Abstract: An Identification-Friend-or-Foe System Using Variable Codes (IFF System) lizes variable codes and pre-selected encryption/decryption technology to querry potential targets as to their battlefield affiliation and also to identify itself as a friend to a potential attacker. The IFF System performs a querry by sending a narrow laser beam to the potential target which is accompanied or closely followed by a radio frequency (RF) wave modulated with encrypted identification information. If the potential target is also equipped with the IFF System and in possession of the valid code, then the received RF wave can be decrypted to reveal the potential attacker as a friend. The potential target, then, encrypts its own identification information using the same code and transmits it via RF wave to the potential attacker. Thus fratricides may be avoided.

Abstract: A transmitting device for transmitting a plurality of spatially separate laser beams over a single fiberoptic glass monofilament, for conveying a plurality of signals without multiplexing. Means are provided for generating a plurality of laser beams, each of which are directed into the core of the fiberoptic monofilament of glass at a different angle to the longitudinal axis of the monofilament. Each of the beams also exits from the exiting end of the monofilament at different angles. Those inserted at an angle of the longitudinal axis exit in a conical annulus having the same angle as the angle in which the beam was originally inserted into the monofilament. Means are provided for intercepting each of said signals as they exit from the exiting end of the monofilament and converting them into electrical energy or extracting data therefrom.

Abstract: A power transmission device for transmitting electric power optically to ote locations. The device includes a laser for generating a laser light beam and a optical glass monofilament having a glass core and a outer cladding layer designed to convey the light beams directed into one end of said monofilament to the other end thereof. Means are provided for directing the laser beam into the receiving end of the monofilament at a predetermined angle which causes the light beam to exit from the other end of the monofilament at the base predetermined angle in a conical annulus of light. A conical reflector is disposed within the conical annulus of light exiting from the exit end of the fiber optical monofilament and has a surface that intercepts the light beams within the conical annulus and reflects them along a different path. Disposed around the conical reflector is a plurality of photovoltaic cells in a position to intercept the reflected light beams and to convert the light beams to electric current.

Abstract: A hydrogen fluoride/deuterium fluoride chemical laser having low concentration of deactivants is provided by the application of external heat rather than by internal combustion to cause thermal decomposition of the normal diatomic fluorine to convert it to atomic fluorine. This is accomplished by external heating of inert gases that then heat the diatomic fluorine or by directly heating from an external source the diatomic fluorine to form atomic fluorine. The formed atomic fluorine is then mixed with hydrogen and/or deuterium in a laser chamber to produce lasing of the gases when brought together in a conventional manner and therefrom a laser output.