Theoretical Gain of Quantum-Well Wire Lasers
Theoretical Gain of Quantum-Well Wire Lasers
复制标题
量子阱线激光器的理论增益
DOI：
10.1143/jjap.24.l95
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发表时间：
1985
影响因子：
1.5
通讯作者：
Y. Suematsu
中科院分区：
文献类型：
--
作者：
M. Asada;Y. Miyamoto;Y. Suematsu
从理论上给出了电子被一维限制的量子阱线激光器的增益。由于偶极矩的各向异性，垂直于光传播方向的量子阱线获得最大增益。虽然态密度在子带边缘是无限的，但由于带内弛豫，增益仍然是有限的。因此，可以通过减少带内散射来获得高增益。100 μ m ×100 μ m Ga 0.47 In 0.53 As/InP量子阱线的增益约为100 μ m厚常规量子阱的两倍，有望降低激光阈值。
Gain is given theoretically for quantum-well wire lasers where electrons are confined one-dimensionally. Maximum gain is obtained for a quantum-well wire perpendicular to light propagation, due to anisotropy of the dipole moment. Although the density-of-states is infinite at subband edges, gain remains finite due to the intraband relaxation. Therefore, high gain can be obtained by reducing intraband scatterings. Gain in 100 Å×100 Å Ga0.47In0.53As/InP quantum-well wires is about twice that in 100 Å thick conventional quantum-wells, and reduction of the laser threshold is expected.