Dual polarization split lenses

Cofré, Aarón; Vargas, Asticio; Torres-Ruiz, F. A.; Campos, Juan; Lizana, Ángel; Sánchez-López, Marı́a del Mar

doi:10.1364/oe.25.023773

Cited by 9 publications

(6 citation statements)

References 34 publications

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“…The two independent channels are used to produce two basis holographic vector components with an orthogonal polarization direction for their later combination. The phase-only LCOS SLMs are sensitive to the polarization state of the input light due to the operating principle of liquid crystal modules [32][33][34][35][36]. This means that the polarization state of input light needs to be parallel to the alignment direction of liquid crystal molecules for phase-only modulation.…”

Section: The Encoding Principle Of the Proposed Methodsmentioning

confidence: 99%

Dynamic Phase and Polarization Modulation Using Two-Beam Parallel Coding for Optical Storage in Transparent Materials

Hong

Chu

2022

Sensors

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In this paper, we propose and experimentally demonstrate a parallel coding and two-beam combining approach for the simultaneous implementation of dynamically generating holographic patterns at their arbitrary linear polarization states. Two orthogonal input beams are parallelly and independently encoded with the same target image information but there is different amplitude information by using two-phase computer-generated holograms (CGH) on two Liquid-Crystal-on-Silicon-Spatial-Light Modulators (LCOS SLMs). Two modulated beams are then considered as two polarization components and are spatially superposed to form the target polarization state. The final linear vector beam is created by the spatial superposition of the two base beams, capable of controlling the vector angle through the phase depth of the phase-only CGHs. Meanwhile, the combined holographic patterns can be freely encoded by the holograms of two vector components. Thus, this allows us to tailor the optical fields endowed with arbitrary holographic patterns and the linear polarization states at the same time. This method provides a more promising approach for laser data writing generation systems in the next-generation optical data storage technology in transparent materials.

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Section: The Encoding Principle Of the Proposed Methodsmentioning

confidence: 99%

Dynamic Phase and Polarization Modulation Using Two-Beam Parallel Coding for Optical Storage in Transparent Materials

Hong

Chu

2022

Sensors

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“…Some authors have shown the interest of generalizing the Billet-lens scheme to N -split lens sectors 29 , 32 , 33 . The coordinate system chosen to split the lens, strongly influences the light-dots distribution that can be created at the focal plane by using split schemes.…”

Section: Theoretical Backgroundmentioning

confidence: 99%

Generation of reconfigurable optical traps for microparticles spatial manipulation through dynamic split lens inspired light structures

Lizana

Zhang

Turpin

et al. 2018

Sci Rep

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We present an experimental method, based on the use of dynamic split-lens configurations, useful for the trapping and spatial control of microparticles through the photophoretic force. In particular, the concept of split-lens configurations is exploited to experimentally create customized and reconfigurable three-dimensional light structures, in which carbon coated glass microspheres, with sizes in a range of 63–75 μm, can be captured. The generation of light spatial structures is performed by properly addressing phase distributions corresponding to different split-lens configurations onto a spatial light modulator (SLM). The use of an SLM allows a dynamic variation of the light structures geometry just by modifying few control parameters of easy physical interpretation. We provide some examples in video format of particle trapping processes. What is more, we also perform further spatial manipulation, by controlling the spatial position of the particles in the axial direction, demonstrating the generation of reconfigurable three-dimensional photophoretic traps for microscopic manipulation of absorbing particles.

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“…PA-LCoS can be found in many optics and photonics applications such as in diffractive optics [6], optical storage [7,8], optical metrology [9], reconfigurable interconnects [10,11], wavefront sensing of structured light beams [12], holographic optical traps [13], or quantum optical computing [14]. In recent years, a wide interest has arisen dealing with the generation and detection of unconventional polarization structured wavefronts [15,16] in which PA-LCoS devices play a central role [17,18].…”

Section: Introductionmentioning

confidence: 99%

Combining average molecular tilt and flicker for management of depolarized light in parallel-aligned liquid crystal devices for broadband and wide-angle illumination

et al. 2019

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We demonstrate a complete semiphysical and analytical model describing the angular and wavelength dependencies not only of retardance, but also its flicker, in parallel aligned liquid crystal (PA-LC) devices. It relies on the fitting of the molecules' equivalent tilt angle as a function of applied voltage. The wide range of calculations it offers without requiring extensive characterization makes the model unique. We focus on PA-LCoS application as a polarization state generator across the visible spectrum and for a wide range of incidence angles. This approach offers novel capabilities for managing arbitrary states of both full and partial polarization. To highlight the richness of situations with PA-LCoS devices, we provide results for two different digital addressing sequences producing different levels of flicker.

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Dual polarization split lenses

Cited by 9 publications

References 34 publications

Dynamic Phase and Polarization Modulation Using Two-Beam Parallel Coding for Optical Storage in Transparent Materials

Dynamic Phase and Polarization Modulation Using Two-Beam Parallel Coding for Optical Storage in Transparent Materials

Generation of reconfigurable optical traps for microparticles spatial manipulation through dynamic split lens inspired light structures

Combining average molecular tilt and flicker for management of depolarized light in parallel-aligned liquid crystal devices for broadband and wide-angle illumination

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