Terahertz (THz) radiation generation is investigated by nonlinear interaction of frequency chirped laser pulses with hot inhomogeneous plasmas. The plasma has a density ripple on its surface and linear inhomogeneity of the electron temperature. A high power laser obliquely incidents on a plasma and exerts a quasistatic nonlinear ponderomotive force on plasma electrons. This force oscillates electrons having a drift velocity with finite transverse component. The drift velocity beats with inhomogeneous density and temperature and consequently a nonlinear current density is produced which leads to the THz wave. The linear and nonlinear current densities are coupled with the wave equation and this equation is solved in the electrostatic and electromagnetic cases. In another case, the wave equation is solved numerically by considering both electrostatic and electromagnetic cases. The effects of frequency chirped parameter, incident laser intensity, and the inhomogeneities of electron density and electron temperature are studied on the amplitude of the THz wave. Results show that by increasing the THz frequency, the amplitude of the THz wave decreases. Moreover, by increasing frequency chirped parameter, incident laser intensity, and the inhomogeneities of electron density and electron temperature, the amplitude of the THz wave increases.

通过频率啁啾激光脉冲与热不均匀等离子体的非线性相互作用来研究太赫兹 (THz) 辐射的产生。等离子体在其表面上具有密度波纹和电子温度的线性不均匀性。大功率激光斜射在等离子体上，对等离子体电子施加准静态非线性有质动势。该力使具有有限横向分量的漂移速度的电子振荡。漂移速度以不均匀的密度和温度跳动，因此产生非线性电流密度，导致太赫兹波。线性和非线性电流密度与波动方程耦合，该方程在静电和电磁情况下求解。在另一种情况下，通过考虑静电和电磁情况，对波动方程进行数值求解。研究了频率啁啾参数、入射激光强度以及电子密度和电子温度的不均匀性对太赫兹波幅值的影响。结果表明，随着太赫兹频率的增加，太赫兹波的幅度减小。此外，通过增加频率啁啾参数、入射激光强度以及电子密度和电子温度的不均匀性，太赫兹波的幅度增加。太赫兹波的幅度减小。此外，通过增加频率啁啾参数、入射激光强度以及电子密度和电子温度的不均匀性，太赫兹波的幅度增加。太赫兹波的幅度减小。此外，通过增加频率啁啾参数、入射激光强度以及电子密度和电子温度的不均匀性，太赫兹波的幅度增加。