METHOD FOR EXCITING GAS LASER WITH PULSE-PERIODIC HIGH-FREQUENCY VOLTAGE Russian patent published in 2003 - IPC

FIELD: quantum electronics; electrically excited gas-discharge laser systems. SUBSTANCE: method used in developing high-frequency excited CO₂ laser involves laser pumping with incompletely matched active element impedance of laser and output resistance of high-frequency oscillator operating at fixed frequency in pulse-periodic mode with controlled radio-pulse on-off time ratio Q. Reliable firing of high-frequency gas discharge is ensured by building up high peak power at output of high-frequency oscillator, safe thermal conditions for output transistors being provided due to adequate choice of radio-pulse on-off time ratio Q. In addition radio pulse repetition rate is set at level not to exceed deionization time. Upon firing discharge in radiator discharge gap on-off time ratio Q is controlled to set desired mode of laser radiation. Method provides for simple and effective control of laser radiation modes and simplified matching mode. EFFECT: enhanced efficiency and operating reliability of high-frequency oscillator. 1 cl, 3 dwg