Abstract: There is disclosed a plasma gun for bio/medical treatment using atmospheric plasma. The disclosed plasma gun comprises a housing having an elongate chamber provided therein, the chamber having an end at which a nozzle for spraying plasma is positioned; a gas supply unit for supplying a reaction gas to the chamber; and a plasma discharge unit formed with an elongate cavity communicating with the nozzle, the plasma discharge unit including first and second electrodes and a dielectric or insulating barrier material for plasma ignition in the elongate cavity.

Abstract: A new concept of gyroscope utilizing self-modulation is introduced in a frame of a solid state ring type laser. The inventive solid state ring laser system includes a base, a laser pumping source, an active medium, a focussing unit, a detector, a magnet and a cover, wherein the magnet having an appropriate magnetic field strength to distinguish the direction of rotation and to increase the sensitivity. In the inventive gyroscope, a direct sensing of rotation is made by measuring the self-modulation frequency without complex signal processing by using a frequency counter.