CAJ | 학술논문

通过蒙特卡洛方法研究了基于共振声子散射的太赫兹量子级联激光器中杂质散射对激光器性能的影响.使用单子带静态屏蔽模型来处理电子与杂质的散射过程.发现电子与杂质的散射为电子在有源区中的注入和抽取过程提供了另外一个通道.这一过程可以影响电子在不同子带的占据数以及器件的电流.所以,在考虑基于共振声子散射的太赫兹量子级联激光器中的电子输运过程时,需要包含电子与杂质的散射过程.
통과몽특잡락방법연구료기우공진성자산사적태혁자양자급련격광기중잡질산사대격광기성능적영향.사용단자대정태병폐모형래처리전자여잡질적산사과정.발현전자여잡질적산사위전자재유원구중적주입화추취과정제공료령외일개통도.저일과정가이영향전자재불동자대적점거수이급기건적전류.소이,재고필기우공진성자산사적태혁자양자급련격광기중적전자수운과정시,수요포함전자여잡질적산사과정.
We study the influence of ionized impurity scattering on the electron transport in resonant-phonon-assisted terahertz (THz) quantum-cascade lasers (QCLs). We treat the ionized impurity scattering rates within the single subband static screening approximation. We find that the ionized impurity scattering supplies an additional current channel across the device,and affects the electrondistribution in different subbands. We conclude that the ionized impurity scattering should be taken into account in the study of the transport properties of resonant-phonon-assisted THz QCLs.