Directed Energy Propulsion - The Path to Radical Advancement

High power directed energy solutions offer a radically different approach to both space propulsion and long range power applications. While chemistry will get us to Mars it will not allow rapid interplanetary nor interstellar capability. None of our current propulsion systems, including nuclear, are capable of the ultra high speeds needed for rapidly exploring the solar system and for the future capability of relativistic flight to enable interstellar exploration. However, recent advances in photonics and directed energy systems now allow us to realize the ability to project the high power over vast distances that is needed for space applications. When operated in direct drive photon momentum exchange, extremely high speeds including relativistic flight become possible. When used in indirect drive mode where the beamed power is converted to electrical power to drive high I_sp ion engines, we can realize high mass missions in our solar system at vastly higher speeds and shorter mission times than chemistry. The same core technology can be used for many other purposes including planetary defense, stand-off asteroid composition analysis, space debris mitigation, power beaming to long range spacecraft and other distant assets, LEO and GEO power beaming from Earth and space among many others applications. We are currently in three Phase II NASA NIAC R&D programs. We will discuss the roadmap ahead and both the short term and long term milestones that allow for a logical and cost effective approach.