CAJ | 학술논문

基于飞秒激光激励闪锌矿晶体的太赫兹源实现方法较为简单，已有研究证明发射效率与晶体晶向选择，飞秒激光入射角以及偏振态相关，文章通过详细的理论分析与数学计算，讨论了正入射以及斜入射情况下太赫兹辐射最优化条件，获得了明确的飞秒激光入射角、偏振态、晶体晶向的选择依据，对提高太赫兹输出效率具有重要的指导意义。
기우비초격광격려섬자광정체적태혁자원실현방법교위간단，이유연구증명발사효솔여정체정향선택，비초격광입사각이급편진태상관，문장통과상세적이론분석여수학계산，토론료정입사이급사입사정황하태혁자복사최우화조건，획득료명학적비초격광입사각、편진태、정체정향적선택의거，대제고태혁자수출효솔구유중요적지도의의。
The THz radiation sources based on the optical rectification in the zincblende crystals under the ultrafast la-ser pulse excitation are convenient to be employed. It has been demonstrated that THz generation based on optical rectifica-tion can be strongly affected by the crystallographic orientation,the polarization and the incident angle of incident beam. This paper presents a set of equations describing the terahertz generation based on optical rectification in zincblende crystals. The dependence of terahertz emission effciency on the polarization,incident angle and crystal-orientation is discussed. We have demonstrated the optimal combination of parameters above to optimize the emission effciency.