Astrophotonics: a new era for astronomical instruments

Details Astrophotonics: a new era for astronomical instruments Astrophotonics: a new era for astronomical instruments

2009-02-03

arxiv.org/abs/0902.0415v1

Opt.Express 17:1880,2009

Astronomy and Astrophysics

Astrophysics

Instrumentation and Methods for Astrophysics

5 pages, Editorial for the Focus Issue on Astrophotonics (Optics Express); all 12 papers are free to air at http://www.optic

Scientific paper

10.1364/OE.17.001880

Astrophotonics lies at the interface of astronomy and photonics. This burgeoning field -- now formally recognized by the optics community -- has emerged over the past decade in response to the increasing demands of astronomical instrumentation. Early successes include: (i) planar waveguides to combine signals from widely spaced telescopes in stellar interferometry; (ii) frequency combs for ultra-high precision spectroscopy to detect planets around nearby stars; (iii) ultra-broadband fibre Bragg gratings to suppress unwanted background; (iv) photonic lanterns that allow single-mode behaviour within a multimode fibre; (v) planar waveguides to miniaturize astronomical spectrographs; (vi) large mode area fibres to generate artificial stars in the upper atmosphere for adaptive optics correction; (vii) liquid crystal polymers in optical vortex coronographs and adaptive optics systems. Astrophotonics, a field that has already created new photonic capabilities, is now extending its reach down to the Rayleigh scattering limit at ultraviolet wavelengths, and out to mid infrared wavelengths beyond 2500nm.

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