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Schematic drawing of the double heterostructure and the experimental geometry.
Stimulated emission from a 280 wide platelet at . The two peaks at 336.3 and correspond to the emission from the cladding layer and buffer layer , respectively.
Stimulated emission from a wide platelet at .
The change of emission intensity as a function of the excitation power at and room temperature corresponding to the data in Figs. 2 and 3.
Multimode laser action, from the same wide platelet used in Fig. 3, at room temperature with well resolved Fabry-Pérot modes, . The spectra are vertically displaced for clarity.
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