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Fig. 3 | Nanoscale Research Letters

Fig. 3

From: Demonstration of High-Power and Stable Single-Mode in a Quantum Cascade Laser Using Buried Sampled Grating

Fig. 3

a The diagram of the sampling grating structure, the vertical dotted line represents the cleaved facet position, P is the sampling period, and u is the length of the grating region in one sampling period. b The blue line is the calculated transmission spectrum of the designed sampled grating, and the red line is the measured electroluminescence spectrum of the fabricated wafer

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