Not a public offer.

Volume crystals BaGa4Se7 – 1 mm³ = $4 USD

Tolerance aperture: +0.1/-0 mm

Tolerance thickness: +1/-0mm

Tolerance ϕ &θ: +/- 30 arcmin

Perpendicularity: batter than 15 arc min

Inspection polishing.

Chamfers of the aperture: 0.1-0.3 mm

Bubbles and inclusions are not allowed

Polishing quality

Parallelism: ≤ 120 arc seconds;

Flatness: ≤ lambda/6 @ 633 nm;

Surface figure: 30/20 S/D or better;

Orientation: ±0.5 degrees, all axes;

Cost: $ 350 USD

Antireflective coatings by additional agreement

Plates BaGa4Se7

Polishing quality plates

Parallelism: ≤ 120 arc seconds;

Flatness: ≤ lambda/6 @ 633 nm;

Surface figure: 30/20 S/D or better;

Orientation: ±0.5 degrees, all axes;

Cost: $ 450 USD