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arXiv · 2002.06792

A high-power spectral beamsplitter for closely spaced frequencies

Christian D. Marciniak·Alexander Rischka·Robert N. Wolf·Michael J. Biercuk
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Abstract

An experimental realization of a compact, high-power spectral beamsplitter for nearly equal frequencies and identical polarization based on two-beam interference in a free-space Mach-Zehnder interferometer is presented. We demonstrate the power- and cost-efficient generation and subsequent spatial separation of two laser tones from a single sum-frequency-generation stage using double-sideband suppressed-carrier modulation in the infrared, and beam splitting in the visible at high power. The interferometer spectrally splits >98% of the incident power when accounting for bulk absorption. The beamsplitter can be constructed identically for any power or spectral range required for which suitable optics are available.

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Christian D. Marciniak, Alexander Rischka, Robert N. Wolf, Michael J. Biercuk. 2020-04-03. A high-power spectral beamsplitter for closely spaced frequencies. https://doi.org/10.1364/oe.390956

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