Journal
OPTICS EXPRESS
Volume 28, Issue 8, Pages 11372-11379Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.390956
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Funding
- Australian Research Council Centre of Excellence for Engineered Quantum Systems [CE170100009]
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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. (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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