Verification of Polarization Matching on the Hologram Recording Plane for the Implementation of an Optimized Digital Hologram Printing System

Abstract

Conventional studies on digital hologram printer have mainly been conducted on image generation and reconstruction such as multi-view image generation method, computer-generated hologram (CGH) and a method of displaying a wave-front for a 3D object. However, There should be a criterion to evaluate the quality of the reconstructed image because hologram printer use photosensitive recording interference patterns in holographic material. For this reason, The evaluation method of the completed hologram using a digital hologram printer is focused on how well it came out without aberration or how high intensity of light has been reconstructed. However polarization has an effect on hologram regeneration efficiency because holography uses a laser that generates electromagnetic waves. Hologram recording method is usually to match linear polarization in the same direction. but digital hologram printer composed of complex optical components that causes a phase shifting due to a setup error. it will be a problem for resulting in unwanted polarization at the final recording plane. In this paper, we analyzed the possible polarization changes and analyze the optimal polarization matching status using values from hologram results and use them as a study to improve the efficiency of hologram result from holographic printer.

Maximizing TIR efficiency in wave-guide-based augmented reality through holographic optical element

“…The results show significant improvements in TIR efficiency and light utilization when using holographic optical elements. Virtual images exhibit enhanced clarity, brightness, and color accuracy, thereby improving the display efficiency of AR devices by reducing light loss [3][4]. In conclusion, the angle analysis of holographic optical element recording demonstrates the potential to enhance optical performance in waveguide AR displays.…”

Editorial: Advanced nonlinear optical materials and devices

“…The nonlinear absorption coefficient (β of ~10 −1 cm/GW) of those 98% deuterated DKDP crystals was obtained using the Z-scan technique with the fourth harmonic generated wavelength (266 nm) of picosecond Nd:YAG laser pulses. Hwang et al [9] have studied the likely polarization changes and analysed the optimum polarization matching status using values from their hologram results. Further, they used them as a study to progress the efficiency of a hologram resulting from a holographic printer.…”

Development of holographic printed HOE recording technology with VHG-based FOV analysis for waveguide-type NED system

“…However, uniformity cannot be guaranteed as the system is fabricated by an analog hologram recording method. Moreover, when the specifications change, the optical system must be redesigned, which is time consuming and expensive [13,14]. In this paper, we propose optimal recording conditions by analyzing the selectivity and efficiency of images according to the digital hologram recording method by a waveguide-type NED system.…”