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Lasing spectra of the multiquantum well laser in different injection currents under cw operation at room temperature (23 °C).
Schematic diagram of the refractive index in typical , , and laser structures.
Effective refractive index of fundamental and first order lateral modes for different ridge width.
Room temperature PL spectra of the laser sample (a) as-grown, and after RTA at 780 °C for 60s, (b) without surface encapsulation, (c) with surface covered by , and (d) top InGaAs contact and InP cladding layers etched away and then covered by the .
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