光泵太赫兹放大器中Manley-Rowe量子效率极限的超越
Exceeding the Manley-Rowe quantum efficiency limit in an optically pumped THz amplifier
摘要：
利用基于麦克斯韦-半导体布洛赫方程的微观理论，研究了光辅助电驱动太赫兹量子级联激光器的可能性。而在光转换方案中，功率转换效率受到Manley-Rowe关系的限制，所提出的光辅助方案可以通过相干地恢复光泵浦能量来实现更高的效率。此外，由于量子相干性效应，减轻了散射的有害影响。
英文摘要：
Using a microscopic theory based on the Maxwell-semiconductor Bloch equations, we investigate the possibility of an optically-assisted electrically-driven THz quantum cascade laser. Whereas in optical conversion schemes the power conversion efficiency is limited by the Manley-Rowe relation, the proposed optically-assisted scheme can achieve higher efficiency by coherently recovering the optical pump energy. Furthermore, due to quantum coherence effects the detrimental effects of scattering are mitigated.
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