Abstract
Post-pulse-compression is demanded to produce energetic few-cycle pulses. We propose pre-chirp-managed adiabatic soliton compression (ASC) in gas-filled pressure-gradient hollow-core fibers to suppress the detrimental pedestals and therefore significantly improve the compressed pulse quality. We show that two-stage ASC can compress 125 μJ, 130 fs pulses at 2 μm to a nearly two-cycle pulse 15 fs in duration. Our analytical analysis suggests that ASC is in favor of compressing pulses centered at a longer wavelength. As an example, a 280 μJ, 220 fs Gaussian pulse at 4 μm is compressed to 60 fs with minimal pedestals. We expect that the resulting high-quality, energetic few-cycle pulses will find important applications in high-field science.
Highlights
High-energy (>100 μJ) few-cycle optical pulses with high average power (>100 W) are increasingly demanded by high-field science
Pulse compression techniques can be divided into two types: (1) nonlinear spectral broadening followed by a dispersive device for proper phase compensation and (2) soliton self-compression without further phase removal
The second type of compression relies on the formation of a high-order soliton as a result of pulse propagation in a waveguide with Kerr nonlinearity and negative group-velocity dispersion (GVD)
Summary
High-energy (>100 μJ) few-cycle optical pulses with high average power (>100 W) are increasingly demanded by high-field science. Pre-Chirp-Managed Adiabatic Soliton Compression in Pressure-Gradient Hollow-Core Fibers.
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