Experimental study demonstrates excitation-driven wavelength shifts in semiconductor platelets under negligible heating, suggesting many-body interactions govern multimode laser operation.
Under conditions of negligible heating, optical excitation of thin, homogeneous semiconductor platelets to higher levels increases the number of longer wavelength laser modes without loss of the shorter wavelength modes. This relative shift to longer wavelength operation as a function of excitation is attributed to many-body interactions.
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Holonyak et al. (1968) studied this question.
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