A low threshold current density InAs/AlGaSb superlattice quantum cascade laser operating at 14 μm

Keita Ohtani, Kazuue Fujita, Hideo Ohno

研究成果: Article査読

20 被引用数 (Scopus)

抄録

We report a low threshold current density InAs/AlGaSb superlattice quantum cascade laser operating at 14 μm. In order to reduce the threshold current density, InAs/AlGaSb superlattice structures providing large oscillator strength and fast carrier depopulation are used for the active layers. Observed threshold current density at 80 K is 0.92kA/cm2, which is about 5 times lower than that of the first InAs/AlSb quantum cascade laser reported earlier. This is among lowest threshold current density of quantum cascade lasers operating in the mid-infrared spectrum region.

本文言語English
ページ(範囲)L879-L881
ジャーナルJapanese Journal of Applied Physics, Part 2: Letters
43
7 A
DOI
出版ステータスPublished - 2004 7 1

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy (miscellaneous)
  • Physics and Astronomy(all)

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