Figure 4 | Scientific Reports

Figure 4

From: Directional emission of white light via selective amplification of photon recycling and Bayesian optimization of multi-layer thin films

Figure 4

Color point deviation \(d^\alpha\) over power \(P^\alpha\) after joint (left, TS-EMO), hierarchical (middle, TS-SOO) and local (right, Downhill simplex) optimization for \(\alpha =25^\circ\). The horizontal black lines denote the color point deviation of 0.005 points, where \(W\left( 0.005 \right) = 0.99\) holds. The vertical black lines denote the power of the reference design without multi-layer thin film. For each sample in these plots, the color map reflects the objective function values obtained by Eq. (2).

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