论文标题
在诱发的LIFSHITZ转变中，通过相干sub-thz辐射产生了第二和第三谐波
Second and third harmonics generation by coherent sub-THz radiation at induced Lifshitz transitions in gapped bilayer graphene
论文作者
论文摘要
在低能量光子激发诱导的LIFSHITZ TRUSINITIONS下，使用强相干电磁辐射与间隙双层石墨烯的相互作用的微观非线性量子理论。密度矩阵的liouville-von neumann方程在非绝热多光激发方向上求解。通过数值溶液，我们通过两个线性极化的相干电磁波在相反方向传播的两个线性极化的相干电磁波在诱导的LIFSHITZ跃迁中的第二和第三谐波产生的速率。获得的结果表明，间隙双层石墨烯可以作为在频率的sub-Thz结构域中生成均匀和奇数高谐波的有效介质。
Using the microscopic nonlinear quantum theory of interaction of strong coherent electromagnetic radiation with a gapped bilayer graphene is developed for high harmonic generation at low-energy photon excitation-induced Lifshitz transitions. The Liouville-von Neumann equation for the density matrix is solved numerically at the nonadiabatic multiphoton excitation regime. By numerical solutions, we examine the rates of the second and third harmonics generation at the particle-hole annihilation in induced Lifshitz transitions by the two linearly polarized coherent electromagnetic waves propagating in opposite directions. The obtained results show that the gapped bilayer graphene can serve as an effective medium for generation of even and odd high harmonics in the sub-THz domain of frequencies.
