Control of visibility profile in spectral low-coherence interferometry

被引：7

作者：

Hughes, M. ^{[1
]}

Woods, D. ^{[1
]}

Podoleanu, A. Gh. ^{[1
]}

机构：

[1] Univ Kent, Sch Phys Sci, Appl Opt Grp, Canterbury CT1 7NH, Kent, England

来源：

ELECTRONICS LETTERS | 2009年 / 45卷 / 03期

关键词：

TALBOT BANDS; TOMOGRAPHY;

D O I：

10.1049/el:20092512

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

It is demonstrated that, by obstructing half of one of the two beams from a low coherence interferometer before it is incident on the diffraction grating in a spectral interferometry setup, an asymmetric pro. le can be generated for the visibility of the channelled spectrum (V) with optical path difference (OPD). Together with a lateral shift of the beam, as inspired by Talbot bands studies, this can be used to optimise V(OPD). The model for the visibility of Talbot bands is improved by considering the spectrometer resolution and an improved Talbot band experiment is demonstrated. It is also shown that it is possible to obtain regions of no interference around zero OPD.

引用

页码：182 / 183

页数：2

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