  The radiation mechanism of fast radio bursts (FRBs) has been extensively
studied but still remains elusive. In the search for dark matter candidates,
the QCD axion and axionlike particles (ALPs) have emerged as prominent
possibilities. These elusive particles can aggregate into dense structures
called axion stars through Bose-Einstein condensation (BEC). Such axion stars
could constitute a significant portion of the mysterious dark matter in the
universe. When these axion stars grow beyond a critical mass, usually through
processes like accretion or merging, they undergo a self-driven collapse.
Traditionally, for spherically symmetric axion clumps, the interaction between
axions and photons does not lead to parametric resonance, especially when the
QCD axion-photon coupling is at standard levels. Nevertheless, our study
indicates that even QCD axion stars with typical coupling values can trigger
stimulated decay during their collapse, rather than producing relativistic
axions through self-interactions. This process results in short radio bursts,
with durations of around 0.1 seconds, and can be potentially observed using
radio telescopes like FAST or SKA. Furthermore, we find that collapsing axion
stars for ALPs with specific parameters may emit radio bursts lasting just
milliseconds with a peak luminosity of $1.60\times10^{42}\rm{erg/s}$, matching
the characteristics of the observed non-repeating FRBs.
