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Achromatic Waveplate, Half-Wave, Quartz-MgF2, 25.4 mm, 400-700 nm
In Stock
In Stock
Achromatic Waveplate, Half-Wave, Quartz-MgF2, 25.4 mm, 700-1000 nm
In Stock
In Stock
Achromatic Waveplate, Half-Wave, Quartz-MgF2, 25.4 mm, 1000-1600 nm
In Stock
In Stock


  • Retardation
  • Retardation Accuracy
  • Material
    Air Spaced Crystal Quartz and MgF2
  • Diameter
    25.4 mm
  • Housing
    Black anodized aluminum
  • Clear Aperture
    18 mm
  • Antireflection Coating
    Broadband, multilayer coating
  • Average Reflectance
  • Pulse Damage Threshold
    5 J/cm2 with 10 nsec pulses at 1064 nm
  • Surface Quality
    40-20 scratch-dig
  • Surface Flatness
  • Transmitted Beam Deviation
    ≤1 arc min
  • Wavefront Distortion
    ≤λ/8 at 632.8 nm over the clear aperture
  • Diameter Tolerance
    ±0.13 mm
  • Thickness
    9.4 mm
  • Operating Temperature Range
    -20 to 50°C


High Retardation Accuracy Over Broad Wavelength

Achromatic Quartz-MgF2 Zero-Order Wave Plates provide a much higher degree of retardation accuracy than regular zero-order quartz wave plates. Achromatic Quartz-MgF2 Wave Plates operate over a broad wavelength range, compared to the single wavelength performance of zero-order quartz wave plates. For specific retardation accuracy performance, please visit the 10RP52-1B, 10RP52-2B or 10RP52-3B product pages.

Black Anodized Aluminum Housing

The assembly is mounted in a 25.4 mm or black anodized aluminum housing for protection and ease of mounting, with the retarder fast axis marked for alignment reference. The standard 25.4 mm outer diameter is convenient for mounting into Newport rotary mounts. The 18 mm large clear aperture makes it ideal for ultrafast applications.

High Damage Threshold From Air-spaced Design

Achromatic Quartz-MgF2 Zero-Order Wave Plates consist of crystalline quartz and magnesium fluoride (MgF2) crystals, each with a highly efficient broadband antireflection coating, in an air-spaced design. This construction ensures excellent transmitted wavefront quality, while minimizing beam deviation and surface reflection losses. Because of the air-space design, our Achromatic Quartz-MgF2 Wave Plates provide a pulse damage threshold of 5 J/cm2 with 10 nsec pulses at 1064 nm, which is much higher than that of achromatic polymer film wave plates.

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
(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
Models (M-) MT-RS 9401 (-M) (M-) LH-1PR (M-) 481-A
(M-) 481-A-S
Retaining Thread 0.546-32 1.040-32 1.035-40 1.063-20 2.063-20
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
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.