Optical Pulse Compression [PDF]
The utilization of single-mode optical fibers as the nonlinear element in a pulse compression system has overcome several technical difficulties which have prevented the general use of pulse compression as a laboratory technique. The optical fiber based pulse compressor is particularly well matched to c.w. mode-locked lasers.
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Optimised design of fibre-based pulse compressor for gain-switched DFB laser pulses at 1.5 µm [PDF]
An optical-fibre based pulse compressor for gain-switched DFB laser pulses has been optimised using a systematic procedure based on the initial complete characterisation of the laser pulses, followed by numerical simulations of the pulse propagation in ...
B.C. Thomsen +10 more
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80 W, up to 2 mJ Yb-based laser multi-pass-cell post-compression down to sub-20 fs: Experimental and numerical results [PDF]
In the last years, different methods of laser pulse post-compression have proven their efficiency. Nonlinear spectral broadening achieved when coupling an ultrafast pulse in a gas-filled multi-pass-cell (MPC) provides common pulse compression factors of ...
Hergott Jean-François +12 more
doaj +1 more source
Simple, stable and efficient nonlinear pulse compression through cascaded filamentation in air
Nonlinear compression has become an obligatory technique along with the development of ultrafast lasers in generating ultrashort pulses with narrow pulse widths and high peak power.
Tao Pu +9 more
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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
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Compression of Few-Microjoule Femtosecond Pulses in a Hollow-Core Revolver Fiber
Gas-filled hollow-core fibers are a convenient tool for laser pulse compression down to a few-cycle duration. The development of compact, efficient and high quality compression schemes for laser pulses of relatively low μJ-level energies is of particular
Leonid Losev +5 more
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Sub two-cycle soliton-effect pulse compression at 800 nm in Photonic Crystal Fibers [PDF]
The possibility of soliton self-compression of ultrashort laser pulses down to the few-cycle regime in photonic crystal fibers is numerically investigated.
Ahmed +27 more
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Dispersion Caused by the Penetration Effect in X-ray Compressors
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
Experimental optimization of compact double-cell stimulated Brillouin scattering pulse compressor
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
Harmonic chirp imaging method for ultrasound contrast agent [PDF]
Coded excitation is currently used in medical ultrasound to increase signal-to-noise ratio (SNR) and penetration depth. We propose a chirp excitation method\ud for contrast agents using the second harmonic component of the response.
Associate Member +5 more
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