نتایج جستجو برای: pulse compression
تعداد نتایج: 178728 فیلتر نتایج به سال:
We show theoretically and numerically how to optimize sign-alternating dispersion waveguides for maximum nonlinear pulse compression, while leveraging the substantial increase in bandwidth-to-input peak power advantage of these structures. find that spectral phase can converge a parabolic profile independent uncompensated higher-order dispersion. The combination an easy compress spectrum, with ...
The predicted spectral phase of a fiber continuum pulsed source rigorously quantified by the scalar generalized nonlinear Schrödinger equation is found to be in excellent agreement with that measured by multiphoton intra-pulse interference phase scan (MIIPS) with background subtraction. This cross-validation confirms the absolute pulse measurement by MIIPS and the transform-limited compression ...
Solitons are nonlinear waves that exhibit invariant or recurrent behaviour as they propagate. Precise control of dispersion and nonlinear effects governs soliton propagation and, through the formation of higher-order solitons, permits pulse compression. In recent years the development of photonic crystals—highly dispersive periodic dielectric media—has attracted a great deal of attention due to...
The use of ultrasonic signals at sub-MHz frequencies for Non Destructive Evaluation of thick polymer samples is described. It will be shown that the combination of low-frequency coded signals such as chirps, together with appropriate signal processing methods such as pulse compression, can provide a powerful tool for ultrasonic NDE. To achieve this goal, it is essential that the measurement sys...
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