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https://www.selleckchem.com/products/i-191.html The maximum possible efficiencies of solar-pumped devices are calculated using this new relation.A compact Ge11.5As24Se64.5 chalcogenide microring resonator is fabricated with an intrinsic quality factor of 3.0×105 in the telecom band. By taking advantage of the strong nonlinearity and cavity enhancement, highly efficient wavelength conversion via four-wave mixing is demonstrated using a microring resonator. Conversion efficiency of -33.7dB is obtained by using an ultra-low pump power of 63.8 µW. This work shows that Ge11.5As24Se64.5 chalcogenide microring devices are promising for quantum photonics.Learning-based computer-generated holography (CGH) provides a rapid hologram generation approach for holographic displays. Supervised training requires a large-scale dataset with target images and corresponding holograms. We propose an autoencoder-based neural network (holoencoder) for phase-only hologram generation. Physical diffraction propagation was incorporated into the autoencoder's decoding part. The holoencoder can automatically learn the latent encodings of phase-only holograms in an unsupervised manner. The proposed holoencoder was able to generate high-fidelity 4K resolution holograms in 0.15 s. The reconstruction results validate the good generalizability of the holoencoder, and the experiments show fewer speckles in the reconstructed image compared with the existing CGH algorithms.We propose a harmonically hybrid silicon mode-locked ring laser using intracavity reflectors (ICRs) to suppress supermode noise. The dynamic and noise properties of the structure are investigated using a delay differential equation model. The results of the dynamic show that a 20 GHz harmonic regime of the structure is significantly increased compared to a without intracavity-reflector structure. Additionally, the phase noise of the proposed structure (PS) is improved to about 8 dB. Furthermore, an analysis shows that timing jitter re

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