WIVERN: a laboratory experiment for testing novel laser-based wavefront sensing techniques (2022)
Conference Proceeding
Bharmal, N. A., Bramall, D., Calcines Rosario, A. Z., Morris, T. J., Schmoll, J., & Staykov, L. (2022). WIVERN: a laboratory experiment for testing novel laser-based wavefront sensing techniques. In L. Schreiber, D. Schmidt, & E. Vernet (Eds.), Proceedings Volume 12185, Adaptive Optics Systems VIII; SPIE Astronomical Telescopes + Instrumentation. https://doi.org/10.1117/12.2629888

WIVERN is a testbed for laboratory experiments in laser-based wavefront sensing. It emulates laser uplink from a 4m telescope with 1.6 arcsec seeing and laser back-scattering from up to 20 km. Currently there are three current wavefront sensing capab... Read More about WIVERN: a laboratory experiment for testing novel laser-based wavefront sensing techniques.

First stellar photons for an integrated optics discrete beam combiner at the William Herschel Telescope (2021)
Journal Article
Nayak, A. S., Labadie, L., Sharma, T. K., Piacentini, S., Corrielli, G., Osellame, R., …Roth, M. M. (2021). First stellar photons for an integrated optics discrete beam combiner at the William Herschel Telescope. Applied Optics, 60(19), D129-D142. https://doi.org/10.1364/ao.423881

We present the first on-sky results of a four-telescope integrated optics discrete beam combiner (DBC) tested at the 4.2 m William Herschel Telescope. The device consists of a four-input pupil remapper followed by a DBC and a 23-output reformatter. T... Read More about First stellar photons for an integrated optics discrete beam combiner at the William Herschel Telescope.