  Active frequency-chirp compensation for a narrowband pulsed Titanium-Sapphire
laser system is demonstrated using an intra-cavity electro-optic modulator
resulting in improved spectral resolution and stability. With referencing to an
optical frequency comb and further residual frequency chirp detection from
shot-to-shot measurements, the resulting laser pulses are frequency
up-converted for high-precision spectroscopy measurements in the VUV regime,
where the relative uncertainty contribution due to frequency chirp is pushed to
the $5 \times 10^{-11}$ level.
