  The very high energy gamma-ray emissions from pulsars are usually considered
to be dominated by leptonic scenario since the hadronic flux is weak. We point
out that the gluon condensation predicted by a nonlinear QCD evolution equation
may greatly enhance the cross sections of proton-target interactions and give
rise to a characteristic broken power law in the gamma-ray spectra. The result
is used to explore the gluon condensation signature in the observed gamma-ray
spectra from pulsars.
