6533b871fe1ef96bd12d0f49

RESEARCH PRODUCT

Ambiguity function analysis of pulse train propagation: applications to temporal Lau filtering

Víctor Torres-companyPedro AndrésCristina M. Gómez-sarabiaJorge Ojeda-castanedaJesús Lancis

subject

PhysicsAmplified spontaneous emissionAmbiguity functionbusiness.industryFilter (signal processing)SignalAtomic and Molecular Physics and OpticsElectronic Optical and Magnetic MaterialsOpticsHarmonicsTalbot effectPulse waveCoherence (signal processing)Computer Vision and Pattern Recognitionbusiness

description

We use the periodic-signal ambiguity function for visualizing the intensity-spectrum evolution through propagation in a first-order dispersive medium. We show that the degree of temporal coherence of the optical source plays the role of a low-pass filter on the signal's ambiguity function. Based on this, we present a condition on the temporal Lau effect for filtering harmonics at fractions of the Talbot length. This result allows one to increase the repetition rate of a pulse train obtained from a sinusoidally phase-modulated CW signal.

https://doi.org/10.1364/josaa.24.002268