Abstract
Dual-frequency oscillation is obtained and investigated in a new type of injection heterolaser, an interband two-stage cascade laser with a tunneling p-n junction separating two active regions with quantum wells located in a common waveguide. The laser design provides for simultaneous oscillation at the first-order TE mode of wavelength λ = 1.086 μm and the second-order TE mode of wavelength λ = 0.96 μm in the continuous-wave regime at room temperature.
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