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首页> 外文期刊>Journal of Crystal Growth >The reproducibility and transferability of a THz quantum cascade laser design between two MBE growth manufacturers' platforms
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The reproducibility and transferability of a THz quantum cascade laser design between two MBE growth manufacturers' platforms

机译:两个MBE生长制造商平台之间的THz量子级联激光器设计的可重复性和可转移性

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摘要

We report a comprehensive study into the growth of a 2.9 THz quantum cascade laser structure on two different molecular beam epitaxy manufacturers' systems; within a single growth campaign and over multiple growth campaigns. Device performance figures are compared from all the lasers grown, demonstrating excellent structure reproducibility, not only between each growth campaign, but also between the two MBE systems; including using different combinations and types of group HI effusion cells. A small systematic shift in the emission frequency of ~0.1 THz between the two systems was observed. The mechanisms behind this small shift in emission frequency were investigated and partly attributed to differences in the flux profiles associated with the type of aluminium effusion cells used and inhomogeneous broadening in the structure, possibly due to interface roughness.
机译:我们报告了对两种不同分子束外延制造商系统上的2.9 THz量子级联激光器结构的生长的全面研究;在单个增长活动中以及在多个增长活动中。比较了所有生长激光器的器件性能数据,不仅在每次增长活动之间,而且在两个MBE系统之间,都显示出优异的结构可重复性;包括使用不同的组合和类型的HI渗出池。观察到两个系统之间的〜0.1 THz发射频率有一个小的系统偏移。研究了这种发射频率小位移背后的机理,部分归因于与所使用的铝扩散池类型相关的通量分布的差异以及结构的不均匀展宽,这可能是由于界面粗糙度所致。

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