4" 4% Transmission Flat, Uncoated

Name: 4" 4% Transmission Flat, Uncoated
Brand: ZYGO
SKU: 6024-0314-11
Price: 33.45 USD
Availability: InStock
Rating: 4.6 (5 reviews)

4" 4% Transmission Flat, Uncoated - Main image

4" 4% Transmission Flat, Uncoated - View 2

$33.45 ~~$44.6~~ In stock

Category: Accessories

Description

Transmission Flat - 4" , Uncoated

Flatness: 1/20 Wave PV

AR coated for 633 and 1550 nm on back surface

Reference surface is uncoated for approx. 4% reflectance to provide for optimal contrast from 0.8% - 20% reflectivity test parts

*Can be used as both transmission and reference flat*

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Customer Reviews (4.6 / 5 · 5 reviews)

Ellie H. ★★★★★ Oct 22, 2026

The 1/20 wave flatness on this 4" optic made aligning my interferometer a breeze. The uncoated surface gives me exactly the 4% reflection I needed for my reference beam.

Ella V. ★★★★★ Oct 21, 2026

Finally got around to checking this 4" flat against my Newport mirror, and the 1/20 wave PV figure is spot-on. The uncoated side gives a clean 4% reflection that's perfect for my alignment setup without any ghosting issues.

Samuel P. ★★★★★ Oct 20, 2026

Checked the flatness with my interferometer and it read right at 1/20 wave PV, exactly as specified. The uncoated surface gives that clean 4% reflectance for my setup, and the back coating holds up well without any visible haze.