Work

Suppression of Kerr-induced satellites in multi-pulse CPA

Year: 2024

Type: article

Abstract: Amplification of bursts of ultrashort pulses is very challenging when the intraburst repetition frequency reaches the THz range, corresponding to (sub)-ps intervals between consecutive pulses. Periodic interference significantly modifies conditions for chirped pulse amplification (CPA), leading to temporal and spectral distortions during CPA due to optical Kerr nonlinearity. Multi-pulse chirped amplification to mJ energies may lead to a pronounced degradation of burst fidelity and the appearance of periodic temporal satellites after de-chirping the amplified waveform. We study, experimentally and numerically, the limitations of THz burst-mode CPA caused by self- and cross-phase modulation. A number of practical recipes to suppress nonlinear distortions and improve energy scaling by optimizing burst parameters and applying modulation techniques are presented.

Source: Optics Express

DOI: 10.1364/oe.534232

Authors: Vinzenz Stummer, Edgar Kaksis, Audrius Pugžlys, Andrius Baltuška

Language: English

Topic: Laser-Matter Interactions and Applications

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,270

Funder: Austrian Science Fund

Awards: Coherent Optical Metrology Beyond Dipole-Allowed Transitions, Intense Tunable Narrowband THz Sources