| 摘要 |
The present invention can restrain a jitter from being generated in a measurement result of light such as terahertz light which has transmitted through a device under test. A trigger signal generation device includes a first photoelectric conversion unit that applies photoelectric conversion to a probe light pulse, a second photoelectric conversion unit that applies photoelectric conversion to a pump light pulse, a first amplification unit that amplifies an output from the first photoelectric conversion unit, a second amplification unit that amplifies an output from the second photoelectric conversion unit, a trigger signal output unit that outputs a cross-correlation of outputs of the first amplification unit and the second amplification unit as a trigger signal, and a period difference adjustment unit that adjusts a difference in period between a period T3 from the output of the probe light pulse from a probe light source until the probe light pulse is fed, as the output from the first amplification unit, to the trigger signal output unit, and a period T4 from the output of the pump light pulse from a pump light source until the pump light pulse is fed, as the output of the second amplification unit, to the trigger signal output unit.
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