An infrared integrated optic astronomical beam combiner for stellar interferometry at 3-4 μm
Abstract
Integrated-optic, astronomical, two-beam and three-beam, interferometric combiners have been designed and fabricated for operation in the L band (3 - 4 microns) for the first time. The devices have been realized in titanium-indiffused, x-cut lithium niobate substrates, and on-chip electro-optic fringe scanning has been demonstrated. White light fringes were produced in the laboratory using the two-beam combiner integrated with an on-chip Y-splitter.
- Publication:
-
Optics Express
- Pub Date:
- October 2009
- DOI:
- arXiv:
- arXiv:0911.1106
- Bibcode:
- 2009OExpr..1718489H
- Keywords:
-
- Infrared;
- Integrated optics devices;
- Lithium niobate;
- Electro-optical devices;
- Astronomical optics;
- Optical sensing and sensors;
- Astrophysics - Instrumentation and Methods for Astrophysics
- E-Print:
- 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: http://www.opticsinfobase.org/oe. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law