SIGMAKOKI Mica Waveplate φ20mm　WPM-20-4P

Feature

• Wavelengths used for simple experiments and observation systems.
• Mica crystals are thinly sliced and sandwiched with glass plates.
• There are two types of wave plates: a 1/2 wave plate that can rotate the polarization direction and a 1/4 wave plate that can convert linearly polarized light into circularly polarized light.
• Since the element is sandwiched by two pieces of glass, handling is easy.
• A crystal wave plate (WPQ) with high accuracy of phase difference is also available. *Do not use near high-power lasers or high temperature light sources.
• * The phase difference depends on the wavelength. *Please make sure that there are no problems before purchasing.
• * Since natural mica is used, the rating may vary depending on the product.
• * Use a crystal wave plate for polarimetry.

Specifications

• [ common specification]
• Material: Mica of sheet, Glass plate (2 sheets)
• Adaptive wavelength: 400 - 700nm
• Transmitted wavefront accuracy: 2λ λ＝550nm
• Incident angle: 0°
• Design wavelength: 580nm
• Retardation in the design: 1/4 wavelength plate 145nm, 1/2 wavelength plate 290nm
• Scratch - dig: 40-20
• [Individual specification]
• Type: λ/4
• Outer diameter φD: φ20mm
• Thickness t: 2.5mm
• RoHS conform product