Zero order · crystal quartz

Zero Order Waveplate — 10 mm

Tower's 10 mm zero-order waveplate is a high-performance crystal quartz retarder with an 8 mm clear aperture. Two laser-quality quartz plates are air-spaced on a stainless steel spacer, which makes the retardation far less sensitive to temperature than a cemented or contacted plate — and there is no risk of the plates separating in service. Each face is AR-coated (R < 0.25% per surface). Standard retardations are ½ and ¼ wave; the plate is available unmounted (10 mm) or in a 12.7 mm / 25.4 mm anodized aluminum ring. A High Laser Damage (HLD) version is now available across the entire zero-order and multiple-order waveplate line — thousands in stock for immediate delivery, with 3" and 4" diameters, square, rectangular and dual-wavelength options on request.

Specifications

Material

Crystal quartz, laser grade

Clear aperture

8 mm

Diameter

10 mm unmounted · 12.7 / 25.4 mm mounted

Wavefront distortion

λ/10 @ 632.8 nm

Surface quality

10-5 scratch/dig

Parallelism (wedge)

0.5 arc sec

Wavelength range

237–2021 nm

Retardation tolerance

±0.005 waves @ 632.8 nm

Coating

AR, R < 0.25% per surface

Laser damage threshold

1 kW/cm² CW · 3.5 J/cm² @ 10 ns

HLD option

High Laser Damage version available

Standard wavelengths (nm)

237 248 266 308 325 355 399 405 408 413 423 442 458 488 515 532 556 589 633 647 650 660 670 676 694 710 767 780 800 808 820 830 850 905 946 980 1050 1064 1112 1315 1550 1762 1988 2021