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Ultrafast laser inscription : an enabling technology for astrophotonics.

Thomson, R.R. and Kar, A.K. and Allington-Smith, J.R. (2009) 'Ultrafast laser inscription : an enabling technology for astrophotonics.', Optics express., 17 (3). pp. 1963-1969.


The application of photonics to astronomy offers major advantages in the area of highly-multiplexed spectroscopy, especially when applied to extremely large telescopes. These include the suppression of the near-infrared night-sky spectrum [J. Bland-Hawthorn et al, Opt. Express 12, 5902 (2004), S. G. Leon-Saval et al, Opt. Lett. 30, 2545 (2005)] and the miniaturisation of spectrographs so that they may integrated into the light-path of individual spatial samples [J. Bland-Hawthorn et al, Proc SPIE 6269, 62690N (2006)]. Efficient collection of light from the telescope requires multimode optical fibres and three-dimensional photonic devices. We propose ultrafast laser inscription (ULI) [R. R. Thomson et al, Opt. Express 15, 11691 (2007)] as the best technology to fabricate 3D photonic devices for astrophotonic applications.

Item Type:Article
Keywords:Femtosecond laser, Wave-guides, OH-suppression, Photosensitive glass, Written, Fabrication, Fibers, Pulses.
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Publisher statement:© 2009 The Optical Society. This paper was published in Optics express and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.
Record Created:28 Nov 2012 15:50
Last Modified:01 Aug 2014 12:18

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