Zobrazeno 1 - 10
of 5 406
pro vyhledávání: '"Kim, Yoo"'
Autor:
Kim, Yoo Jung, Fitzgerald, Michael P., Lin, Jonathan, Lozi, Julien, Vievard, Sébastien, Xin, Yinzi, Levinstein, Daniel, Jovanovic, Nemanja, Leon-Saval, Sergio, Betters, Christopher, Guyon, Olivier, Norris, Barnaby, Sallum, Steph
Spectroastrometry, which measures wavelength-dependent shifts in the center of light, is well-suited for studying objects whose morphology changes with wavelength at very high angular resolutions. Photonic lantern (PL)-fed spectrometers have potentia
Externí odkaz:
http://arxiv.org/abs/2411.02501
Autor:
Kim, Yoo Jung, Fitzgerald, Michael P., Lin, Jonathan, Xin, Yinzi, Levinstein, Daniel, Sallum, Steph, Jovanovic, Nemanja, Leon-Saval, Sergio
We investigate the potential of photonic lantern (PL) fiber fed spectrometers for two-dimensional spectroastrometry. Spectroastrometry, a technique for studying small angular scales by measuring centroid shifts as a function of wavelength, is typical
Externí odkaz:
http://arxiv.org/abs/2409.09120
Autor:
Vievard, Sébastien, Lallement, Manon, Leon-Saval, Sergio, Guyon, Olivier, Jovanovic, Nemanja, Huby, Elsa, Lacour, Sylvestre, Lozi, Julien, Deo, Vincent, Ahn, Kyohoon, Lucas, Miles, Sallum, Steph, Norris, Barnaby, Betters, Chris, Amezcua-Correa, Rodrygo, Yerolatsitis, Stephanos, Fitzgerald, Michael, Lin, Jon, Kim, Yoo Jung, Gatkine, Pradip, Kotani, Takayuki, Tamura, Motohide, Currie, Thayne, Kenchington, Harry-Dean, Martin, Guillermo, Perrin, Guy
Publikováno v:
A&A 691, A140 (2024)
Photonic lanterns are waveguide devices enabling high throughput single mode spectroscopy and high angular resolution. We aim to present the first on-sky demonstration of a photonic lantern (PL) operating in visible light, to measure its throughput a
Externí odkaz:
http://arxiv.org/abs/2409.06958
Autor:
Vievard, Sébastien, Lallement, Manon, Leon-Saval, Sergio, Guyon, Olivier, Jovanovic, Nemanja, Huby, Elsa, Lacour, Sylvestre, Lozi, Julien, Deo, Vincent, Ahn, Kyohoon, Lucas, Miles, Currie, Thayne, Sallum, Steph, Fitzgerald, Michael P., Betters, Chris, Norris, Barnaby, Amezcua-Correa, Rodrigo, Yerolatsitis, Stephanos, Lin, Jon, Kim, Yoo-Jung, Gatkine, Pradip, Kotani, Takayuki, Tamura, Motohide, Martin, Guillermo, Goldsmith, Harry-Dean Kenchington, Perrin, Guy
A Photonic Lantern (PL) is a novel device that efficiently converts a multi-mode fiber into several single-mode fibers. When coupled with an extreme adaptive optics (ExAO) system and a spectrograph, PLs enable high throughput spectroscopy at high ang
Externí odkaz:
http://arxiv.org/abs/2407.15412
Autor:
Xin, Yinzi, Echeverri, Daniel, Jovanovic, Nemanja, Mawet, Dimitri, Leon-Saval, Sergio, Amezcua-Correa, Rodrigo, Yerolatsitis, Stephanos, Fitzgerald, Michael P., Gatkine, Pradip, Kim, Yoo Jung, Lin, Jonathan, Norris, Barnaby, Ruane, Garreth, Sallum, Steph
Photonic lantern nulling (PLN) is a method for enabling the detection and characterization of close-in exoplanets by exploiting the symmetries of the ports of a mode-selective photonic lantern (MSPL) to cancel out starlight. A six-port MSPL provides
Externí odkaz:
http://arxiv.org/abs/2404.01426
Autor:
Kim, Yoo Jung, Fitzgerald, Michael P., Lin, Jonathan, Sallum, Steph, Xin, Yinzi, Jovanovic, Nemanja, Leon-Saval, Sergio
Photonic Lanterns (PLs) are tapered waveguides that gradually transition from a multi-mode fiber geometry to a bundle of single-mode fibers (SMFs). They can efficiently couple multi-mode telescope light into a multi-mode fiber entrance at the focal p
Externí odkaz:
http://arxiv.org/abs/2402.08158
Autor:
Lin, Jonathan W., Fitzgerald, Michael P., Xin, Yinzi, Kim, Yoo Jung, Guyon, Olivier, Norris, Barnaby, Betters, Christopher, Leon-Saval, Sergio, Ahn, Kyohoon, Deo, Vincent, Lozi, Julien, Vievard, Sébastien, Levinstein, Daniel, Sallum, Steph, Jovanovic, Nemanja
The direct imaging of an Earth-like exoplanet will require sub-nanometric wavefront control across large light-collecting apertures, to reject host starlight and detect the faint planetary signal. Current adaptive optics (AO) systems, which use wavef
Externí odkaz:
http://arxiv.org/abs/2312.13381
Autor:
Kim, Yoo Jung, Fitzgerald, Michael P., Lin, Jonathan, Sallum, Steph, Xin, Yinzi, Jovanovic, Nemanja, Leon-Saval, Sergio, Betters, Christopher, Gatkine, Pradip, Guyon, Olivier, Lozi, Julien, Mawet, Dimitri, Norris, Barnaby, Vievard, Sébastien
Photonic lanterns (PLs) are tapered waveguides that gradually transition from a multi-mode fiber geometry to a bundle of single-mode fibers. In astronomical applications, PLs can efficiently couple multi-mode telescope light into a multi-mode fiber e
Externí odkaz:
http://arxiv.org/abs/2312.00221
Focal-plane wavefront sensing with photonic lanterns II: numerical characterization and optimization
Autor:
Lin, Jonathan, Fitzgerald, Michael P., Xin, Yinzi, Kim, Yoo Jung, Guyon, Olivier, Leon-Saval, Sergio, Norris, Barnaby, Jovanovic, Nemanja
We present numerical characterizations of the wavefront sensing performance for few-mode photonic lantern wavefront sensors (PLWFSs). These characterizations include calculations of throughput, control space, sensor linearity, and an estimate of maxi
Externí odkaz:
http://arxiv.org/abs/2311.01622
Autor:
Jovanovic, Nemanja, Xin, Yinzi, Fitzgerald, Michael P., Guyon, Olivier, Tuthill, Peter, Norris, Barnaby, Gatkine, Pradip, Sercel, Greg, Soda, Svarun, Kim, Yoo Jung, Lin, Jonathan, Leon-Saval, Sergio, Amezcua-Correa, Rodrigo, Yerolatsitis, Stephanos, Lozi, Julien, Vievard, Sebastien, Betters, Chris, Sallum, Steph, Levinstein, Daniel, Mawet, Dimitri, Jewell, Jeffrey, Wallace, J. Kent, Cvetojevic, Nick
Astrophysical research into exoplanets has delivered thousands of confirmed planets orbiting distant stars. These planets span a wide ranges of size and composition, with diversity also being the hallmark of system configurations, the great majority
Externí odkaz:
http://arxiv.org/abs/2309.08732