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Baum, P.; Lochbrunner, Stefan; Piel, J.; Riedle, Eberhard ORCID: 0000-0002-2672-5718 (February 2003): Phase-coherent generation of tunable visible femtosecond pulses. In: Optics Letters, Vol. 28, No. 3: pp. 185-187
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Stable interference between the outputs of two noncollinearly phase-matched optical parametric amplifiers seeded by separate white-light continua has been observed. This means that the tunable visible pulses have a well-defined relative phase and that the temporal jitter between them is less than 1 fs. The residual phase variations are due to fluctuations of the pump power. 2003 Optical Society of America.