Spontaneous formation of 3-D optical and structural lattices from two orthogonal and mutually incoherent beams of white light propagating in a photopolymerisable material

Burgess, Ian; Ponte, Matthew R.; Saravanamuttu, Kalaichelvi

doi:10.1039/b805616a

Cited by 28 publications

(34 citation statements)

References 28 publications

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“…We detail below the design rationale and fabrication of the WEL lattice, which is impossible to construct through conventional lithographic techniques . We generate its complex 3D microstructure in a single, low‐energy, room temperature process by launching and eliciting collisions between large populations of nonlinear incandescent waves in a photopolymerizable medium . We then elucidate its microstructure and optical properties through a series of studies including control experiments.…”

Section: Introductionmentioning

confidence: 99%

Waveguide Encoded Lattices (WELs): Slim Polymer Films with Panoramic Fields of View (FOV) and Multiple Imaging Functionality

Hosein

Lin

Ponte

et al. 2017

Adv Funct Materials

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When encoded with a 3D network of interconnected and pentadirectional waveguides, an otherwise passive polymer film transforms into an intelligent optical element-a waveguide encoded lattice (WEL)-that combines a panoramic field of view, infinite depth of field and powerful capacity to perform multiple imaging operations such as divergence-free transmission, focusing, and inversion. The lattices are moreover operable with coherent and incoherent light at all visible wavelengths, both individually (e.g., narrow band sources such as lasers, light-emitting diodes) and collectively (e.g., incandescent sources). This combination of properties is unprecedented in singlecomponent films and the WEL structures represent a new class of flexible, slim films that could confer advanced optical functionalities when integrated with light-based technologies (e.g., solar panels, smart phone cameras, and smart screens) and are amenable to the design and fabrication of new miniaturized optical and optoelectronic devices.

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Section: Introductionmentioning

confidence: 99%

Waveguide Encoded Lattices (WELs): Slim Polymer Films with Panoramic Fields of View (FOV) and Multiple Imaging Functionality

Hosein

Lin

Ponte

et al. 2017

Adv Funct Materials

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“…We previously reported that the photoresponse of the polymer medium allowed self-trapping of individual incandescent light beams. Studies in this photopolymer also provided insight into the intensity-dependent dynamics, interactions [11], MI [12], and spontaneously formed lattices of selftrapped white beams [13]. We now find that the photopolymer permits simultaneous, coaxial propagation of a bright core and dark sheath as a hybrid beam.…”

Section: Introductionmentioning

confidence: 61%

Coaxial Self-Trapping of White and Gray Regions of an Incandescent Field: A Bright Core with a Dark Cladding

Kasala

Saravanamuttu

2012

Physics Research International

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We report the generation of a self-trapped incoherent hybrid beam comprising a dark-sheathed bright core. The hybrid beam originates from refractive index changes in a photocrosslinkable organosiloxane, which allow simultaneous and cooperative selftrapping of a gray ring with a white core embedded in a broad incandescent beam. The core narrowed and increased in intensity while the encircling gray ring decreased in intensity until rendered very dark. This dark sheath improves light confinement in the bright core and protects it from interactions with nearby self-trapped filaments. This is the first example of a self-trapped hybrid beam, which is moreover spatially and temporally incoherent.

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“…For example, when a 1-D modulation with a periodicity commensurate with the characteristic filament width of approximately 80 μm [7] was imposed on the broad beam (Figure 2c), self-trapped filaments organized themselves into a 2-D periodic array ( Figure 2d) [7]. By extending this technique to multiple beams, we generated a diverse range of 2-D and 3-D waveguide lattices including square [7], near cubic [8], cubic [12], BCC and woodpile [11] arrangements as well as a new class of "black and bright lattices" [15]. 3-D lattices with simple cubic and woodpile arrangements are presented in Figure (a-c) and (d-f), respectively.…”

Section: Resultsmentioning

confidence: 95%

“…Details of optical assemblies employed to generate lattices are provided elsewhere [5][6][7][8][9][10][11][12]. Broad beams of incandescent white light (320-800 nm) were collimated and passed through amplitude masks before being launched into a sample cell containing a siloxane-methacrylate photopolymerizable medium [6].…”

Section: Optical Assemblymentioning

confidence: 99%

Multidirectional waveguide arrays in a planar architecture

et al. 2014

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We previously showed that large populations (>10, 000 cm -3 ) of self-induced cylindrical multimode waveguides spontaneously form when an incoherent white light field suffers modulation instability in a photopolymerizable medium. By deliberately modulating the optical field and employing multiple beams, we then generated a diverse range of waveguide lattices with 1-D, 2-D and 3-D geometries. Here, we describe the potential of this technique -optochemical organization -to provide an inexpensive, single-step, room temperature route to waveguide-inscribed planar architectures, which could serve as light-collecting, steering and focusing elements.

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Spontaneous formation of 3-D optical and structural lattices from two orthogonal and mutually incoherent beams of white light propagating in a photopolymerisable material

Cited by 28 publications

References 28 publications

Waveguide Encoded Lattices (WELs): Slim Polymer Films with Panoramic Fields of View (FOV) and Multiple Imaging Functionality

Waveguide Encoded Lattices (WELs): Slim Polymer Films with Panoramic Fields of View (FOV) and Multiple Imaging Functionality

Coaxial Self-Trapping of White and Gray Regions of an Incandescent Field: A Bright Core with a Dark Cladding

Multidirectional waveguide arrays in a planar architecture

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