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激光照射下光学材料的损伤过程中,导带电子的加热和碰撞电离是非常重要的过程,影响着导带电子的产生、晶格能量的沉积和破坏.分析了Drude模型的局限性,从经典力学出发求解了周期量级激光场中导带电子的运动方程,计算了导带电子的光吸收和碰撞电离,分析了激光强度、载波相位等对碰撞电离的影响.
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关键词:
- 周期量级超短激光脉冲 /
- 导带电子 /
- 碰撞电离
We discuss the limitation of classical Drude Model, solve the kinematics equation for electrons in the few-cycle laser field, and calculate the photon absorpti on of conduction-band electrons(CBE) and impact ionization under irradiation of few-cycle ultrashort laser pulses. The effects of laser intensity, carrier-en velope-phase on impact ionization are discussed.







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