Third-harmonic generation in slow-light chalcogenide glass photonic crystal waveguides
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We demonstrate third-harmonic generation (THG) in a dispersion-engineered slow-light photonic crystal waveguide fabricated in AMTIR-1 chalcogenide glass. Owing to the relatively low loss and low dispersion in the slow-light (c/30) regime, combined with the high nonlinear figure of merit of the material (similar to 2), we obtain a relatively large conversion efficiency (1.4 x 10(-8)/W-2), which is 30x higher than in comparable silicon waveguides, and observe a uniform visible light pattern along the waveguide. These results widen the number of applications underpinned by THG in slow-light platforms, such as the direct observation of the spatial evolution of the propagating mode. (C) 2011 Optical Society of America
Monat , C , Spurny , M , Grillet , C , O'Faolain , L , Krauss , T F , Eggleton , B J , Bulla , D , Madden , S & Luther-Davies , B 2011 , ' Third-harmonic generation in slow-light chalcogenide glass photonic crystal waveguides ' Optics Letters , vol 36 , no. 15 , pp. 2818-2820 . , 10.1364/OL.36.002818
© 2011 Optical Society of America. This paper was published in Optics Letters and is made available as an electronic reprint with the permission of OSA. The paper can be found at http://www.opticsinfobase.org
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