Lateral Modes in Quantum Cascade Lasers
نویسندگان
چکیده
Abstract: We will examine the waveguide mode losses in ridge-guided quantum cascade lasers. Our analysis illustrates how the low-loss mode for broad-ridge quantum cascade lasers (QCLs) can be a higher-order lateral waveguide mode that maximizes the feedback from the sloped ridge-wall regions. The results are in excellent agreement with the nearand far-field data taken on broad-ridge-guided quantum cascade lasers processed with sloped ridge walls.
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