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Adaptive slit beam shaping for direct laser written waveguides.

Abstract:

We demonstrate an improved method for fabricating optical waveguides in bulk materials by means of femtosecond laser writing. We use an LC spatial light modulator (SLM) to shape the beam focus by generating adaptive slit illumination in the pupil of the objective lens. A diffraction grating is applied in a strip across the SLM to simulate a slit, with the first diffracted order mapped onto the pupil plane of the objective lens while the zeroth order is blocked. This technique enables real-tim...

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Publication status:
Published

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Publisher copy:
10.1364/ol.37.000470

Authors


Salter, PS More by this author
Jesacher, A More by this author
More by this author
Institution:
University of Oxford
Department:
Oxford, MPLS, Physics
Metcalf, BJ More by this author
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Institution:
University of Oxford
Department:
Oxford, MPLS, Physics
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Journal:
Optics letters
Volume:
37
Issue:
4
Pages:
470-472
Publication date:
2012-02-05
DOI:
EISSN:
1539-4794
ISSN:
0146-9592
URN:
uuid:93f47495-5867-45bb-a449-75e36ffd9455
Source identifiers:
312941
Local pid:
pubs:312941

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