Robustness of phase coherence against amplification in a flashlamp-pumped multi-pass femtosecond laser |
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Authors: | Corsi C Bellini M |
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Institution: | (1) European Laboratory for Non Linear Spectroscopy (L.E.N.S.), Via N. Carrara, 1, 50019 Sesto Fiorentino (FI), Italy;(2) Istituto Nazionale di Ottica Applicata, L. go E. Fermi, 6, 50125 Firenze, Italy |
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Abstract: | We show that the phase of an ultra-short laser pulse undergoing the process of chirped-pulse amplification in a flashlamp-pumped multi-pass configuration is surprisingly well locked to the phase of the original pulse emitted by a mode-locked oscillator. We demonstrate that the relative phase jitter introduced in the amplification remains small (<0.1 rad r.m.s.) and does not spoil the visibility of fringes obtained in an interferometric experiment. These results indicate that, using a carrier-phase-stabilized seed laser, the generation of phase-controlled, high-intensity laser pulses is possible and relatively straightforward even with the commonly available flashlamp-pumped amplification systems. PACS 42.65.Re; 42.62.Eh; 42.25.Kb |
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