TY - JOUR
T1 - Linear birefringence parameters determination of a multi-order wave plate via phase detection at large oblique incidence angles
AU - Tsai, Chien Chung
AU - Wei, Hsiang Chun
AU - Hsieh, Cheng Hung
AU - Wu, Jheng Syong
AU - Lin, Chu En
AU - Chou, Chien
PY - 2008/6/1
Y1 - 2008/6/1
N2 - In order to characterize the linear birefringence parameters (LBPs) of a multi-order wave plate (MWP) including ordinary refractive index no, extraordinary refractive index ne and the order number precisely, phase retardation measurement by means of large oblique incidence angle on the MWP has been proposed and demonstrated. However, the effects of spatial shifting and multiple reflections by the MWP depress the accuracy of the measurements significantly. Thus, we propose a retro-reflected geometry in a polarized heterodyne interferometer that can determine the LBPs of a MWP precisely. This method is not only able to reduce the spatial shifting effect but also avoids multiple reflections of the emerging beams. Experimentally, the oblique incidence angle in a range from 30° to 44° was scanned and the highest sensitivity ever for measurements of no and ne for an uncoated MWP was obtained. The detection sensitivity for the refractive indices (no, ne, no-ne) of an uncoated MWP can be up to 10-6.
AB - In order to characterize the linear birefringence parameters (LBPs) of a multi-order wave plate (MWP) including ordinary refractive index no, extraordinary refractive index ne and the order number precisely, phase retardation measurement by means of large oblique incidence angle on the MWP has been proposed and demonstrated. However, the effects of spatial shifting and multiple reflections by the MWP depress the accuracy of the measurements significantly. Thus, we propose a retro-reflected geometry in a polarized heterodyne interferometer that can determine the LBPs of a MWP precisely. This method is not only able to reduce the spatial shifting effect but also avoids multiple reflections of the emerging beams. Experimentally, the oblique incidence angle in a range from 30° to 44° was scanned and the highest sensitivity ever for measurements of no and ne for an uncoated MWP was obtained. The detection sensitivity for the refractive indices (no, ne, no-ne) of an uncoated MWP can be up to 10-6.
KW - Linear birefringence parameters
KW - Multiple-order phase retardation plate
KW - Oblique incidence angle
KW - Optical heterodyne interferometer
UR - http://www.scopus.com/inward/record.url?scp=41849117982&partnerID=8YFLogxK
U2 - 10.1016/j.optcom.2008.01.065
DO - 10.1016/j.optcom.2008.01.065
M3 - 文章
AN - SCOPUS:41849117982
SN - 0030-4018
VL - 281
SP - 3036
EP - 3041
JO - Optics Communications
JF - Optics Communications
IS - 11
ER -