AUTOCORRELATOR

摘要

Disclosed is an autocorrelator for generating an autocorrelation signal for an ultrashort pulse to measure the ultrashort pulse. The autocorrelator comprises: a light source unit for generating an optical pulse; a double wedge interferometer in which a first wedge and a second wedge serving as a wedge-shaped optical medium are arranged such that facing surfaces of the first and second wedges are parallel to each other, so as to separate the optical pulse provided by the light source unit to generate two optical pulses; a harmonic light medium for receiving the generated two optical pulses to generate second harmonic light; and a measurement unit for detecting the second harmonic light to generate an autocorrelation signal. Thus, the time width of an ultrashort pulse can be measured by an interferometer using only two wedge-shaped optical components.

主权项

1. An autocorrelator, comprising:
a light source unit configured to generate an optical pulse; a double-wedge interferometer arranged so that opposing surfaces of a first wedge and a second wedge, which are wedge-shaped optical media, are parallel to each other, and configured to generate two optical pulses by dividing the optical pulse provided by the light source unit; a harmonic wave medium configured to receive the two generated optical pulses, and generate a secondary harmonic wave; and a measurement unit configured to detect the secondary harmonic wave and generate an autocorrelation signal.