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Room temperature photoluminescence spectra of multilayer structures with a nominal layer thickness of and grown at on , off and off (100) towards  substrates.
TE polarized net modal absorption spectra for low (squares) and high— (circles) growth rate samples grown on off (100) towards  (open symbols) and (closed symbols) substrates.
TE polarized modal gain for injected current densities of measured at temperatures of 175 and for the high growth rate sample on off (100) substrate.
TE polarized modal gain spectra measured at room temperature for low growth rate on substrate (solid squares) and high growth rate samples grown on off (100) towards  substrate (open circles).
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