| 摘要 |
PURPOSE:To obtain large output laser light in the state that high laser oscillation efficiency is maintained, by installing a discharge tube extention part in the downstream of laser medium gas flow, which part is constituted by extending a discharge tube by a specified length determined by the pumping life of laser medium gas and the average gas flow velocity. CONSTITUTION:A discharge tube 2 is arranged so as to penetrate a cavity resonator. The length of the tube is extended by a specified length, toward the downstream of laser medium gas flow in the discharge tube from the end portion of the resonator, which specified length is determined by the pumping life tau of medium gas and the average gas flow velocity (upsilon). Hence, in the cavity resonator 1, adequate discharge suitable for laser oscillation is obtained, and the laser medium gas 6 contained in the cavity resonator 1 is utilized for laser oscillation. The laser medium gas contained in the discharge tube extention part 11 outside the cavity resonator is not heated by microwave because said gas exists outside the resonator. Said gas is in the pumping state, and therefore can be effectively used for laser oscillation. |
