In this work the extraordinary and ordinary refractive indices of different commercial liquid crystal (LC) compounds have been measured at the wavelength lambda = 1550nm. Four samples have been investigated. Two of them are LCs Merck 10400-000 and 10400-100. The other two have been obtained mixing the previous LCs in different proportions. The method used for the measurement is based on a refractometric technique that takes advantage of refraction of a narrow laser beam by a wedged shaped LC cell. The method allows the measurement of both the extraordinary and ordinary refractive indices of the LC. The measurement of the angle of the wedged cell is a very critical point and it has been performed by means of an optical method. The refractive indices have been measured at different temperatures.
Measurement of refractive indices of the liquid crystal mixtures Merck 10400-000 and 10400-100 at the infrared wavelength lambda=1550 nm
FAETTI, SANDRO
2007-01-01
Abstract
In this work the extraordinary and ordinary refractive indices of different commercial liquid crystal (LC) compounds have been measured at the wavelength lambda = 1550nm. Four samples have been investigated. Two of them are LCs Merck 10400-000 and 10400-100. The other two have been obtained mixing the previous LCs in different proportions. The method used for the measurement is based on a refractometric technique that takes advantage of refraction of a narrow laser beam by a wedged shaped LC cell. The method allows the measurement of both the extraordinary and ordinary refractive indices of the LC. The measurement of the angle of the wedged cell is a very critical point and it has been performed by means of an optical method. The refractive indices have been measured at different temperatures.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
