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What are the challenges of linear polarized broadband terahertz waves? 


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Broadband linear polarized terahertz waves face several challenges. One challenge is the limited material availability and narrow bandwidth of wave plates used for polarization conversion . Another challenge is the low polarization conversion efficiency, fixed and narrow polarization conversion band, and low output polarization purity of terahertz polarization converters . Additionally, the dielectric materials used in periodic two-dimensional devices for polarization control suffer from high dissipation and less-optimal device configuration, resulting in limited efficiency, bandwidth, and allowable incidence angle . Furthermore, the permeability of materials at high frequencies, such as the terahertz spectrum, approaches unity, making it challenging to achieve broadband angular selectivity for s-polarized waves . These challenges hinder the development of efficient and compact terahertz emitters/detectors with a broadband and gapless spectrum that can be tailored for various pump photon energies .

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The paper does not mention any challenges specifically related to linear polarized broadband terahertz waves.
The paper does not mention the challenges of linear polarized broadband terahertz waves.
The paper does not mention the challenges of linear polarized broadband terahertz waves.
The paper does not mention the challenges of linear polarized broadband terahertz waves. The paper is about achieving broadband angular selectivity for s-polarized terahertz incidences.
The paper does not explicitly mention the challenges of linear polarized broadband terahertz waves.

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