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Efficient photonic reformatting of celestial light for diffraction-limited spectroscopy
David G. MacLachlan, Robert J. Harris, Itandehui Gris-Sánchez +9
The spectral resolution of a dispersive astronomical spectrograph is limited by the trade-off between throughput and the width of the entrance slit. Photonic guided-wave transition…
Development of integrated mode reformatting components for diffraction-limited spectroscopy
D. G. MacLachlan, R. J. Harris, D. Choudhury +5
We present the results of our work on developing fully integrated devices (photonic dicers) for reformatting multimode light to a diffraction limited pseudo-slit. These devices can…
Modulation-assisted tunneling in laser-fabricated photonic Wannier-Stark ladders
Sebabrata Mukherjee, Alexander Spracklen, Debaditya Choudhury +4
We observe Wannier-Stark localization in curved photonic lattices, realized using arrays of evanescently coupled optical waveguides. By correctly tuning the strength of inter-site…