Creation of microchannels in a photosensitive As_2S_3 slab waveguide

Hô, Nicolas; Laniel, Jacques M.; Vallée, Réal; Villeneuve, A.

doi:10.1364/josab.19.000875

Cited by 5 publications

(3 citation statements)

References 17 publications

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“…11 The thresholds for the onset of the phenomenon is of course different for different pulse width. In a recent report, 18 femtosecond pulses were used to create waveguides in bulk As 2 S 3 , but they could not reproduce the experiment in CW, even at very high power.…”

Section: Discussionmentioning

confidence: 99%

“…In this paper, we report on the creation of microchannels in a As 2 S 3 slab waveguide, where light becomes so tightly confined that the initial self-written waveguide eventually collapses into a channel which is substantially narrower than the incident beam, even reaching a diameter of 1 µm. 11 Numerical simulations based on the nonlinear Schrödinger equation were performed to provide a better insight into this phenomenon. Section 2 describes the experimental setup used.…”

Section: Introductionmentioning

confidence: 99%

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Creation of micro-channels in a photosensitive As 2 S 3 slab waveguide

et al. 2003

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The creation of microchannels in a photosensitive material, the arsenic trisulphide (As 2 S 3 ), is reported. It is shown that microchannels are created through the process of self-writing and are very sensitive to the photosensitivity of the material, the quality of the incident wavefront and the light intensity. The very large photosensitivity of As 2 S 3 allows for the self-written waveguide to become much smaller than the incident beam. It can indeed be as small as 1 µm wide. We present a numerical analysis based on the nonlinear Schrödinger equation that accounts well for the diversity of the microchannels experimentally observed. It is also shown that the microchannels can actually guide light efficiently.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Creation of micro-channels in a photosensitive As 2 S 3 slab waveguide

et al. 2003

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“…Previously self-written channels in planar glass have been created in ion-implanted Bi 4 Ge 3 O 12 , 8 germanosilicate glass, 1 and As 2 S 3 chalcogenide glass. 9,10 In bulk geometry experiments have been carried out in gallium lanthanum sulfide chalcogenide glass 3 and in Nd-doped Bk7 glass. 11 So far only tapers and channels have been written experimentally in glass, although further progress has been made in photopolymers, largely because photopolymers exhibit reproducible photosensitivity that occurs rapidly (seconds) and large index changes can be obtained (⌬n Ͻ 0.03).…”

Section: Introductionmentioning

confidence: 99%