Photorefractive effect on all optical polling of glass

Balakirev, M. K.; Smirnov, V.; Vostrikova, L. I.

doi:10.1088/1464-4258/5/6/007

Cited by 3 publications

(2 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In order to incorporate second-order nonlinearity into silica-based fiber structures, most existing methods rely on various poling techniques such as optical poling [2,3], electrical poling [4,5], UV poling [6,7], and corona poling [8,9]. A major drawback of these methods is that poling-induced second-order nonlinearity is thermodynamically unstable and tends to decay over time.…”

Section: Introductionmentioning

confidence: 99%

Fabrication and characterization of periodically patterned silica fiber structures for enhanced second-order nonlinearity

et al. 2015

View full text Add to dashboard Cite

We develop and characterize a UV ablation technique that can be used to pattern soft materials such as polymers and nonlinear molecules self-assembled over silica microstructures. Using this method, we fabricate a spatially periodic coating of nonlinear film over a thin silica fiber taper for second harmonic generation (SHG). Experimentally, we find that the second harmonic signal produced by the taper with periodic nonlinear coating is 15 times stronger than the same taper with uniform nonlinear coating, which suggests that quasi-phase-matching is at least partially achieved in the patterned nonlinear silica taper. The same technique can also be used to spatially pattern other types of functional nanomaterials over silica microstructures with curved surfaces, as demonstrated by deposition of gold nanoparticles in patterned structures.

show abstract

Section: Introductionmentioning

confidence: 99%

Fabrication and characterization of periodically patterned silica fiber structures for enhanced second-order nonlinearity

et al. 2015

View full text Add to dashboard Cite

show abstract

“…Consequently, until now it has been very difficult to use silica fiber to realize important second-order processes including second harmonic generation (SHG) and optical parametric oscillation (OPO). In order to incorporate second-order nonlinearity into silica-based devices, most of the current approaches utilize external field (i.e., poling) to generate a preferred direction in silica glass [4][5][6][7][8] . The poled silica glass, however, is thermodynamically unstable and the resultant second order nonlinearity tends to decay over time 9 .…”

Section: Introductionmentioning

confidence: 99%

Self-assembled nanomaterials for nonlinear fiber optics and tunable plasmonics

et al. 2013

View full text Add to dashboard Cite

As an amorphous material with full inversion symmetry, silica-based microstructures cannot possess significant secondorder nonlinearity. We recently developed a method that can potentially overcome this deficiency by coating a silica fiber taper with layers of radially aligned nonlinear molecules. The coating process can be accomplished through layerby-layer self-assembly, where the alignment of the nonlinear molecules is maintained through electrostatic interaction. As a result, the nonlinear fiber structures are thermodynamically stable and can generate significant second-order nonlinear responses despite their full rotational symmetry. This prediction has been experimentally confirmed through SHG measurements. To further enhance the overall second-order nonlinearity, we have developed an UV-ablation-based approach that can generate second-order nonlinearity that is spatially periodic along the fiber taper. Our preliminary experiments suggest that SHG intensity can be enhanced by such quasi-phase-matching configurations.We can also use the self-assembly approach to construct tunable plasmonic systems. As a proof-of-concept study, we assembled swellable polymer films over a planar Au substrate through layer-by-layer assembly and covered the swellable polymer with a monolayer of quantum dots. After immersing the swellable plasmonic structure in solution and adjusting its pH value, we used a fluorescence lifetime based approach to demonstrate that the thickness of the swellable polymers can be modified by almost 400%. The fluorescence lifetime measurements also confirmed that the plasmonic resonance can be significantly modified by the swellable polymers.

show abstract

Demonstration of a cylindrically symmetric second-order nonlinear fiber with self-assembled organic surface layers

Daengngam¹,

Hofmann²,

Liu³

et al. 2011

Opt. Express

View full text Add to dashboard Cite

Abstract:We report the fabrication and characterization of a cylindrically symmetric fiber structure that possesses significant and thermodynamically stable second-order nonlinearity. Such fiber structure is produced through nanoscale self-assembly of nonlinear molecules on a silica fiber taper and possesses full rotational symmetry. Despite its highly symmetric configuration, we observed significant second harmonic generation (SHG) and obtained good agreement between experimental results and theoretical predictions. ©2011 Optical Society of America

show abstract

Photorefractive effect on all optical polling of glass

Cited by 3 publications

References 8 publications

Fabrication and characterization of periodically patterned silica fiber structures for enhanced second-order nonlinearity

Fabrication and characterization of periodically patterned silica fiber structures for enhanced second-order nonlinearity

Self-assembled nanomaterials for nonlinear fiber optics and tunable plasmonics

Demonstration of a cylindrically symmetric second-order nonlinear fiber with self-assembled organic surface layers

Contact Info

Product

Resources

About