Emiliya Dimova, Andon Rangelov, Elica Kyoseva, "Tunable bandwidth optical rotator," Photonics Res. 3, 177 (2015)

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- Photonics Research
- Vol. 3, Issue 4, 177 (2015)

Fig. 1. Experimental setup. The source S , iris I , lens L 1 , lens L 2 , and polarizer P 1 form a collimated beam of white polarized light. Polarizer P 2 and lens L 3 focus the beam of output light onto the entrance F of an optical fiber connected to a spectrometer. The two parts of the composite polarization rotator, which is constructed of a stack of multiple-order half-wave plates, are denoted as CPR1 and CPR2.

Fig. 2. Measured transmittance for two different composite broadband rotators. The blue dashed line represents a rotator with six half-wave plates, while the red solid line represents a rotator with 10 half-wave plates. The black dash-dotted line represents a rotator comprising two half-wave plates for easy reference.

Fig. 3. Measured transmittance for two different composite narrowband rotators. The blue dashed line represents a rotator with six half-wave plates, while the red solid line represents a rotator with 10 half-wave plates. The black dash-dotted line represents a rotator comprising two half-wave plates for easy reference.
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Table 1. Calculated Angles (in Degrees) of the Optical Axes of the Individual Half-Wave Plates to Implement Composite Sequences of Broadband and Narrowband Half-Wave Plates

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