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1. Snapshot phase-shifting diffraction phase microscope

   https://doi.org/10.1364/OL.394033  

   Tian, Xiaobo; Liang, Rongguang (June 2020, Optics Letters)

   We propose a novel and simple snapshot phase-shifting diffraction phase microscope with a polarization grating and spatial phase-shifting technology. Polarization grating separates the incident beam into left and right circular polarization beams, one of which is used as the reference beam after passing through a pinhole. Four phase-shifted interferograms can be captured simultaneously from the polarization camera to reconstruct the high spatial resolution phase map. The principle is presented in this Letter, and the performance of the proposed system is demonstrated experimentally. Due to the near-common-path configuration and snapshot feature, the proposed system provides a feasible way for real-time quantitative phase measurement with minimal sensitivity to vibration and thermal disturbance. 

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2. A Multi-Phase Injection-Locked 8-Phase 17 GHz Clock Generator with 6b Phase Rotation for Multi-Phase Wireline Receivers

   https://doi.org/10.1109/ESSERC62670.2024.10719579  

   Zhou, Bob; Nikolić, Borivoje (September 2024, IEEE)

   A high frequency multi-phase clock generator circuit with a 6b phase rotator is presented for multi-phase wireline receivers. Multi-phase injection is used to efficiently generate and rotate 8 clock phases. Unlike prior rotator-based work, this work does not use time modulation, reducing the resulting deterministic jitter. A model is presented to study the nonlinearity introduced by the technique. The proposed 17 GHz circuit was implemented in the Intel 16 process and consumes 33 mW. The measured RMS jitter is $$\mathbf{9 8} \mathrm{fs}$$, and the measured DNLpp and INLpp are 1.26 and 4.05 LSB respectively. 

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3. Low-coherence snapshot phase-shifting diffraction phase microscope

   https://doi.org/10.1016/j.optlaseng.2023.107618  

   Sun, Yuanyuan; Wang, Yihan; Wang, Daodang; Pau, Stanley; Liang, Rongguang (August 2023, Optics and Lasers in Engineering)

   We proposed a Wollaston-prism-based snapshot phase-shifting diffraction phase microscope (WP-SPDPM) for low-coherence snapshot quantitative phase imaging and videography. Wollaston prism separates two orthogonally linearly polarized beams with high degrees of polarization at a sufficiently small separation angle; one of the beams passing through a pinhole serves as the reference beam. Four phase-shifted interferograms are simultaneously acquired with a polarization camera to accurately retrieve a high spatial resolution phase map. The system is nearly common-path in configuration and can achieve a large slope range and high accuracy. In addition to the ability to resist environmental noise, the WP-SPDPM is suitable for phase measurement using low-coherence light. The accuracy and large measurable slope range of the proposed system is validated and compared experimentally with a commercial profilometer. We believe WP-SPDPM is a powerful tool for the accurate and robust quantitative phase measurement and has a significant potential of the real-time phase imaging. 

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4. Frame Phase-Retrievability and Exact Phase-Retrievable Frames

   https://doi.org/10.1007/s00041-019-09696-8  

   Han, Deguang; Juste, Ted; Li, Youfa; Sun, Wenchang (December 2019, Journal of Fourier Analysis and Applications)
5. Microstructural phase coexistence kinetics near the polymorphic phase boundary

   https://doi.org/10.1016/j.actamat.2020.116579  

   Torres-Matheus, Oscar A.; García, R. Edwin; Bishop, Catherine M. (March 2021, Acta Materialia)