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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.
A novel method for shaping ultrashort pulses is demonstrated using a high resolution, high efficiency (85%), reflective, 4096 element liquid crystal SLM in a prism-based apparatus. We demonstrate dispersion correction and pulse-shaping with this device.
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 demonstrate pulse shaping and temporal superresolution for few-cycle pulses. A reduction of the FWHM pulse width down to 3.7 fs has been achieved well below the transform limit of 4.5 fs.
Spectral phase correction (TBP<1.005) of femtosecond regeneratively amplified pulses using a MIIPS-enabled pulse shaper positioned between the oscillator and amplifier is performed. Rigorous characterization of the shaped output pulses will be presented.
We demonstrate a simple and efficient grism based stretcher/compression system for the first time. 40 fs, 300 muJ pulses are generated at 5 kHz using this unique amplifier design.
Efficient reflection prisms for pulse compression and material-dispersion compensation have been designed and demonstrated in a CPA system. Designs for 800-nm and 1030-nm ultrafast applications are realized using off-the-shelf diffraction gratings.
We present results in a comprehensive analysis of gain shaping from Nd:glass amplifiers in an effort to generate near 100 fs pulses in chirped pulse amplification. We discuss relative gain balance between the two media.
Two-photon-induced photocurrents in two different semiconductors were coherently controlled simultaneously via femtosecond pulse shaping. Due to their distinct two-photon-absorption spectral responses, their photocurrent yield ratio was maximized (1.20:1) or minimized (0.75:1) using an evolutionary algorithm.
Polarization and phase shaped pulses can now be used for the absolute identification and quantification of mixtures containing isomers and enantiomers. The performance of this methodology will be discussed.
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