Abstract
The design and simulation of an In0.53 Ga0.47 As Al0.56 As0.44 Sb quantum-cascade laser emitting in the near infrared is presented. Designed using a self-consistent rate equation solver coupled with an energy balance rate equation, the proposed laser has a calculated population inversion of ∼20% at 77 K and sufficient gain to achieve room-temperature laser emission at λ∼2.8 μm. Threshold currents in the range 4-8 kA cm2 are estimated as the temperature increases from 77 K to 300 K. The output characteristics of the proposed laser are compared to an existing λ∼3.1 μm In0.53 Ga0.47 As Al0.56 As0.44 Sb quantum-cascade structure presented in the literature.
Original language | English |
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Article number | 141109 |
Number of pages | 3 |
Journal | Applied Physics Letters |
Volume | 87 |
Issue number | 14 |
DOIs | |
Publication status | Published - 3 Oct 2005 |
Externally published | Yes |