  Conditions are analysed when in dense and hot nuclear matter large amounts of
Bose particles can be created. An intensive production of Bose particles is the
main necessary condition for realizing their coherent emission similar to
radiation from photon lasers. The consideration is based on the multichannel
model of nuclear matter. Analysis shows that possible candidates for
nuclear--matter lasing are mesons (mainly pions), dibaryons, and gluons.
