Staff profile

Conference Paper

• 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

Journal Article

• Zhang, Z., Bharmal, N., Morris, T., & Liang, Y. (in press). Laboratory quantification of a plenoptic wavefront sensor with extended objects. Monthly Notices of the Royal Astronomical Society, 497(4), https://doi.org/10.1093/mnras/staa2269
• Dubost, N., Bharmal, N. A., Dubbeldam, M., & Myers, R. M. (2022). Concept validation of a high dynamic range point-diffraction interferometer for wavefront sensing in adaptive optics. Applied Optics, 61(14), 4160-4167. https://doi.org/10.1364/ao.439569
• 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
• Zhang, Z., Morris, T., Bharmal, N., & Liang, Y. (2021). Global tip-tilt and high-order aberration correction with plenoptic wavefront sensors in closed-loop AO systems. Applied Optics, 60(14), 4208 - 4216. https://doi.org/10.1364/ao.420729
• Hottinger, P., Harris, R. J., Crass, J., Dietrich, P., Blaicher, M., Bechter, A., …Quirrenbach, A. (2021). On-sky results for the integrated microlens ring tip-tilt sensor. Journal of the Optical Society of America B, 38(9), https://doi.org/10.1364/josab.421459
• Sinquin, B., Prengere, L., Kulcsár, C., Raynaud, H., Gendron, E., Osborn, J., …Cohen, M. (2020). On-sky results for adaptive optics control with data-driven models on low-order modes. Monthly Notices of the Royal Astronomical Society, 498(3), 3228-3240. https://doi.org/10.1093/mnras/staa2562
• Cantalloube, F., Farley, O., Milli, J., Bharmal, N., Brandner, W., Correia, C., …Vigan, A. (2020). Wind-driven halo in high-contrast images. Astronomy & Astrophysics, 638, Article A98. https://doi.org/10.1051/0004-6361/201937397
• Yang, H., Gonzalez, C., Bharmal, N., & de Cos, F. (2019). Projected Pupil Plane Pattern (PPPP) with artificial Neural Networks. Monthly Notices of the Royal Astronomical Society, 487(1), 1480-1487. https://doi.org/10.1093/mnras/stz1362
• Beltramo-Martin, O., Bharmal, N. A., & Correia, C. (2019). PEPITO: atmospheric Profiling from short-Exposure focal Plane Images in seeing-limiTed mOde. Monthly Notices of the Royal Astronomical Society, 486(2), 2032-2041. https://doi.org/10.1093/mnras/stz979
• Yang, H., Bharmal, N., Myers, R., & Younger, E. (2019). Laboratory demonstration of an alternative laser guide stars wavefront sensing technique—projected pupil plane pattern. Journal of Astronomical Telescopes, Instruments, and Systems, 5(2), Article 029002. https://doi.org/10.1117/1.jatis.5.2.029002
• Cantalloube, F., Por, E., Dohlen, K., Sauvage, J., Vigan, A., Kasper, M., …Fusco, T. (2018). Origin of the asymmetry of the wind driven halo observed in high-contrast images. Astronomy & Astrophysics, 620, Article L10. https://doi.org/10.1051/0004-6361/201834311
• Yang, H., Bharmal, N. A., & Myers, R. M. (2018). Projected Pupil Plane Pattern: an alternative LGS wavefront sensing technique. Monthly Notices of the Royal Astronomical Society, 477(4), 4443-4453. https://doi.org/10.1093/mnras/sty926
• Dubost, N., Bharmal, N., & Myers, R. M. (2018). Calibration of quasi-static aberrations in high-contrast astronomical adaptive optics with a pupil-modulated point-diffraction interferometer. Optics Express, 26(9), 11068-11083. https://doi.org/10.1364/oe.26.011068
• Bharmal, N., & Reeves, A. (2016). Estimating stochastic noise using in-situ measurements from a linear wavefront slope sensor. Optics Letters, 41(2), 428-431. https://doi.org/10.1364/ol.41.000428