DETERMINATION OF THE ENERGY OF A PULSED LASER BEAM BY TRANSFER OF THE PHOTON MOMENTUM TO A BALLISTIC TORSIONAL PENDULUM

摘要

An instrument has been designed and constructed which is capable of measuring high energies of pulsed laser beams without seriously interfering with their simultaneous use in an experiment. Transfer of the photon momentum of the beam to angular momentum of doubly-reflecting ballistic torsional pendulum was the principle by which photon momentum effects were successfully measured.