Design and analysis of non-polarizing beam splitter in a glass cube

Jinhui Shi; Zhengping Wang; Zongjun Huang; Qingbo Li

doi:10.1117/12.803511

18 November 2008 Design and analysis of non-polarizing beam splitter in a glass cube

Jinhui Shi, Zhengping Wang, Zongjun Huang, Qingbo Li

Proceedings Volume 7135, Optoelectronic Materials and Devices III; 71352P (2008) https://doi.org/10.1117/12.803511
Event: Asia-Pacific Optical Communications, 2008, Hangzhou, China

Abstract

The reflectance and transmittance of thin films at oblique incident angles exhibit strong polarization effects, particularly for the films inside a glass cube. However, the polarization effects are undesirable in many applications. To solve this problem, non-polarizing beam splitters with unique optical thin films have been achieved employing a method of combination of interference and frustrated total internal reflection, the non-polarizing condition expressions based on frustrated total internal reflection has been derived, and the design examples of non-polarizing beam splitters with an optimization technique have been also presented. The results of Rp=(50±0.5)%, Rs=(50±0.5)% andΔr=(0±0.3) degree in the wavelength range of 400-700nm have been obtained. The thickness sensitivity of NPBSs is also analyzed.

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Jinhui Shi, Zhengping Wang, Zongjun Huang, and Qingbo Li "Design and analysis of non-polarizing beam splitter in a glass cube", Proc. SPIE 7135, Optoelectronic Materials and Devices III, 71352P (18 November 2008); https://doi.org/10.1117/12.803511

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KEYWORDS

Reflectivity

FT-IR spectroscopy

Beam splitters

Reflection

Refractive index

Glasses

Transmittance

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