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We present a contrast filter reaching 12 orders of magnitude from micro to milliJoule input pulse with 24% efficiency. It solves contrast issue for Petawatt class lasers in microjoule seeded CPA or double CPA scheme.
We demonstrate line-by-line pulse shaping control for optical arbitrary waveform generation (O-AWG). Independent manipulation of individual spectral lines from a mode-locked frequency comb leads to synthesis of user-specified ultrafast optical waveforms with unprecedented frequency resolution.
Hyperspectral Shack-Hartmann wavefront sensing based on a grating with integrated microaxicons is proposed. The capability to detect the spatio-spectral phase of ultrashort pulses is discussed. The generation of arrayed spectra is demonstrated for 10-fs pulses.
Addition of 1% second harmonic intensity to the driving field in high-harmonic generation can be used to double the attosecond-pulse period to one optical cycle, explained by a classical mechanism and observed in a quantum simulation.
We demonstrate a novel passive approach to terahertz pulse shaping based on altering the properties of surface waves propagating along a metal-dielectric interface. A simple time-domain numerical model explaining our observations is presented.
We use a single supercontinuum laser source to simultaneously excite multiple types of fluorescent dyes and collect the entire emission spectrum ranging from visible to near infrared, without using band pass filters and dichroic mirrors.
We introduce the notion of temporal superresolution for ultrashort pulses, by analogy with the well-known method of optical superresolution. Without spectral width modification we shape a pulse into a central peak of duration well below the Fourier limited.
A tunable optical filter with a response time of 120 fs is demonstrated in two-dimensional polystyrene photonic crystal. The tunable range of 3 nm of optical channel is obtained.
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