Atomic coherence is the interaction process between light and atoms, that is one or more
coherent fields couple the different atomic states and cause the quantum interference between the
different transition channels. Atomic coherence has led to many interesting and unexpected
consequences, such as the Hanle effects, electromagnetically induced transparency (EIT), coherence
population trapping (CPT), stimulated Raman adiabatic passage (STIRAP), spontaneous emission
control, resonant enhancement of optical nonlinearity, slow and superluminal light propagation,
quantum light storage, etc. In which, light storage based on atomic coherence plays an important role in
the coherent control of light pulse information. In this chapter, we present some previous works on
atomic coherence and optical storage. Firstly, we present the storage and recovery of light pulse based
on F-STIRAP, which is fundamentally different from the conventional EIT-based process. Secondly, we
present the applications of light storage based on EIT in a Pr3+:Y2SiO5 crystal, which includes the
erasure of stored optical information, all-optical routing by light storage, and the coherent control of
double light pulses. At last, we propose theoretically and demonstrate experimentally a method to
control the atomic coherence by a STIRAP or F-STIRAP process.