25.4mm Zero Order Wave Plate by Tower Optical

Tower's Zero Order Waveplates deliver high-performance Crystal Quartz retarders with a 23mm clear aperture. These air-spaced waveplates, featuring a stainless steel spacer between two crystal quartz plates, offer zero-order capability. They're less temperature-sensitive than multi-order waveplates and have superior thermal stability and power handling. Tower Optical's standard 1 waveplates are crafted from Laser quality Crystal Quartz, AR coated on both sides, and available in standard wavelengths with custom options. Specifications include a 0.3 to 2.0mm waveplate thickness range, 10-5 scratch/dig surface quality, and a 1 kW/cm2-CW, 3.5 J/cm2 @10 ns damage threshold. They're offered unmounted (25.4mm diameter) or mounted (30mm diameter, 23mm clear aperture). Custom wavelengths and retardations are available upon request.

• High-Performance Crystal Quartz Retarder: Offers a 23mm clear aperture, air-spaced design with stainless steel spacer, and zero-order capability for reduced temperature sensitivity
• Waveplate Specifications
• Material: Laser-Quality Crystal Quartz
• Waveplate Thickness Range: 0.3 to 2.0 mm
• Wavefront Distortion: /10 @ 632.8nm
• Surface Quality: 10-5 Scratch/Dig
• Parallelism (Wedge): 0.5 arc seconds
• Wavelength Range: As per table
• Retardation Tolerance: 0.005 waves @ 632.8nm
• Coating: Anti-Reflective, R
• Damage Threshold: 1 kW/cm2-CW, 3.5 J/cm2 @10 ns
• Diameter: 25.4mm (unmounted), 30mm (mounted)
• Mounted Thickness: 6.0 mm
• Clear Aperture: 23mm
• Unmounted Diameter: 25.4mm