Method and device for fast energy measuring, and application to the measuring of the energy produced by a pulse laser

摘要

the device comprises a material (16) having a large dipole moment, dipole can move freely, the material being capable of absorbing the energy of the beam (12).the interaction of the beam and the material, leading to a rise in temperature of the material, is proportional to the energy absorbed.in a variation of the dielectric constant of the material, and means (20, 22, 24) for measuring the variation of the dielectric constant.