Research of the THz Reflectors Based on Hybrid Polymeride

Abstract:

Two kinds of nanoscale particles (TiO₂ and ZrO₂) are dispersed uniformly in PVDF (polyvinylidene fluoride) solution. The pure PVDF film, hybrid TiO₂ or ZrO₂:PVDF (the weight ratio of 5:5, 4:6 and 3:7, respectively) films are fabricated by spin-coating. THz time-domain spectroscopy system (THz-TDS) has been used to get the transmission spectra of the samples in THz band, from which the optical constants of the samples are extracted. The reflection spectra of the distributed bragg reflectors (DBRs) with structure of Si substrate/[HL]ⁿH (H indicates TiO₂:PVDF or ZrO₂:PVDF, and L indicates pure PVDF, n=1, 2 and 3) are simulated based on transfer matrix method. The results show that from 600μm to 800μm, the reflectances of the two reflectors are both increased with the number of dielectric layers, and when n=3, the reflectivity of two reflectors at resonance wavelength are almost reaching 95%.

• Periodical: Advanced Materials Research (Volumes 760-762)
• Pages: 736-740
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.760-762.736
• Online since: September 2013
• Authors: Jin Ke Wu, Jian Po Su, Feng Ying Ma
• Keywords: Composite Polymeride Films, Cptical Parameter, Reflectance Characteristics, THz Time-Domain Spectroscopy

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