In electromagnetic field gravitation emits high-energy photon with direction reverse to direction of gravitation. This phenomenon was observed during gas electric discharge in . Radiation of high energy gravitation photon was experimentally observed in numerous experiments . The peculiarity of such phenomenon consists in the fact that while pumped by IR photon the range of the gravitation photons energies lies in UV range. The application of gravitation photon emission may be in energy source due to difference of photon energies mentioned above.