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4 papers · 2 filters
Solving ptychography with a convex relaxation
Roarke Horstmeyer, Richard Y. Chen, Xiaoze Ou +3
Ptychography is a powerful computational imaging technique that transforms a collection of low-resolution images into a high-resolution sample reconstruction. Unfortunately, algori…
Subwavelength-thick Lenses with High Numerical Apertures and Large Efficiency Based on High Contrast Transmitarrays
Amir Arbabi, Yu Horie, Alexander J. Ball +2
We report subwavelength-thick, polarization insensitive micro-lenses operating at telecom wavelength with focal spots as small as 0.57 wavelengths and measured focusing efficiency…
Dual-microcavity narrow-linewidth Brillouin laser
William Loh, Adam Green, Frederick Baynes +6
Ultralow noise, yet tunable lasers are a revolutionary tool in precision spectroscopy, displacement measurements at the standard quantum limit, and the development of advanced opti…
Wide-field, high-resolution Fourier ptychographic microscopy
Guoan Zheng, Roarke Horstmeyer, Changhuei Yang
In this article, we report an imaging method, termed Fourier ptychographic microscopy (FPM), which iteratively stitches together a number of variably illuminated, low-resolution in…