Temporal superresolution of ultrashort laser pulses

Effective super-bandwidth in laser pulses

“…11 This supports the concept of temporal super-resolution introduced in Ref. 12 by analogy to the optical super-resolution imaging technique. Hence, a proper shape and spectral control of an ultra-short laser pulse can result in pulses shorter than a transformed-limited Gaussian pulse with the same spectral width.…”

“…3 (b)). It can be observed a monotonous decrease of FWHM t with respect to its value at α = 0 (temporal super-resolution 12,13 ), while Γ steadily increases (super-bandwidth).…”

A newcomer's guide to ultrashort pulse shaping and characterization

“…+ It is possible to obtain shorter pulse than Fourier limited one by shaping the spectral amplitude. The cost is the appearance of a pedestal in the time domain as well as a decrease of energy [59] is the spatial extension of a given frequency component. As position and frequency are coupled in the Fourier plane, both the spectral and spatial components of the pulse are affected by the mask.…”

Energy Scaling of an Ultrafast All-PM-Fiber Laser Oscillator

“…We were able to recompress the pulse to the temporal duration of (248 ± 7) fs (measured as FWHM), which was very close to the FTL pulse duration of 246 fs. Temporal Strehl ratio, calculated as the ratio between the obtained peak power and the peak power of the FTL pulse [31], [32], was equal to 0.97. The temporal Strehl ratio gave us quantitative information about excellent quality of pulses.…”