Enhancement and modulation of terahertz radiation by multi-color laser pulses<xref rid="cpb_27_8_084209_fn1" ref-type="fn">*</xref><fn id="cpb_27_8_084209_fn1"><label>*</label><p>Project supported by the National Natural Science Foundation of China (Grant No. 11604205) and the Talent Program of Shanghai University of Engineering Science, China.</p></fn>

Enhancement and modulation of terahertz radiation by multi-color laser pulses**

Project supported by the National Natural Science Foundation of China (Grant No. 11604205) and the Talent Program of Shanghai University of Engineering Science, China.

Pei Min-Jie¹, Lu Chen-Hui^{2, †}, Wang Xian-Wei³, Sun Zhen-Rong¹, Zhang Shi-An^{1, ‡}

THz yield U_THz versus laser wavelength λ₅ of the uncommon five-color laser pulse. It is noted that the laser wavelengths near the pump harmonic spectral range are excluded from the replaceable wavelengths to keep the whole laser energy constant.