Results 21 to 30 of about 1,033,909 (189)

Comparative analysis on pulse compression with classical orthogonal polynomials for optimized time-bandwidth product

open access: yesAin Shams Engineering Journal, 2018
The theme of this paper is to analyze and compare the pulse compression with classical orthogonal polynomials (Chebyshev, Laguerre, Legendre and Hermite polynomials) of different orders.
Ankur Thakur, Salman Raju Talluri
doaj   +1 more source

Experimental optimization of compact double-cell stimulated Brillouin scattering pulse compressor

open access: yesFrontiers in Physics, 2023
To optimize the output of SBS sub-nanosecond pulse compression, two kinds of compact double-cell structures are carried out and compared experimentally. The beam parameters of the compact double-cell structure are calculated theoretically, which provides
Hongli Wang   +3 more
doaj   +1 more source

Chirped pulse Raman amplification in plasma: high gain measurements [PDF]

open access: yes, 2009
High power short pulse lasers are usually based on chirped pulse amplification (CPA), where a frequency chirped and temporarily stretched ``seed'' pulse is amplified by a broad-bandwidth solid state medium, which is usually pumped by a monochromatic ...
Yang, X.   +9 more
core   +4 more sources

Dispersion Caused by the Penetration Effect in X-ray Compressors

open access: yesPhotonics, 2023
Chirped X-ray pulse compression is a promising approach for generating ultra-short X-ray free electron laser (XFEL) pulses. The design of X-ray pulse compressors requires the careful control of group delay dispersion (GDD), which plays a critical role in
Chuan Yang   +7 more
doaj   +1 more source

Design of Excitatory Signal and Matched Filter for Compressed Pulsed Radar

open access: yesRevista Cubana de Ingeniería, 2013
In this paper is presented pulse compression technique in radar, focusing on Linear Frequency Modulation (LFM). Matched Filter characteristics are the elements considered for pulse compression, algebraic operations are derived to avoid the signal phase ...
Argel Gonzalez Padilla   +3 more
doaj   +1 more source

Wavelength tunable 10-GHz 3-ps pulse source using a dispersion decreasing fiber-based nonlinear optical loop mirror [PDF]

open access: yes, 2004
We experimentally demonstrate the use of a dispersion decreasing fiber (DDF)-based nonlinear optical loop mirror (NOLM) for the generation of wavelength tunable soliton-like pulses at a repetition rate of 10 GHz.
Richardson, D.J., Lee, J.H., Kogure, T.
core   +1 more source

Generation of a Train of Ultrashort Pulses Near-Infrared Regime in a Tapered Photonic Crystal Fiber Using Raised-Cosine Pulses

open access: yesIEEE Photonics Journal, 2012
We consider an optical pulse propagating in a tapered photonic crystal fiber (PCF) wherein dispersion as well as nonlinearity varies along the propagation direction.
Samuel Olupitan   +4 more
doaj   +1 more source

Electromagnetic modelling of a monolithic pulse reshaper based on a photonic crystal waveguide integrated with a SOA [PDF]

open access: yes, 2006
Finite difference time domain (FDTD) and finite element (FE) frequency domain methods are used to study the propagation of arbitrary chirped pulses in photonic crystal (PhC) waveguide.
M. Cryan   +29 more
core   +1 more source

P127 Graded Cuff Compression Protocol to Induce Retrograde Shear Produces Proportionate Increment in Regional Arterial Compliance in Human Peripheral Artery

open access: yesArtery Research, 2020
Background External compression using pneumatic cuff inflation is a well-established model used to induce incremental changes in proximal retrograde flow and shear [1].
Naaz Afreen   +4 more
doaj   +2 more sources

1.9 μm Few-Cycle Pulses Based on Multi-Thin-Plate Spectral Broadening and Nonlinear Self-Compression

open access: yesIEEE Photonics Journal, 2021
In attosecond and strong-field physics, the acquisition of few-cycle laser sources open up a new area. We report a nonlinear pulse compression technology combining multi-thin-plate spectral broadening and nonlinear self-compression that generates a 0.52 ...
Beijie Shao   +6 more
doaj   +1 more source

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