1 September 2017 Utilizing active single-mode fiber injection for speckle nulling in exoplanet characterization
Author Affiliations +
Despite recent advances in high-contrast imaging techniques, high resolution spectroscopy for characterization of exoplanet atmospheres is still limited by our ability to suppress residual starlight speckles at the planet’s location. We have demonstrated a new concept for speckle nulling by injecting directly imaged planet light into a single-mode fiber, linking a high-contrast adaptively-corrected coronagraph to a high-resolution spectrograph (diffraction-limited or not). The restrictions on the incident electric field that will couple into the single-mode fiber give the adaptive optics system additional degrees of freedom to suppress the speckle noise on top of destructive interference. We are able to achieve a starlight suppression gains that are an order of magnitude better than conventional techniques in broadband light with minimal planet throughput losses.
Conference Presentation
© (2017) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
N. Klimovich, N. Klimovich, Y. Xin, Y. Xin, D. Mawet, D. Mawet, G. Ruane, G. Ruane, J.-R. Delorme, J.-R. Delorme, W. Xuan, W. Xuan, D. Echeverri, D. Echeverri, M. Randolph, M. Randolph, J. Fucik, J. Fucik, J. K. Wallace, J. K. Wallace, J. Wang, J. Wang, G. Vasisht, G. Vasisht, R. Dekany, R. Dekany, B. Mennesson, B. Mennesson, E. Choquet, E. Choquet, E. Serabyn, E. Serabyn, } "Utilizing active single-mode fiber injection for speckle nulling in exoplanet characterization", Proc. SPIE 10400, Techniques and Instrumentation for Detection of Exoplanets VIII, 104000Y (1 September 2017); doi: 10.1117/12.2275173; https://doi.org/10.1117/12.2275173

Back to Top