標題: | Alternative method for measuring the full-field refractive index of a gradient-index lens with normal incidence heterodyne interferometry |
作者: | Chen, Yen-Liang Hsieh, Hung-Chih Wu, Wang-Tsung Chang, Wei-Yao Su, Der-Chin 光電工程學系 Department of Photonics |
公開日期: | 20-十二月-2010 |
摘要: | A linearly/circularly polarized heterodyne light beam coming from a heterodyne light source with an electro-optic modulator in turn enters a modified Twyman-Green interferometer to measure the surface plane of a GRIN lens. Two groups of periodic sinusoidal segments recorded by a fast complementary metal-oxide semiconductor camera are modified, and their associated phases are derived with the unique technique. The data are substituted into the special equations derived from the Fresnel equations, and the refractive index can be obtained. When the processes are applied to other pixels, the full-field refractive-index distribution can be obtained similarly. Its validity is demonstrated. (C) 2010 Optical Society of America |
URI: | http://dx.doi.org/10.1364/AO.49.006888 http://hdl.handle.net/11536/26211 |
ISSN: | 0003-6935 |
DOI: | 10.1364/AO.49.006888 |
期刊: | APPLIED OPTICS |
Volume: | 49 |
Issue: | 36 |
起始頁: | 6888 |
結束頁: | 6892 |
顯示於類別: | 期刊論文 |