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Deep subsurface waveguides with circular cross section produced by femtosecond laser writing
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10.1063/1.2761298
/content/aip/journal/apl/91/5/10.1063/1.2761298
http://aip.metastore.ingenta.com/content/aip/journal/apl/91/5/10.1063/1.2761298
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(Color online) Intensity distribution in the plane ( is the propagation axis) of a laser beam focused at inside fused silica, calculated for , 0.2, and 0.6. The plot shows the evolution of , , , and as a function of NA computed under the same conditions for , , and .

Image of FIG. 2.
FIG. 2.

(Color online) [(a)–(d) and (i)–(l)] Images of the guided modes at at the exit face of waveguides produced at the indicated writing depths . The slit width and pulse energy used was and for (a)–(d) and and for (i)–(l). [(e)–(h) and (m)–(p)] Transillumination images of structures produced at the same depths with slit ([(e)–(h)] and ) and without slit . (q) Aspect ratio of the waveguides/structures produced with a slit ( and ) and without a slit . The dotted line indicates the ideal aspect ratio of 1. (r) Propagation losses at as a function of depth ( and ).

Image of FIG. 3.
FIG. 3.

(Color online) (a) Gray and (b) pseudocolor scale transillumination images of a waveguide written at and and a slit width of . In (b) the contrast of the image has been enhanced by subtracting the level of the homogenous background of the image. (c) Calculation of the intensity distribution produced by the writing laser in the focal region for the corresponding slit width. The distribution has been obtained from the hybrid model of Gaussian beam propagation and slit aperture imaging and by then applying a scaling to account for the nonlinear absorption of the laser light in fused silica. (d) Pseudocolor scale image of the guided mode at 633 corresponding to images (a) and (b).

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/content/aip/journal/apl/91/5/10.1063/1.2761298
2007-07-31
2014-04-18
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Deep subsurface waveguides with circular cross section produced by femtosecond laser writing
http://aip.metastore.ingenta.com/content/aip/journal/apl/91/5/10.1063/1.2761298
10.1063/1.2761298
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