发明名称 |
POLARIZATION ANALYZER |
摘要 |
A thin polarizer array and a wavelength plate array that are composed of micro regions having different optical axis directions and wavelength characteristics and have a high extinction ratio and a low insertion loss, and a polarization analyzer using them are disclosed. An array of micro periodic grooves are formed on a substrate, with the directions changed from one region to another. An alternating multilayer film formed by alternating a layer of high refractive index material such as Si or Ta2O5 and a layer of low refractive index material such as SiO2 is formed by bias sputtering. By selecting a condition that each layer maintains its periodic projecting/recessed shape, an array of photonic crystal polarizer is formed. By mounting this array of photonic crystal polarizer in a photodetector array, a polarization analyzer that is small, has no movable part, is composed of a small number of components, and enables high-precision measurement is constituted.
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申请公布号 |
WO2004008196(A1) |
申请公布日期 |
2004.01.22 |
申请号 |
WO2003JP08888 |
申请日期 |
2003.07.14 |
申请人 |
AUTOCLONING TECHNOLOGY LTD.;KAWAKAMI, SHOJIRO;SATO, TAKASHI;KAWASHIMA, TAKAYUKI;ISHIKAWA, WATARU |
发明人 |
KAWAKAMI, SHOJIRO;SATO, TAKASHI;KAWASHIMA, TAKAYUKI;ISHIKAWA, WATARU |
分类号 |
G02B5/30;G02B27/28;(IPC1-7):G02B5/30;G01J4/04 |
主分类号 |
G02B5/30 |
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