DIELECTRIC-WAVEGUIDE MODE OF LIGHT PROPAGATION IN <i>p-n</i> JUNCTIONS

The condition for coherent laser emission from forward-biased p-n junctions [1-3] can be written as [4] [equation 1]...&#13;\n&#13;\nIn order for the reported values [1-3] of Ic/A to agree with Eq. (1), must must use values pf d ~50 μ [4]. The question arises as to the nature of the mechanism which could confine the light generated near the junction to such small distances.