| 摘要 |
A filter for filtering electromagnetic radiation has two polarization selection elements and a birefringent element assembly disposed intermediate polarization selection elements. The birefringent element assembly is configured so as to optimize contributions of a fundamental and at least one odd harmonic of a transmission vs. wavelength curve in a manner which enhances transmission vs. wavelength curve stopband depth and passband flatness, so as to enhance performance and mitigate cross-talk.
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