Session Index

Optical frequency rulers (OFR) are suggested for use as optical wavelength or frequency references for spectra manipulation or unknown wavelength measurement. In the past, complicated mechanisms that are not easy to utilize were used to make OFR; this work introduces a simple structure to produce OFR, which should be easier to implement. The numerical results show that those spectral ticks can be moved to higher or lower wavelengths by rotating the analyzer’s angle. This scheme provides another possibility for performing movable OFR with the merit of easy usage.

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A hole-patterned electrode (HPE) liquid crystal (LC) lens with positive (0 D - 0.7 D) and negative focal lengths (0 D - −1.1 D) is demonstrated. It employs an optically compensated bend (OCB) cell filled with dual-frequency LC materials and alignment films with intermediate pretilt angles. This one-layer structure with symmetric LC orientation achieves better reduction in tilt and coma aberration compared to a complicated two-layer HPE LC lens. Additionally, the use of dual-frequency switching and reduced backflow effect in the OCB cell enhances the response by about 7 times.

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This report introduces an accurate and efficient simulation approach for modeling the see-through birdbath architecture, with the precise modeling of the polarizing elements. The architecture includes polarizing elements to enhance light efficiency and reduce light leakage. The workflow incorporates Ansys Lumerical for generating the essential JSON file via STACK simulation to model the anisotropic polarizing element accurately. Ansys Zemax OpticStudio is utilized for system performance check. The study highlights the crucial role of accurate polarizing element modeling in achieving optimal performance for complex see-through optical systems.

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In this research, we propose a green micro-resonant cavity LED with staggered InGaN MQWs, nanoporous n-GaN DBRs (NP DBR), and Ta2O5/SiO2 DBRs. Simulations show improved wavefunction overlaps of 8.8% for regular quantum well and 18.1% for staggered quantum well. Furthermore, a blue-shift reduction from 10.25 nm to 2.25 nm for regular and staggered quantum well respectively. The staggered MQWs maintain output power at high currents. Additionally, 6.5 pairs of Ta2O5/SiO2 DBRs narrows the FWHM from 40 nm to 0.3 nm, achieving a smaller divergence angle.

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This study proposes a method for scanning 2D patterns using multiple blue laser diodes and a 1D rotated polygon mirror. It can further excite remote phosphors with blue laser to generate white light, thereby projecting various white light patterns. For this, we can control the size and density of the pattern by adjusting the size and number of faces of the polygon mirrors. Currently, two types of polygon mirrors, reflective and transmissive, are designed in this study.

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Spatial light modulator (SLM) as an active optical component to design laser phase modulation for generating a matrix of focal points. By evenly distributing the energy of the abundant laser light source among the focal points, parallel processing can be achieved, potentially improving processing speed by an order of magnitude for manufacturers. By dynamically optimizing the phase parameters based on feedback images from the focal point array, and updating the focal point array size, intensity uniformity, and focusing parameters as per application requirements, the project expects to significantly enhance the stability and versatility of laser processing.

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Terahertz (THz) plasmonic devices based on metal-coated woven-wire meshes (MCWMs) have been demonstrated as biosensors [1], but their THz electronic fields of various metal or conductive surface layers are not presented yet, which correlate to conductivity, thicknesses, coverage percentages and geometry of the surface-coated layers. In this study, one theoretical model of MCWM is presented to further evaluate the possible parameters to approach artificial surface plasmonic field in 0.1–1 THz that cumulates at metal-dielectric interface of MCMW. Based on this MCWM-substrate-based THz electric field, homogeneous and inhomogeneous integration of dielectric composition are designed and demonstrated to reveal future applications.

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