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Transparent optical plates made by birefringent materials that are mostly used for altering the polarization state of light beams by retarding one polarization component. Learn More

Product	Retardance	Clear Aperture	Wavelength Range	Availability	Price (USD)
Achromatic Quarter Waveplate	λ/4	Ø 11 mm	800 nm	4 - 5 days	$ 116.00
Product Code Wavelength Range 800 nm Center Wavelength 800 nm Reflectance < 0.4% Diameter 12.7 mm (0.5") Dimensions Ø 12.7 mm (0.5") Thickness 0.15 - 0.35 mm Parallelism < 10'' Retardance λ/4 Clear Aperture Ø 11 mm Mount Unmounted Damage Threshold Pulsed 10 J/cm² (10 ns, 1064 nm) Substrate Single Crystal Quartz Shape Round Waveplate Order Low Order Supplier Location Lithuania See product details More from EKSMA Optics
Achromatic Quarter Waveplate	λ/4	Ø 17 mm	515 nm	Contact Supplier	$ 152.00
Product Code Wavelength Range 515 nm Center Wavelength 515 nm Reflectance < 0.4% Diameter 20 mm Dimensions Ø 20 mm Parallelism < 10'' Retardance λ/4 Clear Aperture Ø 17 mm Mount Non-Threaded Mount, 25.4 mm Damage Threshold Pulsed 10 J/cm² (10 ns, 1064 nm) Substrate Single Crystal Quartz Shape Round Supplier Location Lithuania See product details More from EKSMA Optics
Achromatic Quarter Waveplate	λ/4	Ø 11 mm	633 nm	4 - 5 days	$ 99.00
Product Code Wavelength Range 633 nm Center Wavelength 633 nm Reflectance < 0.4% Diameter 12.7 mm (0.5") Dimensions Ø 12.7 mm (0.5") Parallelism < 10'' Retardance λ/4 Clear Aperture Ø 11 mm Mount Unmounted Damage Threshold Pulsed 10 J/cm² (10 ns, 1064 nm) Substrate Single Crystal Quartz Shape Round Supplier Location Lithuania See product details More from EKSMA Optics
Achromatic Quarter Waveplate	λ/4	-	325 - 1100 nm	2 weeks	$ 3159.45
Product Code Wavelength Range 325 - 1100 nm Dimensions Ø 25.4 mm (1") Retardance λ/4 Mount Non-Threaded Mount, 1" Shape Round Supplier Location New Jersey, USA See product details More from Thorlabs
Achromatic Quarter Waveplate	λ/4	Ø 17 mm	1030 nm	4 - 5 days	$ 270.00
Product Code Wavelength Range 1030 nm Center Wavelength 1030 nm Reflectance < 0.4% Diameter 20 mm Dimensions Ø 20 mm Thickness 1.5 - 2.5 mm Parallelism < 10'' Retardance λ/4 Clear Aperture Ø 17 mm Mount Non-Threaded Mount, 25.4 mm Damage Threshold Pulsed > 0.5 J/cm² (10 ns, 1064 nm) Substrate Single Crystal Quartz Shape Round Waveplate Order Order 0 Supplier Location Lithuania See product details More from EKSMA Optics
Achromatic Quarter Waveplate	λ/4	Ø 17 mm	257 nm	4 - 5 days	$ 308.00
Product Code Wavelength Range 257 nm Center Wavelength 257 nm Reflectance < 0.4% Diameter 20 mm Dimensions Ø 20 mm Thickness 1.5 - 2.5 mm Parallelism < 10'' Retardance λ/4 Clear Aperture Ø 17 mm Mount Non-Threaded Mount, 25.4 mm Damage Threshold Pulsed > 0.5 J/cm² (10 ns, 1064 nm) Substrate Single Crystal Quartz Shape Round Waveplate Order Order 0 Supplier Location Lithuania See product details More from EKSMA Optics
Achromatic Quarter Waveplate	λ/4, λ/2	> 10.16 mm (0.4")	690 - 2050 nm	Contact Supplier	Add to cart to request quote
Product Code Wavelength Range 690 - 2050 nm Center Wavelength 690 - 2050 nm Reflectance < 0.5% (Normal Incidence, per Surface) Retardance λ/4, λ/2 Clear Aperture > 10.16 mm (0.4") Mount Non-Threaded Mount Surface Quality 40-20 scratch-dig Transmitted Wavefront Error < λ/4 Beam Deviation < 1' Key Features High Power Handling Retarder Material Magnesium Fluoride Quartz Supplier Location Colorado, USA See product details More from Meadowlark
Achromatic Quarter Waveplate	λ/4, λ/2	> 10.16 mm (0.4")	600 - 840 nm	Contact Supplier	Add to cart to request quote
Product Code Wavelength Range 600 - 840 nm Center Wavelength 600 - 840 nm Reflectance < 0.5% (Normal Incidence, per Surface) Retardance λ/4, λ/2 Clear Aperture > 10.16 mm (0.4") Mount Non-Threaded Mount Surface Quality 40-20 scratch-dig Transmitted Wavefront Error < λ/4 Beam Deviation < 1' Key Features High Power Handling Retarder Material Magnesium Fluoride Quartz Supplier Location Colorado, USA See product details More from Meadowlark
Achromatic Quarter Waveplate	λ/4	10.1 mm (0.4")	1200 - 1650 nm	1 - 2 days	$ 919.00
Product Code Wavelength Range 1200 - 1650 nm Center Wavelength 1200 - 1650 nm 1400 nm Thickness 6.35 mm (0.25") Retardance λ/4 Clear Aperture 10.1 mm (0.4") Mount Non-Threaded Mount Damage Threshold Pulsed 4 J/cm² (20 ns, 1064 nm) 0.6 J/cm² (20 ns) Substrate N-BK7 Surface Quality 40-20 scratch-dig Transmitted Wavefront Error < λ/4 Beam Deviation < 1' Key Features Broad Spectral Range Superior Field of View Thermally Stable Retarder Material Polymer Retardance Accuracy < λ/100 Damage Threshold CW 0.5 kW/cm² Operating Temperature 20 - 50 °C Supplier Location Colorado, USA See product details More from Meadowlark
Achromatic Quarter Waveplate	λ/4	Ø 17 mm	488 nm	4 - 5 days	$ 270.00
Product Code Wavelength Range 488 nm Center Wavelength 488 nm Reflectance < 0.4% Diameter 20 mm Dimensions Ø 20 mm Thickness 1.5 - 2.5 mm Parallelism < 10'' Retardance λ/4 Clear Aperture Ø 17 mm Mount Non-Threaded Mount, 25.4 mm Damage Threshold Pulsed > 0.5 J/cm² (10 ns, 1064 nm) Substrate Single Crystal Quartz Shape Round Waveplate Order Order 0 Supplier Location Lithuania See product details More from EKSMA Optics
Achromatic Quarter Waveplate	λ/4	Ø 10 mm (0.39")	350 - 850 nm (Coating Range)	In stock	$ 952.12
Product Code Wavelength Range 350 - 850 nm (Coating Range) Reflectance < 1% (350 - 850 nm, Average, per Surface) Diameter 12.7 mm (0.5") 25.4 mm (1", Mounted) 12.7 mm (Unmounted) Dimensions Ø 12.7 mm (0.5") Thickness 3.2 mm (Mount) Retardance λ/4 Clear Aperture Ø 10 mm (0.39") Mount Non-Threaded Mount, 1" Substrate Crystalline Quartz Sapphire Shape Round Surface Quality 20-10 scratch-dig Transmitted Wavefront Error < λ/8 (633 nm, RMS) Beam Deviation < 10'' Retardance Accuracy < λ/300 (633 nm) Angle of Incidence 0° Diameter Tolerance ±0.1 mm Supplier Location New Jersey, USA See product details More from Thorlabs
Achromatic Quarter Waveplate	λ/4	30.5 mm (1.2")	630 - 545485 nm	1 - 2 days	$ 1936.00
Product Code Wavelength Range 630 - 545485 nm Center Wavelength 485 - 630 nm 545 nm Thickness 12.7 mm (0.5") Retardance λ/4 Clear Aperture 30.5 mm (1.2") Mount Non-Threaded Mount Damage Threshold Pulsed 4 J/cm² (20 ns, 1064 nm) 0.6 J/cm² (20 ns) Substrate N-BK7 Surface Quality 40-20 scratch-dig Transmitted Wavefront Error < λ/4 Beam Deviation < 1' Key Features Broad Spectral Range Superior Field of View Thermally Stable Retarder Material Polymer Retardance Accuracy < λ/100 Damage Threshold CW 0.5 kW/cm² Operating Temperature 20 - 50 °C Supplier Location Colorado, USA See product details More from Meadowlark
Achromatic Quarter Waveplate	λ/4	Ø 40 mm	800 nm	Contact Supplier	$ 1045.00
Product Code Wavelength Range 800 nm Center Wavelength 800 nm Reflectance < 0.5% Dimensions Ø 50.8 mm (2") Parallelism < 10'' Retardance λ/4 Clear Aperture Ø 40 mm Mount Non-Threaded Mount, 50.8 mm Damage Threshold Pulsed > 10 J/cm² (10 ns, 1064 nm) Substrate Single Crystal Quartz Shape Round Surface Quality 20-10 scratch-dig Waveplate Order Order 0 Supplier Location Lithuania See product details More from EKSMA Optics
Achromatic Quarter Waveplate	λ/4	Ø 17 mm	780 nm	Contact Supplier	$ 176.00
Product Code Wavelength Range 780 nm Center Wavelength 780 nm Reflectance < 0.4% Diameter 20 mm Dimensions Ø 20 mm Thickness 0.15 - 0.35 mm Parallelism < 10'' Retardance λ/4 Clear Aperture Ø 17 mm Mount Non-Threaded Mount, 25.4 mm Damage Threshold Pulsed 10 J/cm² (10 ns, 1064 nm) Substrate Single Crystal Quartz Shape Round Waveplate Order Low Order Supplier Location Lithuania See product details More from EKSMA Optics
Achromatic Quarter Waveplate	λ/4	10.16 mm	630 - 835 nm	In stock	$ 1145.00
Product Code Wavelength Range 630 - 835 nm Reflectance 0.5% (0.5 kW/cm²) Diameter 25.4 mm (1") Dimensions Ø 25.4 mm (1") Thickness 6.35 mm (0.25", Mount) Retardance λ/4 Clear Aperture 10.16 mm Damage Threshold Pulsed 0.3 J/cm² (10 ns, 1064 nm) 0.5 J/cm² (10 ns) Substrate N-BK7 Shape Round Surface Quality 40-20 scratch-dig Transmitted Wavefront Error λ/4 (632.8 nm, P-V) Beam Deviation 1' Damage Threshold CW 0.5 kW/cm² Operating Temperature -20 to 50 °C Thickness Tolerance ±0.508 mm Supplier Location New Jersey, USA See product details More from Edmund Optics
Achromatic Quarter Waveplate	λ/4	Ø 11 mm	1550 nm	4 - 5 days	$ 116.00
Product Code Wavelength Range 1550 nm Center Wavelength 1550 nm Reflectance < 0.4% Diameter 12.7 mm (0.5") Dimensions Ø 12.7 mm (0.5") Thickness 0.15 - 0.35 mm Parallelism < 10'' Retardance λ/4 Clear Aperture Ø 11 mm Mount Unmounted Damage Threshold Pulsed 10 J/cm² (10 ns, 1064 nm) Substrate Single Crystal Quartz Shape Round Waveplate Order Low Order Supplier Location Lithuania See product details More from EKSMA Optics
Achromatic Quarter Waveplate	λ/4	Ø 11 mm	1053 nm	4 - 5 days	$ 116.00
Product Code Wavelength Range 1053 nm Center Wavelength 1053 nm Reflectance < 0.4% Diameter 12.7 mm (0.5") Dimensions Ø 12.7 mm (0.5") Thickness 0.15 - 0.35 mm Parallelism < 10'' Retardance λ/4 Clear Aperture Ø 11 mm Mount Unmounted Damage Threshold Pulsed 10 J/cm² (10 ns, 1064 nm) Substrate Single Crystal Quartz Shape Round Waveplate Order Low Order Supplier Location Lithuania See product details More from EKSMA Optics
Achromatic Quarter Waveplate	λ/4	Ø 17 mm	1550 nm	4 - 5 days	$ 341.00
Product Code Wavelength Range 1550 nm Center Wavelength 1550 nm Reflectance < 0.5% Dimensions Ø 25.4 mm (1") Parallelism < 10'' Retardance λ/4 Clear Aperture Ø 17 mm Mount Non-Threaded Mount, 25.4 mm Damage Threshold Pulsed > 10 J/cm² (10 ns, 1064 nm) Substrate Single Crystal Quartz Shape Round Surface Quality 20-10 scratch-dig Waveplate Order Order 0 Supplier Location Lithuania See product details More from EKSMA Optics
Achromatic Quarter Waveplate	λ/4, λ/2	> 10.16 mm (0.4")	600 - 900 nm	Contact Supplier	Add to cart to request quote
Product Code Wavelength Range 600 - 900 nm Center Wavelength 600 - 900 nm Reflectance < 0.5% (Normal Incidence, per Surface) Retardance λ/4, λ/2 Clear Aperture > 10.16 mm (0.4") Mount Unmounted Surface Quality 40-20 scratch-dig Transmitted Wavefront Error < λ/4 Beam Deviation < 1' Key Features High Power Handling Retarder Material Magnesium Fluoride Quartz Supplier Location Colorado, USA See product details More from Meadowlark
Achromatic Quarter Waveplate	λ/4	Ø 17 mm	515 nm	4 - 5 days	$ 270.00
Product Code Wavelength Range 515 nm Center Wavelength 515 nm Reflectance < 0.4% Diameter 20 mm Dimensions Ø 20 mm Thickness 1.5 - 2.5 mm Parallelism < 10'' Retardance λ/4 Clear Aperture Ø 17 mm Mount Non-Threaded Mount, 25.4 mm Damage Threshold Pulsed > 0.5 J/cm² (10 ns, 1064 nm) Substrate Single Crystal Quartz Shape Round Waveplate Order Order 0 Supplier Location Lithuania See product details More from EKSMA Optics