The incident angle effect of symmetric periodic multilayer polarizing beam splitter
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Shandong Provincial Key Laboratory of Laser Polarization and Information Technology, Institute of Laser Research, Qufu Normal University, Qufu 273165, China
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Corresponding author:
WU Fu-quan, fqwu@mailq.fnu.edu.cn
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Received Date:
2009-09-14
Accepted Date:
2009-12-24
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Abstract
In order to study the effect of incident angles on the characteristics of symmetric periodic multilayer polarizing beam sputter (PBS),based on equivalent layers concept and stop-hand theory, the bandwidth of spectrum and transmittance change with incident angles were analyzed with the graphical method. The transmittance spectrum of(LHL)^N PBS was measured with a UV3101-PC spectrometer.The experimental results show that the bandwidth spectrum becomes wider and then narrower with incident angles increase, so there is a maximum bandwidth. Taking the point corresponding to the maximum bandwidth as a reference point, the transmittance spectrum moves to longer-wave band and appears hollow aperture with the incident angle decreases;on the other hand,the transmittance spectrum moves to shorter-wave band with the incident angle
increases.The experimental results are consistent with theoretical ones.The results provide an important reference for design and optimization of the symmetric periodic multilayer PBS.
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