses ◽  
Running Time

Simulating the propagation of optical pulses in a single mode optical fiber is of fundamental importance for studying the several effects that may occur within such medium when it is under some linear and nonlinear effects. In this work, we simulate it by implementing the nonlinear Schrödinger equation using the Split-Step Fourier method in some of its approaches. Then, we compare their running time, algorithm complexity and accuracy regarding energy conservation of the optical pulse. We note that the method is simple to implement and presents good results of energy conservation, besides low temporal cost. We observe a greater precision for the symmetrized approach, although its running time can be up to 126% higher than the other approaches, depending on the parameters set. We conclude that the time window must be adjusted for each length of propagation in the fiber, so that the error regarding energy conservation during propagation can be reduced.

Synthesized optical pulses from a laser diode array.

2012 ◽  
Author(s):  
Juliet Gopinath ◽  
Jonathan Pfeiffer ◽  
David J. Bossert
Keyword(s):  
Laser Diode ◽  
Diode Array ◽  
Optical Pulses ◽  
Laser Diode Array

Pulse-width tunable, self-frequency conversion of short optical pulses over 200 nm based on supercontinuum generation

1994 ◽  
Vol 30 (23) ◽  
pp. 1960-1962 ◽  
Author(s):  
K. Morioka ◽  
K. Mori ◽  
S. Kawanishi ◽  
M. Saruwatari
Keyword(s):  
Pulse Width ◽  
Frequency Conversion ◽  
Supercontinuum Generation ◽  
Optical Pulses

Transmission of chirped optical pulses in fibre-grating dispersion compensated system

1997 ◽  
Vol 33 (2) ◽  
pp. 152 ◽  
Author(s):  
L.R. Kawase ◽  
M.C.R. Carvalho ◽  
W. Margulis ◽  
R. Kashyap
Keyword(s):  
Optical Pulses

Deterministic Modification of CVD Grown Monolayer MoS 2 with Optical Pulses

2021 ◽  
pp. 2002119
Author(s):  
Mikko T. Turunen ◽  
Eero Hulkko ◽  
Kamila K. Mentel ◽  
Xueyin Bai ◽  
Suvi‐Tuuli Akkanen ◽  
...  
Keyword(s):  
Optical Pulses
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