Compare Model Drawings, CAD & Specs Diameter Wavelength Range Availability Price
Zero-Order Waveplate, Quarter-Wave, Quartz, 12.7 mm Diameter, 400 nm
$427
In Stock
12.7 mm 400 nm
In Stock
Zero-Order Waveplate, Quarter-Wave, Quartz, 12.7 mm Diameter, 520 nm
$427
In Stock
12.7 mm 520 nm
In Stock
Zero-Order Waveplate, Quarter-Wave, Quartz, 12.7 mm Diameter, 532 nm
$427
In Stock
12.7 mm 532 nm
In Stock
Zero-Order Waveplate, Quarter-Wave, Quartz, 12.7 mm Diameter, 632.8 nm
$427
In Stock
12.7 mm 632.8 nm
In Stock
Zero-Order Waveplate, Quarter-Wave, Quartz, 12.7 mm Diameter, 800 nm
$427
In Stock
12.7 mm 800 nm
In Stock
Zero-Order Waveplate, Quarter-Wave, Quartz, 12.7 mm Diameter, 850 nm
$427
In Stock
12.7 mm 850 nm
In Stock
Zero-Order Waveplate, Quarter-Wave, Quartz, 12.7 mm Diameter, 905 nm
$427
12.7 mm 905 nm
Zero-Order Waveplate, Quarter-Wave, Quartz, 12.7 mm Diameter, 1030 nm
$427
In Stock
12.7 mm 1030 nm
In Stock
Zero-Order Waveplate, Quarter-Wave, Quartz, 12.7 mm Diameter, 1040 nm
$427
In Stock
12.7 mm 1040 nm
In Stock
Zero-Order Waveplate, Quarter-Wave, Quartz, 12.7 mm Diameter, 1050 nm
$427
In Stock
12.7 mm 1050 nm
In Stock
Zero-Order Waveplate, Quarter-Wave, Quartz, 12.7 mm Diameter, 1064 nm
$427
In Stock
12.7 mm 1064 nm
In Stock
Zero-Order Waveplate, Quarter-Wave, Quartz, 12.7 mm Diameter, 1550 nm
$427
In Stock
12.7 mm 1550 nm
In Stock
Zero-Order Waveplate, Quarter-Wave, Quartz, 25.4 mm Diameter, 266 nm
$504
In Stock
25.4 mm 266 nm
In Stock
Zero-Order Waveplate, Quarter-Wave, Quartz, 25.4 mm Diameter, 354.7 nm
$504
In Stock
25.4 mm 354.7 nm
In Stock
Zero-Order Waveplate, Quarter-Wave, Quartz, 25.4 mm Diameter, 400 nm
$504
In Stock
25.4 mm 400 nm
In Stock
Zero-Order Waveplate, Quarter-Wave, Quartz, 25.4 mm Diameter, 413 nm
$504
In Stock
25.4 mm 413 nm
In Stock
Zero-Order Waveplate, Quarter-Wave, Quartz, 25.4 mm Diameter, 441.6 nm
$504
In Stock
25.4 mm 441.6 nm
In Stock
Zero-Order Waveplate, Quarter-Wave, Quartz, 25.4 mm Diameter, 488 nm
$504
In Stock
25.4 mm 488 nm
In Stock
Zero-Order Waveplate, Quarter-Wave, Quartz, 25.4 mm Diameter, 514.5 nm
$504
In Stock
25.4 mm 514.5 nm
In Stock
Zero-Order Waveplate, Quarter-Wave, Quartz, 25.4 mm Diameter, 520 nm
$504
In Stock
25.4 mm 520 nm
In Stock
Zero-Order Waveplate, Quarter-Wave, Quartz, 25.4 mm Diameter, 532 nm
$504
In Stock
25.4 mm 532 nm
In Stock
Zero-Order Waveplate, Quarter-Wave, Quartz, 25.4 mm Diameter, 632.8 nm
$504
In Stock
25.4 mm 632.8 nm
In Stock
Zero-Order Waveplate, Quarter-Wave, Quartz, 25.4 mm Diameter, 780 nm
$504
In Stock
25.4 mm 780 nm
In Stock
Zero-Order Waveplate, Quarter-Wave, Quartz, 25.4 mm Diameter, 800 nm
$504
In Stock
25.4 mm 800 nm
In Stock
Zero-Order Waveplate, Quarter-Wave, Quartz, 25.4 mm Diameter, 850 nm
$504
In Stock
25.4 mm 850 nm
In Stock
Zero-Order Waveplate, Quarter-Wave, Quartz, 25.4 mm Diameter, 905 nm
$504
In Stock
25.4 mm 905 nm
In Stock
Zero-Order Waveplate, Quarter-Wave, Quartz, 25.4 mm Diameter, 1030 nm
$504
In Stock
25.4 mm 1030 nm
In Stock
Zero-Order Waveplate, Quarter-Wave, Quartz, 25.4 mm Diameter, 1040 nm
$504
In Stock
25.4 mm 1040 nm
In Stock
Zero-Order Waveplate, Quarter-Wave, Quartz, 25.4 mm Diameter, 1064 nm
$504
In Stock
25.4 mm 1064 nm
In Stock
Zero-Order Waveplate, Quarter-Wave, Quartz, 25.4 mm Diameter, 1300 nm
$504
25.4 mm 1300 nm
Zero-Order Waveplate, Quarter-Wave, Quartz, 25.4 mm Diameter, 1550 nm
$504
In Stock
25.4 mm 1550 nm
In Stock

Specifications

  • Retardation
    λ/4
  • Retardation Accuracy
    ±λ/300
  • Material
    Quartz
  • Construction
    Two Air-Spaced Quartz Plates
  • Wavefront Distortion
    ≤λ/10 at 632.8 nm over the full aperture
  • Damage Threshold
    2 MW/cm2
  • Pulse Damage Threshold
    2 J/cm2 with 10 nsec pulses, typical
  • Reflectivity per Surface
    <0.25%
  • Antireflection Coating
    Laser Line V-coating
  • Surface Quality
    10-5 scratch-dig
  • Wedge
    <1 arc sec
  • Thickness Tolerance
    +0/-0.25 mm
  • Cleaning

Features

Zero-Order Quarter-Wave Plate Construction

These zero-order wave plates are constructed of two quartz plates, air-spaced to allow for use with high-power lasers. By combining two wave plates whose retardations differ by exactly λ/4, a true quarter wave plate results. The fast axis of one plate is aligned with the slow axis of the other, so that the net retardation is the difference of the two retardations. We offer zero-order wave plates antireflection coated to maximize transmission for major laser wavelengths from 248–1550 nm. The waveplate assembly is mounted in a 12.7 mm or 25.4 mm diameter black anodized aluminum housing to protect the waveplate and permit convenient handling and mounting. Lines on the housing indicate the direction of the slow axis.

Convert Plane-polarized Light to Circularly Polarized

Quarter-wave waveplates 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 – for example, by orienting an incident plane-polarized wave at 45° to the fast (or slow) axis. On the other side of the waveplate, we again examine the wave at a point where the fast-polarized component is at maximum. At this point, the slow-polarized component will be passing through zero, since it has been retarded by a quarter-wave or 90° in phase. If we move an eighth wavelength farther, we will note that the two are the same magnitude, but the fast component is decreasing and the slow component is increasing. Moving another eighth wave, we find the slow component is at maximum and the fast component is zero. If we trace the tip of the total electric vector, we find it traces out a helix, with a period of just one wavelength. This describes circularly polarized light.

Retardation is Insensitive to Wavelength

Zero-order wave plates offer several distinct advantages over multiple order wave plates. The primary benefit is a moderate insensitivity to wavelength change, making them ideal for laser diode or tunable laser applications. For example, a zero-order wave plate designed for 780 nm will provide useful retardance from 765–795 nm.

Retardation is Sensitive to Incidence Angle

Quartz waveplates are more sensitive to incidence angle than our Polymer waveplates. Polymer waveplates have excellent angular field of view and the retardation changes by less than 1% over a ±12° incidence angle. 

Retardation is Insensitive to Temperature

Retardation in zero-order wave plates is insensitive to temperature since thermal changes between the two quartz plates tend to cancel out. A typical zero-order wave plate has a temperature coefficient of 0.0001 λ/°C compared to 0.0015 λ/°C for a multiple-order wave plate, providing less change in retardation over an extended temperature range.

Designed for High Power Applications

These waveplates' two quartz plates are air-spaced rather than cemented together. As a result, they can be used in high power applications because optical cement can be susceptible to damage when exposed to high intensity laser beams. Additionally, quartz has a higher damage threshold than some other retardation materials such as polymer film.

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.

Mounting Options

Manual Rotation Mounts

POLAR-ROT-MOUNT-FEAT OM-rm25_pol_rot_mnt-S RM25B-OpticsCage-Plus OC1-INTF tip-tilt-family NW_RS4065_POST
Models UPA-RM1A RM25A RM25B OC1-PR M1-1PR
GM-1RA
(M-) RS65
Retaining Thread 1.063-20
Compatible Optic Diameter* 25.4 mm
12.7 mm (PRA-05)
Special Features 1 in. Mirror Mounts Compatibility OpticsCage+™ Compatibility Tip&Tilt Adjustments Fine Adjustments
MT-multi-axis 9401 LH-FIBER-VERT NW_481_POST NW_RSPIT NW_LHIR_SNAP
Models (M-) MT-RS 9401 (-M) (M-) LH-1PR (M-) 481-A
(M-) 481-A-S
RSP-2T
RSP-1T
LM2-R
LM1-R
Retaining Thread 0.546-32 1.040-32 1.035-40 1.063-20 2.063-20
1.063-20
Compatible Optic Diameter* 12.7 mm 25.4 mm 25.4 mm
12.7 mm (PRA-05)
50.8 mm
25.4 mm
12.7 mm (PRA-05)
50.8 mm (LH2-2R)
38.1 mm (LH2-1.5R)
25.4 mm (LH1-1R)
12.7 mm (LH1-0.5R)
6.35 mm (LH1-0.25R)
Special Features Compact Stackable A-Line™ Compatibility Fine Adjustments Quick Exchange

Motorized Rotation Mounts

8410 MT-multi-axis MC-SR50-S 8401
Models 8410 (CONEX-) AG-PR100 (V6) SR50PP
PR50PP
(CONEX-) SR50CC
(CONEX-) PR50CC
8401 (-M)
Retaining Thread 1.040-32 1.063-20 1.563-20
Compatible Optic Diameters* 25.4 mm 25.4 mm
12.7 mm

*The adapter in parentheses is required for the optic size before it.