Hybrid wedge plate-grating interferometer for collimation testing

J.S.Darlin; M.P.Kothiyal; R.S.Sirohi

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Hybrid wedge plate-grating interferometer for collimation testing

机译：Hybrid wedge plate-grating interferometer for collimation testing

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A new type of collimation testing technique using a single wedge plate in conjunction with a dual-field grating has been described. Interference pattern produced by a wedge plate illuminated by the test beam is superposed on a grating to get moiré fringes. By using two different types of dual-field gratings, two testing configurations are obtained. These dual-field moiré patterns provide self-referencing and improved sensitivity in collimation testing. The principle of the proposed techniques and experimental results are presented.#1998 Society of Photo-Optical Instrumentation Engineers. S0091-3286(98)01105-2 Subject terms: collimation testing; lateral shear interferometry; Talbot interferom-etry. Paper 09077 received July 11, 1997; revised manuscript received Dec. 16, 1997; accepted for publication Dec. 17, 1997.

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《Optical Engineering》 |1998年第6期|1593-1598|共6页
作者
J.S.Darlin; M.P.Kothiyal; R.S.Sirohi;
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作者单位

Indian Institute of Technology Physics Department Applied Optics Laboratory /Madras 600 036 India;

Indian Institute of Technology Physics Department Applied Optics Laboratory/ Madras 600 036 India;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种英语
中图分类光学仪器;
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Hybrid wedge plate-grating interferometer for collimation testing

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