Beamsplitters & Fold Mirror

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Zygo Beamsplitters & Fold Mirror optics are designed for beam routing, splitting and directing laser light to interferometers. Choose the configuration that matches your setup using the required Type and Vacuum Compatibility options.

Available types: Fold Mirror, 50/50, 33/67, 75/25, and 10/90.
Vacuum Compatibility options: Yes or No [Standard].
Intended for splitting and routing laser light to interferometers.
Brand: ZYGO.
Select both required options when ordering to match your application.

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Customer Reviews (5.0 / 5 · 5 reviews)

Julian ★★★★★ Oct 22, 2026

The AR coating on these beamsplitters is noticeably better than the cheap ones I used before; my interferometer fringes are finally crisp and stable. Setup was straightforward with the fold mirror aligning perfectly on the first try.

James O. ★★★★★ Oct 21, 2026

The split ratio held steady across my entire alignment process, which saved me a lot of tweaking. Even after hours of use, the beam quality didn't degrade at all.

Abigail ★★★★★ Oct 20, 2026

Routed a 532 nm beam through the fold mirror and the alignment held rock-solid over a two-hour interferometry run; the clear aperture on this unit is genuinely generous. Exactly the kind of repeatable, drift-free performance you need when the fringes start moving.