Precision Retarder

• Company: Meadowlark Optics Inc.
• Type: Other
• Diameter / Dimension: 3mm - 200mm
• Applications: Astronomy, Biomedical/Medical, Communications, Industrial, Military, Scientific Research, Other
• Retarder Material: Birefringent Polymer
• Custom Wavelengths: 400 - 1800 nm
• Retardance Accuracy: ≤ λ/350
• Wavefront Distortion: ≤ λ/5
• Beam Deviation: ≤ 1 arc-min
• Reflectance: ≤ 0.5% (normal incidence)

Meadowlark Optics specializes in precision polymer retarders for the visible to near infrared region. Our Precision Retarders have the highest optical quality and tightest retardance tolerance of all polymer retarders. These true zero-order Precision Retarders consist of a birefringent polymer cemented between two precision polished, optically flat BK 7 windows. The retarder fast axis is conveniently marked for quick and easy reference.

Meadowlark Optics has developed precision ellipsometric techniques that can measure retardance to λ/1000. Our metrology for these measurements is the best in the industry. You can have absolute confidence that the calibration measurements supplied with your retarder are of the highest accuracy obtainable.