  A femtosecond pump-probe setup is described that is optimised for broadband
transient reflectivity experiments on solid samples over a wide range of
temperatures. By combining a temporal resolution of 45 fs and a broad detection
range between 1.75 and 2.85 eV, this apparatus can provide insightful
information on the interplay between coherent collective modes and high-energy
electronic excitations, which is one of the distinctive characteristics of
strongly interacting and correlated quantum systems. The use of a single-shot
readout CMOS array detector at frame rates up to 10 kHz allows to resolve
coherent oscillations with amplitudes below 10$^{-4}$ in $\Delta$R/R. We
demonstrate the operation of this setup on the prototypical charge-transfer
insulator La$_2$CuO$_4$, revealing the presence of coherent optical phonons
with frequencies as high as 13 THz.
