ELECTROOPTICAL SAMPLING PROBER

摘要

PROBLEM TO BE SOLVED: To provide a positioning mechanism of an electrooptical crystal that is simple and does not require any experience in electrooptical sampling measurement. SOLUTION: The electrooptical sampling prober for observing the waveform of a signal to be measured according to the polarization state of an incident light pulse by connecting an electric field being generated by a signal to be measured to the electrooptical crystal and applying the light pulse being generated based on a timing signal to the electrooptical crystal is provided with an electrooptical crystal 1 with a collar-shaped stopper at an upper part, an electrooptical crystal retention part 2 that retains the electrooptical crystal 1 with the above stopper so that it does not fall and at the same time the electrooptical crystal 1 can be moved up and down, and an electrooptical crystal drive part 3 for linearly driving the electrooptical retention part 2 in the direction of the light axis of the above light pulse while the electrooptical crystal retention part 2 is mounted.