Patent ID: 8237122
Filing Date: 2012-08-07
Classification: G01B,G01N,G02B,H01S

Abstract:
1. A system for imaging in the THz spectral range comprising: a coherent dual scanning laser system (CDSL) comprising two passively modelocked fiber oscillators, said modelocked oscillators configured to operate at slightly different repetition rates, such that a difference δfr in repetition rates is small compared to the values fr1 and fr2 of the repetition rates of said oscillators; a feedback system for stabilizing the difference in the repetition rates of the two oscillators, wherein information generated by said feedback system is used to generate a frequency grid in the RF domain that has a 1:1 correspondence to a frequency grid in the THz domain, and allowing an RF frequency to be scale to a THz frequency; a material emitting THz radiation in response to an output of said CDSL; and a detector responsive to said THz radiation.