Abstract
The goal of any pulse characterization protocol is to describe how the spectral components of the electric field are changing in time. Apart from linear methods such as streak cameras, characterization techniques based on nonlinear processes have been developed. Those processes require broad spectral acceptance bandwidths, i.e. to be capable of resolving ultrashort features of the pulse. For many of those techniques, the pulses are reconstructed by iterative or deconvolution algorithms where the electric field is assumed to be fully coherent and do not account for the possibility of reduced coherence from pulse to pulse, or within a single pulse. In general, the chronocyclic Wigner function should be reconstructed in order to provide full information about an ensemble of partially coherent pulses. To make a parallel with quantum mechanics, most quantum systems cannot be considered as closed and interact with the environment, and subsequently, undergo decoherence. Therefore, a noisy quantum state cannot be described by a single pure state only but as a classical mixture of pure states.
© 2017 IEEE
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