Large Stark shifts of the local to global state intersubband transitions in step quantum wells

Y. J. Mii, R. P.G. Karunasiri, K. L. Wang, M. Chen, P. F. Yuh

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58 Citations (Scopus)

Abstract

Large Stark shifts of intersubband transitions in a step quantum well are observed for the first time. The Stark shifts are ∼8 and 7 meV at ∼18 kV/cm for the 1→2 and 1→3 intersubband transitions, respectively, while the Stark shift of a similar transition in a square quantum well is only about 0.5 meV under the same bias condition. The intersubband transitions in step quantum wells can be either red or blue Stark shifted depending on the direction of the applied electric field. The large Stark shifts of intersubband transitions in the step quantum wells can be exploited for the fabrication of optical modulators operating in the range from mid to far infrared.

Original languageEnglish
Pages (from-to)1986-1988
Number of pages3
JournalApplied Physics Letters
Volume56
Issue number20
DOIs
Publication statusPublished - 1990

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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