Abstract
We demonstrate temporal shape improvement of a short laser pulse using chirped aperiodic nonlinear frequency converter within an optical parametric amplifier. The aperiodic converter generated walk-off free high spatial quality pulse with ∼40% efficiency second harmonic while preserving the pump bandwidth. A <300 fs idler pulse was generated, with ∼10 nm central wavelength tunability around 1053 nm by pump generation and phase matching control. A pronounced contrast pedestal suppression of up to 40 dB was observed within a few picoseconds range around the peak. Such pedestal suppression has good scalability potential to high energies.
Original language | English |
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Article number | 075503 |
Journal | Physica Scripta |
Volume | 97 |
Issue number | 7 |
DOIs | |
State | Published - 1 Jul 2022 |
Bibliographical note
Publisher Copyright:© 2022 IOP Publishing Ltd.
Keywords
- aperiodicly poled crystal
- non-linear optics
- parametric amplifiers
- pulse contrast
- second harmonic
- ultrafast laser