Polymer waveplate #4513

zero order

Product Overview
Wide-angle waveplates (retarders) are designed to accept a large range of input angles with minimal retardance shift up to 30° angle of incidence (AOI). They are available for visible and NIR design wavelengths (532 nm, 633 nm, 1064 nm, 1550 nm) and in λ/2 or λ/4 retardance values. Construction uses near zero-order laminated birefringent polymer mounted on an N-BK7 substrate and finished with broadband anti-reflection (BBAR) coatings.

Key Features

• Retardance tolerances as tight as ≤λ/250 out to 30° AOI
• Near zero-order laminated birefringent polymer construction
• Optimized for applications requiring wide acceptance angles

Description
These waveplates deliver ≤λ/250 quarter-wave and ≤λ/100 half-wave retardance accuracy at the center wavelength, minimizing sensitivity to angle of incidence. The components are laminated with birefringent polymer on an N-BK7 substrate and receive BBAR coatings to reduce reflections across the design band.

Note
The fast axis is marked with a line for alignment.

Specifications

• Design wavelengths: 532 nm, 633 nm, 1064 nm, 1550 nm
• Retardance values: λ/2 (half-wave) and λ/4 (quarter-wave)
• Retardance accuracy (center): ≤λ/250 for quarter-wave; ≤λ/100 for half-wave
• Angular acceptance: minimal retardance shift up to 30° AOI
• Construction: near zero-order laminated birefringent polymer on N-BK7 substrate
• Surface coating: Broadband Anti-Reflection (BBAR) coating
• Fast axis marking: fast axis indicated by a line