A computerized method for predicted laser emission wavelength using photocurrent spectroscopy.
01 January 1985
Photocurrent spectra can be used to predict the emission wavelength of lasers made from A1GaAs(DH) wafers. The original work used manually acquired data which was interpreted by a manual method. This memo reports a system for automating both data acquisition and interpretation using numerical differentiation algorithms to characterize the band edge. The result is a time savings of 50per measurement and a more reproducible identification of the band edge.