K. Stanaitis, K. Redeckas, A. Bielevičiūtė, M. Bernatonis, D. Jokubauskis, V. Čižas, L. Minkevičius
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引用次数: 0
摘要
太赫兹(THz)频率范围日益普及,揭示了一个日益明显的应用限制因素--最终装置的价格。本研究旨在通过评估光学元件在太赫兹频率范围内的适用性来解决这一问题,这些元件是使用两种容易获得的材料--高抗冲聚苯乙烯(HIPS)和石蜡--制造的。使用时域光谱法(TDS)进行的初步分析表明,这两种材料都具有足够的折射率(n ≈ 1.55)和较高的透射率,因此结果很有希望。这使我们可以假设制造低成本太赫兹频率范围透镜的可行性。利用挤压 3D 打印和石蜡模塑技术制造了焦距为 f = 20、30 和 40 毫米的透镜。制造出的透镜显示出令人满意的光束聚焦能力,可与现有成本效率低得多的解决方案相媲美。使用所制造的透镜成功实现了太赫兹成像,证明了使用所提议的低成本组件的成像系统的应用可能性。
Study of the low-cost HIPS and paraffin-based terahertz optical components
The ever-increasing popularity of the terahertz (THz) frequency range reveals the increasingly obvious applicability limiting factor – the price of the final setup. This study is intended to contribute to the solution by evaluating the THz frequency range suitability of the optical components, fabricated using two easily accessible materials – high impact polystyrene (HIPS) and paraffin. The primary analysis using time-domain spectroscopy (TDS) revealed promising results, as both materials had sufficient refractive indexes of n ≈ 1.55 and a high transmittance. That allowed one to assume the feasibility of creating a low-cost THz frequency range lens. Lenses of focal lengths of f = 20, 30, 40 mm were fabricated using extrusion 3D printing and paraffin moulding. The produced lenses showcased the satisfactory beam focusing ability, comparable to that of already existing much less cost-efficient solutions. The THz imaging using the fabricated lenses has successfully been realized, proving the applicational possibilities of the imaging system with the proposed low-cost components employed.
期刊介绍:
The main aim of the Lithuanian Journal of Physics is to reflect the most recent advances in various fields of theoretical, experimental, and applied physics, including: mathematical and computational physics; subatomic physics; atoms and molecules; chemical physics; electrodynamics and wave processes; nonlinear and coherent optics; spectroscopy.