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A low-cost, ultra-wide range infrared polarizer

Rutt, H.N. (1995) A low-cost, ultra-wide range infrared polarizer Measurement Science and Technology, 6, (8), pp. 1124-1132. (doi:10.1088/0957-0233/6/8/006).

Record type: Article


There is a shortage of convenient, low-cost, wide-range infrared polarizers. Only wire grid devices are available to cover the entire mid- and far-infrared region, several high-cost polarizers being needed to cover the full spectral range, with limited performance. It is shown that a "pile-of-plates" polarizer suitable for use in Fourier transform infrared spectrophotometers can be constructed from semiconductor grade silicon (resistivity exceeding 10 Omega cm, n-type preferably float-zone silicon) which can be used from about 1.2µm to above 250µm. "Optical grade" silicon is not reliably suitable for use in the far infrared. The polarizer is ideal for use with some lasers (He-Ne 1.52 or 3.39µm lines, CO, HF, DF and diodes) but it is not suitable for carbon dioxide lasers of significant power.

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Published date: 1995
Organisations: Optoelectronics Research Centre


Local EPrints ID: 77766
ISSN: 0957-0233
PURE UUID: 2ce2c262-58dc-4284-909c-5106d6c03048

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Date deposited: 11 Mar 2010
Last modified: 18 Jul 2017 23:29

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Author: H.N. Rutt

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