Optical Windows

PhotonExport supplies optical windows and stage glass for custom applications where a protective component is necessary to separate two elements. Optical windows and stage glass are available in a wide range of sizes and shapes, and can be supplied with an anti-reflection coating or uncoated, depending on your use-case requirements.

Optical Window & Stage Glass Manufacturing Specifications

	Commercial	Precision	High Precision
Diameter	Ф3.5~Ф250	Ф3.5~Ф250	Ф3.5~Ф250
Diameter Tolerance	0/-0.02	0/-0.015	0/-0.001
Thickness Tolerance	±0.1	±0.01	/
Surface Sag	Ra：0.001	Ra：0.001	Ra：0.0002
Radius	R5~R∞	R5~R∞	R5~R∞
Power (P - V)	N=±5	N=±2	N=±1
Irregularity (P - V)	ΔN=1	ΔN=0.5	ΔN=0.3
Centering (Beam Deviation)	≤60″	≤30″	≤10″
Surface Quality	60-40	20-10	10-05

Window & Stage Glass Coating Capabilities

Substrates	All Glass Types
Spectral Ranges	300 ～3000nm
Spectral Edge Tolerance	<1% Deviation, <0.2% Special Cases
Bandwidth	1nm - Broadband
Reflection	>0.3% (absolute); <0.2% (average)
Laser Damage Threshold	Up to 20J/cm2 @ 20ns Pulses
Durability	MIL-STD-810F, Section 507.4; MIL-C-48497A, Section 3.4.1