Terahertz coherent detection via two-color laser pulses of various frequency ratios

Gu Xin-Yang¹, Wang Ke-Jia¹, Yang Zhen-Gang², Liu Jin-Song^{1, †}

Peak of signal intensities I ω 2 T versus the relative-phase Δ φ of two lasers with frequency rates (a) ω 2 / ω 1 = 2 n . (b) ω 2 / ω 1 = n + 1 / 2 ( n ≤ 3 ). (c) ω 2 / ω 1 = 2 , 3, 5, 7. The insets in panel (a) are the temporal waveforms of I ω 2 T with ω 2 / ω 1 = 2 when Δ φ = 0 and π.