Gain characteristics of quantum dot injection lasers
Gain characteristics of quantum dot injection lasers
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DOI：
10.1088/0268-1242/14/1/020
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发表时间：
1999
影响因子：
1.9
通讯作者：
A. E. Zhukov;A. Kovsh;V. M. Ustinov;A. Egorov;N. Ledentsov;A. F. Tsatsul'nikov;M. V. Maximov;Y. Shernyakov;V. I. Kopchatov;A V Lunev;P. Kop’ev;D. Bimberg;Z. Alferov
中科院分区：
文献类型：
--
作者：
A. E. Zhukov;A. Kovsh;V. M. Ustinov;A. Egorov;N. Ledentsov;A. F. Tsatsul'nikov;M. V. Maximov;Y. Shernyakov;V. I. Kopchatov;A V Lunev;P. Kop’ev;D. Bimberg;Z. Alferov
Gain characteristics of injection lasers based on self-organized quantum dots (QDs) were studied experimentally for two systems: InGaAs QDs in an AlGaAs matrix on a GaAs substrate and InAs QDs in an InGaAs matrix on an InP substrate. A ground-to-excited state transition was observed with increasing threshold gain. An empirical equation is proposed to fit the current density dependence of the QD gain. This fitting equation is shown to be valid for both the ground and excited state lasing in the systems under study in the 77-300 K temperature range. The effect of QD surface density on gain characteristics is calculated analytically.
