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Frequency measurement based on dual THz frequency combs of photocarrier (dual PC-THz combs) is a promising method for the real-time measurement of the absolute frequency in CW-THz radiation without the need for cryogenic cooling. However, use of dual femtosecond lasers hinders the practicability of this method. In this paper, we generated dual PC-THz combs using a free-running, dual-wavelength mode-locked...
An intense optical pulse while propagating in a fiber undergoes dispersive and nonlinear change of phase rotation. It is the SPM (single pulse propagation) and XPM effects due to some uncontrolled birefringence of the fiber. While this effect can be disturbing, it is also utilized for passive mode-locking of fiber lasers. Simulation of pulse propagation in fiber optics is carried out by solving nonlinear...
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