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A delay-bandwidth product of 10.7 is achieved using ultra-fast intraband nonlinearities in semiconductor optical amplifiers to generate fast light. A novel chirped-pulse scheme enhances the fast light effect and generates delays in addition to advance.
The complete characterization of the 19th harmonic of Ti:sapphire laser was demonstrated using the photoelectron spectral shearing interferometry for the first time. The frequency chirp of a harmonic pulse was sensitively detected by this method.
We present an optimized and automated implementation of the compact Long-Crystal-SPIDER design. The integrated phase-corrections allow for precise pulse reconstruction up to bandwidths of 17 THz and linear chirp detection at bandwidths exceeding 40 THz.
An optical parametric chirped pulse amplification system producing high-energy, few-cycle pulses at 2.0-mum wavelength with low superfluorescence noise background for high harmonic generation in gas jets is demonstrated.
We report an optical parametric chirped-pulse amplification (OPCPA) system with the pulse duration of 5.5 fs at a 1-kHz repetition rate, pumped by a 450-nm pulse from a frequency doubled Ti:sapphire laser.
Femtosecond pulse generation by spectral filtering of a chirped pulse is demonstrated at 1550 nm. An erbium fiber laser with large normal dispersion and a spectral filter generates 200-fs and 1-nJ pulses.
We report on a passively mode-locked erbium fiber laser operating in a highly-positive dispersion regime. Highly-chirped pulses with 5.4 ps duration and 8 nm spectral bandwidth are generated. They are compressed down to 757 fs.
We report the first high-contrast, high-intense Ti:sapphire chirped-pulse amplification laser system incorporating a nonlinear pre-amplifier based on an optical parametric chirped-pulse amplification for use in experiments where relativistic effects dominate the physics.
We report on a fiber CPA system producing 31 muJ energy pulses at a repetition rate of 1 MHz, with pulse duration of 220 fs, leading to a peak power up to 120 MW.
The carrier-envelope phase of amplified laser pulses was stabilized to 230 mrad by controlling compressor grating separation. This technique can be used to synthesize two amplified laser pulses.
In this paper we have reported a jitter-free ultra-fast broadband OPA amplification in the sub-ps time domain at the repetition rate of 1 kHz. A novel broadband laser pulse source of ~180 nm (FWHM) at ~910 nm was demonstrated for Vulcan 10 PW OPCPA laser system development.
We demonstrated the Mazzler with XPW filter approach to obtain ultrashort pulses with Gaussian shape at the output of the laser system. This scheme can be scaled to higher output energy and sub 10 fs pulses.
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