Improved wall plug efficiency of a 1.9THz quantum cascade laser by an automated design approach
Improved wall plug efficiency of a 1.9THz quantum cascade laser by an automated design approach
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DOI：
10.1063/1.3030881
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发表时间：
2008-11
影响因子：
4
通讯作者：
J. Freeman;Owen J. Marshall;H. Beere;D. Ritchie
中科院分区：
文献类型：
--
作者：
J. Freeman;Owen J. Marshall;H. Beere;D. Ritchie
We demonstrate an improvement in the wall plug efficiency in a bound-to-continuum quantum cascade laser operating below 2THz. This was achieved by targeting one perceived weakness in a previous design, extraction from the lower laser state. This targeted improvement was made possible by employing an automated search algorithm to select a design giving rise to specified electronic states. The resulting laser design represents the highest wall plug efficiency below 2THz and the lowest frequency devices to operate in the high-power single plasmon waveguide. The device displays a wall plug efficiency of 1.2% per facet, double the reference design.
