  Warm rubidium vapours are known to be a versatile medium for a variety of
experiments in atomic physics and quantum optics. Here we present experimental
results on producing the frequency converted light for quantum applications
based on spontaneous and stimulated processes in rubidium vapours. In
particular, we study the efficiency of spontaneously initiated stimulated Raman
scattering in the {\Lambda}-level configuration and conditions of generating
the coherent blue light assisted by multi-photon transitions in the
diamond-level configuration. Our results will be helpful in search for new
types of interfaces between light and atomic quantum memories.
