Abstract
An investigation has been made into the influence of life testing of narrow-stripe proton-isolated DH AlGaAs on their output fluctuation spectra in the range 0.1-1.6 GHz. The lasers show intrinsic optical fluctuation behaviour before life testing. The experiments indicate that this behaviour is maintained for facet-coated lasers during at least 5000 h of accelerated life testing at elevated temperatures.
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