منابع مشابه
Visible wavelength astro-comb.
We demonstrate a tunable laser frequency comb operating near 420 nm with mode spacing of 20-50 GHz, usable bandwidth of 15 nm and output power per line of ~20 nW. Using the TRES spectrograph at the Fred Lawrence Whipple Observatory, we characterize this system to an accuracy below 1m/s, suitable for calibrating high-resolution astrophysical spectrographs used, e.g., in exoplanet studies.
متن کاملOperation of a broadband visible-wavelength astro-comb with a high-resolution astrophysical spectrograph
Harvard Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, Massachusetts 02138, USA Department of Physics, Harvard University, 60 Garden Street, Cambridge, Massachusetts 02138, USA Department of EECS and RLE, Massachusetts Institute of Technology, Massachusetts Avenue, Massachusetts 02139, USA Idesta Quantum Electronics LLC, 56 Sparta Ave., Newton, New Jersey 07860, USA Center fo...
متن کاملIn-Situ Determination of Astro-Comb Calibrator Lines to Better
High precision wavelength calibrators for high-resolution astrophysical spectrographs will be key components of new precision radial velocity (RV) observations including the search for Earth-like exoplanets and direct observation of cosmological deceleration. The astro-comb, a novel high-precision calibrator, is a combination of an octave-spanning femtosecond laser frequency comb and a Fabry-Pé...
متن کاملConjugate Fabry-Perot cavity pair for improved astro-comb accuracy.
We propose a new astro-comb mode-filtering scheme composed of two Fabry-Perot cavities (coined "conjugate Fabry-Perot cavity pair"). Simulations indicate that this new filtering scheme makes the accuracy of astro-comb spectral lines more robust against systematic errors induced by nonlinear processes associated with power-amplifying and spectral-broadening optical fibers.
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ژورنال
عنوان ژورنال: Optics Express
سال: 2010
ISSN: 1094-4087
DOI: 10.1364/oe.18.019175