On the determination of internal optical mode loss of semiconductor lasers

摘要

Use is made of a numerical simulation of the light-current characteristic to examine the errors which may arise in the determination of the optical mode loss (α ↓(i) ) from the cavity length dependence of the external differential efficiency (η↑(d)↓(ext)) In particular, we focus on the effects of incomplete Fermi level pinning and carrier leakage, and show that α↓(i) can only be determined correctly if η↑(d)↓(ext) is determined under conditions where it is invariant both with current level and temperature. # 1997 American Institute of Physics. S0003-6951 (97)03318-4