From an Article at www.tfot.info: “Andrews Space & Technology (AS&T) introduced an innovative propulsion system that could significantly shorten round trips from Earth to Mars ...
Using a photonic laser and a sophisticated photon beam amplification system, Dr. Bae demonstrated that photonic energy could generate amplified thrust between two spacecraft by bouncing photons many thousands of times between them.The patent-pending Bae Photonic Laser Thruster (PLT) was built and monitored with off-the-shelf laboratory components at the Southern California laboratory of the Bae Institute. With an amplification factor of 3,000, the photon thrust generated from the egg-sized laser head in the PLT prototype is equivalent to the thrust that can currently only be generated by orders-of-magnitudes larger and heavier industrial or weapons-grade lasers.Although PLT can be used for a wide range of space applications, including accelerating spacecraft to near light speed, Dr. Bae has more immediate goals.