Staff profile

Conference Paper

• Bharmal, N. A., Bramall, D., Calcines Rosario, A. Z., Morris, T. J., Schmoll, J., & Staykov, L. (2022, December). WIVERN: a laboratory experiment for testing novel laser-based wavefront sensing techniques. Presented at Adaptive Optics Systems VIII

Journal Article

• Zhang, Z., Bharmal, N., Morris, T., & Liang, Y. (online). 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
• Gonzalez-Gutierrez, C., Bharmal, N. A., Rodriguez-Muro, J., Buendia-Roca, A., Yang, H., Fitzpatrick, L. W., Morris, T. J., & de Cos Juez, F. J. (2024). Laboratory demonstration of single-camera PPPP wavefront sensing using neural networks. International Journal of Optomechatronics, 18(1), Article 2386985. https://doi.org/10.1080/15599612.2024.2386985
• 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., Gendron, É., Buey, J.-T. M., Chemla, F., Cohen, M., Bharmal, N. A., Bardou, L. F., Staykov, L., Osborn, J., Morris, T. J., Pedretti, E., Dinkelaker, A. N., Madhav, K. V., & 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.-I., Blaicher, M., Bechter, A., Sands, B., Morris, T., Basden, A. G., Bharmal, N. A., Heidt, J., Anagnos, T., Neureuther, P. L., Glück, M., Power, J., Pott, J.-U., Koos, C., Sawodny, O., & 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.-F., Gendron, E., Osborn, J., Basden, A., Conan, J.-M., Bharmal, N., Bardou, L., Staykov, L., Morris, T., Buey, T., Chemla, F., & 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., Dohlen, K., Henning, T., Osborn, J., Por, E., Suárez Valles, M., & 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.-F., Vigan, A., Kasper, M., Bharmal, N., Henning, T., Brandner, W., Milli, J., Correia, C., & 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