A fast tunable, Spontaneous Parametric Down Conversion (SPDC) light source in the saturated regime is presented. A 25 mm long, fanned pp:LN crystal combined with a translation stage provides a scanning speed of 100 nm/s. The light source is characterized in terms of scanning speed, spectral coverage, wavelength repeatability and power. Based on recently developed theory for SPDC light sources in the saturated regime, we discuss slope efficiency and pump power threshold for entering the high gain regime.
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