Compare Model Drawings, CAD & Specs Diameter Wavelength Range Availability Price
Quarter Wave Plate, Multiple-Order, Quartz, 12.7 mm Diameter, 266 nm
$242
12.7 mm 266 nm
Quarter Wave Plate, Multiple-Order, Quartz, 12.7 mm Diameter, 354.7 nm
$242
12.7 mm 354.7 nm
Quarter Wave Plate, Multiple-Order, Quartz, 12.7 mm Diameter, 413 nm
$242
12.7 mm 413 nm
Quarter Wave Plate, Multiple-Order, Quartz, 12.7 mm Diameter, 488 nm
$242
12.7 mm 488 nm
Quarter Wave Plate, Multiple-Order, Quartz, 12.7 mm Diameter, 532 nm
$242
12.7 mm 532 nm
Quarter Wave Plate, Multiple-Order, Quartz, 12.7 mm Diameter, 532 & 1064 nm
$278
12.7 mm 532 & 1064 nm
Quarter Wave Plate, Multiple-Order, Quartz, 12.7 mm Diameter, 632.8 nm
$242
12.7 mm 632.8 nm
Quarter Wave Plate, Multiple-Order, Quartz, 12.7 mm Diameter, 780 nm
$242
12.7 mm 780 nm
Multiple-Order Quarter Wave Plate, Quartz, 12.7 mm Diameter, 1064 nm
$242
12.7 mm 1064 nm
Quarter Wave Plate, Multiple-Order, Quartz, 25.4 mm Diameter, 266 nm
$302
25.4 mm 266 nm
Quarter Wave Plate, Multiple-Order, Quartz, 25.4 mm Diameter, 354.7 nm
$302
25.4 mm 354.7 nm
Quarter Wave Plate, Multiple-Order, Quartz, 25.4 mm Diameter, 488 nm
$302
25.4 mm 488 nm
Quarter Wave Plate, Multiple-Order, Quartz, 25.4 mm Diameter, 532 nm
$302
25.4 mm 532 nm
Quarter Wave Plate, Multiple-Order, Quartz, 25.4 mm Diameter, 532 nm & 1064 nm
$403
25.4 mm 532 & 1064 nm
Quarter Wave Plate, Multiple-Order, Quartz, 25.4 mm Diameter, 632.8 nm
$302
25.4 mm 632.8 nm
Quarter Wave Plate, Multiple-Order, Quartz, 25.4 mm Diameter, 780 nm
$302
25.4 mm 780 nm
Quarter Wave Plate, Multiple-Order, Quartz, 25.4 mm Diameter, 1064 nm
$302
25.4 mm 1064 nm

Specifications

  • Material
    Schlieren Grade Quartz
  • Construction
    Single Plate
  • Retardation
    λ/4
  • Retardation Accuracy
    ±λ/300 at 20 ±1°C
  • Damage Threshold
    2 MW/cm2 CW
  • Pulse Damage Threshold
    2 J/cm2 with 10 nsec pulses
  • Wavefront Distortion
    ≤λ/10 at 632.8 nm over the full aperture
  • Surface Quality
    10-5 scratch-dig
  • Wedge
    <0.5 arc sec

Features

Quarter Waveplates

Quarter-wave plates are used to turn plane-polarized light into circularly polarized light and vice versa. To do this, we must orient the wave plate so that equal amounts of fast and slow waves are excited. We may do this by orienting an incident plane-polarized wave at 45° to the fast (or slow) axis, as shown.

Wavelength Sensitivity

When using multiple-order wave plates, several items should be considered. A wave plate of practical thickness produces a multiple of λ/4 or λ/2 retardation (e.g. 15 1/2 λ for a ~1mm thick optic). Higher orders cause retardation to vary dramatically with change in wavelength.

Temperature Sensitivity

Wave plates are sensitive to temperature changes. A typical multiple-order wave plate has a temperature coefficient of 0.0015λ/°C, compared to 0.0001λ/°C for a zero-order wave plate, so tighter temperature control will be required.

How Quartz Waveplates Work

Quartz is an example of a uniaxial crystal, or crystal in which one axis has a different refractive index than the other two axes. The index associated with the unique axis is called the extraordinary index, the ordinary refractive index is associated with the remaining two axes. A half or quarter wave plate is a polished slice of a uniaxial crystal, in which the extraordinary axis lies within the plane of the optic. Light with polarization vector components oriented along the ordinary axis will undergo a phase delay relative to the perpendicular component oriented along the extraordinary axis. Change in polarization state will depend on the input state, and the physical orientation of the waveplate.