Diamond Optical Windows for Peak Performance in Advanced Optical Systems

CVD polycrystalline diamond – optical window blanks

We supply CVD polycrystalline diamond windows for laser systems, infrared domes, FTIR spectrometers, and other optical equipment that runs under high thermal load or abrasive conditions.

What we can provide:

Diameters from 3 mm to 50 mm (larger available on request)

Thickness from 0.3 mm to 3 mm

Both sides polished to surface roughness <5 nm Ra (tighter available)

Broadband transmission from UV to far-IR, or AR coating per your wavelength range

Custom shapes: round, rectangular, square, with chamfered edges

Typical use cases we have shipped for:

Output windows for CO₂ lasers – replaced ZnSe where coating failure occurred

Protective windows for LiDAR sensors – handled temperature cycling without cracking

FTIR spectrometer windows – chemical inertness required

Before quotation, our engineering team checks two things:

Whether your desired diameter-to-thickness ratio is stable for polishing, and whether you need polycrystalline or single crystal. We will tell you upfront.

No minimum order quantity for standard sizes. Lead time typically 3–4 weeks for uncoated windows.

FAQ：

1. What is the surface finish like on your optical CVD plates?

We can polish them to a very smooth, optical-grade finish, suitable for laser windows and infrared applications.

2. Can these CVD diamond plates be customized in size and thickness?

Yes. We cut and grind them to your exact dimensions based on your requirements.

3. Do optical CVD diamond plates scratch easily?

No. Diamond is the hardest material, so they are extremely scratch-resistant compared to other optical materials like sapphire or glass.