Optical frequency comb offset frequency quantum interference detection

摘要

A method for determining the offset frequency of the frequency comb is presented. The method is regularly repeated in the time domain to produce a light beam having a waveform that exhibits a frequency comb in the frequency domain, directing the light beam to an incident point in the material, and photocurrent in the material caused by the light beam. Detecting the vibration of the. Notably, the light beam has an optical bandwidth that includes light propagating at a first frequency and a second frequency, the first frequency being less than the second frequency and the second frequency being less than the second frequency. The ratio of 1 to frequency is n:m, n=m+i, m is an integer greater than 1, and n and i are positive integers. In addition, the material has a bandgap that is no more than n times the first frequency.