Phase-controlled polarization modulators
Phase-controlled polarization modulators
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DOI：
10.1117/12.925214
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发表时间：
2012-10
期刊：
影响因子：
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通讯作者：
D. Chuss;Edward J. Wollack;G. Novak;G. Pisano;J. Eimer;S. Moseley;M. Krejny;K. U-yen
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文献类型：
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作者：
D. Chuss;Edward J. Wollack;G. Novak;G. Pisano;J. Eimer;S. Moseley;M. Krejny;K. U-yen
我们报告了毫米/亚毫米偏振调制器的技术发展，该调制器通过在两个正交偏振态之间引入可变的受控相位延迟来进行操作。可变延迟偏振调制器 (VPM) 通过在两个线性正交偏振状态之间引入可变相位延迟来工作，从而将单个线性偏振可变映射到斯托克斯参数和圆（斯托克斯 V）偏振的组合。原型 VPM 的表征在 350 和 3000 微米处进行。我们还描述了一种调制器，其中在右圆偏振态和左圆偏振态之间引入可变相位延迟。在此架构中，线性偏振被完全调制。这些设备中的每一个都由一个平行于可移动镜子并位于其前面的偏振双工器组成。调制涉及镜面的亚波长平移，从而改变相位延迟的幅度。
We report technology development of millimeter/submillimeter polarization modulators that operate by introducing a variable, controlled phase delay between two orthogonal polarization states. The variable-delay polarization modulator (VPM) operates via the introduction of a variable phase delay between two linear orthogonal polarization states, resulting in a variable mapping of a single linear polarization into a combination of that Stokes parameter and circular (Stokes V) polarization. Characterization of a prototype VPM is presented at 350 and 3000 microns. We also describe a modulator in which a variable phase delay is introduced between right- and left- circular polarization states. In this architecture, linear polarization is fully modulated. Each of these devices consists of a polarization diplexer parallel to and in front of a movable mirror. Modulation involves sub-wavelength translations of the mirror that change the magnitude of the phase delay.