| 摘要 |
<p>A storage time measurement unit 46 accepts as time measurement timing signals a reference pulse CP from a Q switch control unit and a high-frequency oscillation control signal ec from a sequence control unit 42, to measure the storage time corresponding to each reference pulse. A pulse order count unit 48 accepts a reference pulse CP as a count object signal from the Q switch control unit and a Q-switching control signal qc as a count period control signal from the sequence control unit 42, to count the order of each reference pulse in a pulse train. On a reference pulse CP(i) basis, a degree of modulation control unit 50 receives storage time measurement data TG(i) and order value count data <i> fed respectively from the storage time measurement unit 46 and the pulse order count unit 48, and based on the above measurement data TG(1), <i> and on a desired setting value (a fixed value) from a setting unit, computes the degree of modulation ÄMDÜ corresponding to that reference pulse CP(i). Then, a degree of modulation control signal mc corresponding to the thus obtained degree of modulation ÄMDÜ is imparted to the Q switch control unit. <IMAGE></p> |
