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Photonic crystal spatial filters fabricated by femtosecond pulsed Bessel beam

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1908.028421.pdf (800,0Kb)
 
10.1364/OL.44.004969
 
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hdl:2117/176402

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Gailevicius, Darius
Purlys, Vytautas
Staliunas, KestutisMés informacióMés informacióMés informació
Document typeArticle
Defense date2019-10-15
Rights accessOpen Access
Attribution-NonCommercial-NoDerivs 3.0 Spain
Except where otherwise noted, content on this work is licensed under a Creative Commons license : Attribution-NonCommercial-NoDerivs 3.0 Spain
Abstract
We propose and experimentally demonstrate femtosecond direct laser writing with Bessel beams for the fabrication of photonic crystals with spatial filtering functionality. Such filters are mechanically stable, of small (of order of millimeter) size, do not require direct access to the far-field domain, and therefore are excellent candidates for intracavity spatial filtering applications in mini- and micro-lasers. The technique allows the fabrication of efficient photonic crystal spatial filters in glass, with a narrow angle (~1 degree) nearly 100%-transmission pass-band between broad angle (up to 10 degrees) nearly 0%-transmission angular stop-bands. We show, that this technique can not only significantly shorten the fabrication time, but also allows the fabrication of large-scale defect-free photonic crystal spatial filters with a wide filtering band.
CitationGailevicius, D.; Purlys, V.; Staliunas, K. Photonic crystal spatial filters fabricated by femtosecond pulsed Bessel beam. "Optics letters", 15 Octubre 2019, vol. 44, núm. 20, p. 4969-4972. 
URIhttp://hdl.handle.net/2117/176402
DOI10.1364/OL.44.004969
ISSN0146-9592
Publisher versionhttps://www.osapublishing.org/ol/abstract.cfm?uri=ol-44-20-4969
Other identifiershttps://arxiv.org/abs/1908.02842
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