Direct fabrication of terahertz optical devices on low-absorption polymer substrates

Ma, Y., Khalid, A. , Drysdale, T.D. and Cumming, D.R.S. (2009) Direct fabrication of terahertz optical devices on low-absorption polymer substrates. Optics Letters, 34(10), pp. 1555-1557. (doi: 10.1364/OL.34.001555)

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We have fabricated terahertz wire grid polarizer and terahertz bandpass filter devices oil high-density polyethylene substrates using simple photolithographic fabrication techniques. The performance of the fabricated devices was measured using a Fourier transform IR spectrometer. Both devices showed good performance in the terahertz frequency range up to 5 THz, in agreement with rigorous coupled-wave analysis (polarizer) and finite-difference time-domain (filter) simulations. Our results successfully demonstrate the use of standard fabrication techniques to produce large-aperture free-standing terahertz optical devices on low-absorption polymer materials with the advantage of low cost using a simple fabrication process. The fabricated polarizer had better than 30 dB extinction ratio at 3 THz. Bandpass filters were demonstrated at three different center frequencies (1.5, 1.8, 2.9 THz) with a 3 dB insertion loss and 2 <= Q <= 7.

Item Type:Articles
Keywords:Bandpass filter, device, devices, fabrication, filter, frequencies, low-cost, optics, performance, polymer, ratio, simulation, spectroscopy, substrate, terahertz, terahertz frequencies, THz, time, transmittance
Glasgow Author(s) Enlighten ID:Ma, Mr Yong and Cumming, Professor David and Drysdale, Dr Timothy and Khalid, Dr Ata-Ul-Habib
Authors: Ma, Y., Khalid, A., Drysdale, T.D., and Cumming, D.R.S.
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
Journal Name:Optics Letters
Publisher:Optical Society of America
ISSN (Online):1539-4794

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