Excitation of TE_n electromagnetic waves with a high transverse index and dependence of the threshold and efficiency of laser diodes on the order of excited mode

V. I. Borodulin, V. I. Shveikin


Abstract: The conditions for the excitation of high-order TE_n waves in an injection laser with a Fabry–Perot resonator are analyzed theoretically allowing for the dependence of the reflection coefficients of the resonator mirrors on the electromagnetic field configuration in a three-layer waveguide. Analytic expressions are obtained for the threshold current density and differential efficiency of laser diodes as a function of the waveguide structure parameters and of the transverse index n of the excited TE_n wave. It is shown that, for certain properties of the waveguide structure, the minimum threshold corresponds to waves with n > 0. The maximum differential efficiency of injection lasers corresponds to the dominant mode TE₀.

UDC: 621.378.325

PACS: 42.55.Px, 42.60.Jf, 42.60.Lh, 42.60.Da

Received: 18.04.1972

 English version: Soviet Journal of Quantum Electronics, 1974, 4:1, 28–31