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Design of a spin-polarized terahertz quantum cascade laser tunable by magnetic field
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10.1063/1.2219423
/content/aip/journal/apl/89/1/10.1063/1.2219423
http://aip.metastore.ingenta.com/content/aip/journal/apl/89/1/10.1063/1.2219423
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

The conduction band profile, size-quantized energy levels, and squared wave functions for one full period and parts of adjacent periods of the QCL for (a) spin-down electrons at an electric field of and (b) spin-up electrons at an electric field of ; both for magnetic field of . States 1 and (solid line), 2 (dash-dotted line), and 3 and (dashed line) denote the ground, lower laser, and upper laser levels, respectively. State belongs to the preceding period, while state belongs to the following period.

Image of FIG. 2.
FIG. 2.

Optical transition energies of spin-down (solid line) and spin-up electrons (dashed line) vs magnetic field. The electric field necessary for the ground state and the upper laser level of the next period to anticross, as it depends on the magnetic field, for spin-down (solid line), and spin-up electrons (dashed line), is shown in the inset.

Image of FIG. 3.
FIG. 3.

Optical gain vs electric field of spin-down transitions for magnetic fields of (solid line) and (dash-dotted line) and spin-up transitions for magnetic fields of (dashed line) and (dash-double dotted line). The corresponding resonator losses (horizontal lines) are also given. Inset: optical gain vs magnetic field of spin-down transitions for electric fields of (solid line) and (dash-dotted line) and spin-up transitions for electric fields of (dashed line) and (dash-double dotted line).

Image of FIG. 4.
FIG. 4.

Current density vs electric field of spin-down electrons for magnetic fields of (solid line) and (dash-dotted line) and spin-up electrons for magnetic fields of (dashed line) and (dash-double dotted line). Inset: current density vs magnetic field of spin-down electrons for electric fields of (solid line) and (dash-dotted line) and spin-up electrons for electric fields of (dashed line) and (dash-double dotted line).

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/content/aip/journal/apl/89/1/10.1063/1.2219423
2006-07-06
2014-04-23
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Design of a ZnMnSe∕ZnMgSe spin-polarized terahertz quantum cascade laser tunable by magnetic field
http://aip.metastore.ingenta.com/content/aip/journal/apl/89/1/10.1063/1.2219423
10.1063/1.2219423
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