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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	30.5 mm (1.2")	1240 - 1060920 nm	1 - 2 days	$ 1936.00
Product Code Wavelength Range 1240 - 1060920 nm Center Wavelength 1060 nm 920 - 1240 nm Thickness 12.7 mm (0.5") Retardance λ/4 Clear Aperture 30.5 mm (1.2") Damage Threshold Pulsed 4 J/cm² (20 ns, 1064 nm) 0.6 J/cm² (20 ns) Substrate N-BK7 Mount Non-Threaded Mount 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	-	700 - 1550 nm	In stock	$ 495.00
Product Code Wavelength Range 700 - 1550 nm Coating Uncoated Diameter 12.7 mm (0.5") Dimensions Ø 12.7 mm (0.5") Thickness 0.55 mm Retardance λ/4 Damage Threshold Pulsed 0.3 J/cm², 2 J/cm² (10 ns, 20 ns, 0.5 kW/cm², 532 nm, 1064 nm) Substrate Polymer Shape Round Surface Quality 60-40 scratch-dig Operating Temperature -20 to 40 °C Angle of Incidence 0 - 10° Diameter Tolerance ±0.15 mm Supplier Location New Jersey, USA See product details More from Edmund Optics
Achromatic Quarter Waveplate	λ/4	Ø 17 mm	780 nm	4 - 5 days	$ 270.00
Product Code Wavelength Range 780 nm Center Wavelength 780 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 Damage Threshold Pulsed > 0.5 J/cm² (10 ns, 1064 nm) Substrate Single Crystal Quartz Mount Non-Threaded Mount, 25.4 mm Shape Round Waveplate Order Order 0 Supplier Location Lithuania See product details More from EKSMA Optics
Achromatic Quarter Waveplate	λ/4	Ø 17 mm	343 nm	4 - 5 days	$ 369.00
Product Code Wavelength Range 343 nm Center Wavelength 343 nm Reflectance < 0.5% Dimensions Ø 25.4 mm (1") Parallelism < 10'' Retardance λ/4 Clear Aperture Ø 17 mm Damage Threshold Pulsed > 10 J/cm² (10 ns, 1064 nm) Substrate Single Crystal Quartz Mount Non-Threaded Mount, 25.4 mm 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	40.64 mm (1.6")	835 - 720630 nm	1 - 2 days	$ 3025.00
Product Code Wavelength Range 835 - 720630 nm Center Wavelength 630 - 835 nm 720 nm Thickness 12.7 mm (0.5") Retardance λ/4 Clear Aperture 40.64 mm (1.6") Damage Threshold Pulsed 4 J/cm² (20 ns, 1064 nm) 0.6 J/cm² (20 ns) Substrate N-BK7 Mount Unmounted 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	1550 nm	4 - 5 days	$ 270.00
Product Code Wavelength Range 1550 nm Center Wavelength 1550 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 Damage Threshold Pulsed > 0.5 J/cm² (10 ns, 1064 nm) Substrate Single Crystal Quartz Mount Non-Threaded Mount, 25.4 mm Shape Round Waveplate Order Order 0 Supplier Location Lithuania See product details More from EKSMA Optics
Achromatic Quarter Waveplate	λ/4	Ø 12.7 mm (0.5")	450 - 680 nm (Operating Wavelength)	4 - 5 days	$ 528.00
Product Code Wavelength Range 450 - 680 nm (Operating Wavelength) Center Wavelength 450 - 680 nm Reflectance < 0.8% Parallelism < 1' Retardance λ/4 Clear Aperture Ø 12.7 mm (0.5") Damage Threshold Pulsed > 3 J/cm² (10 ns, 1064 nm) Substrate Magnesium Fluoride Single Crystal Quartz Surface Quality 40-20 scratch-dig Supplier Location Lithuania See product details More from EKSMA Optics
Achromatic Quarter Waveplate	λ/4	Ø 11 mm	355 nm	Contact Supplier	$ 127.00
Product Code Wavelength Range 355 nm Center Wavelength 355 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 Damage Threshold Pulsed 10 J/cm² (10 ns, 1064 nm) Substrate Single Crystal Quartz Mount Unmounted Shape Round Waveplate Order Low Order Supplier Location Lithuania See product details More from EKSMA Optics
Achromatic Quarter Waveplate	λ/4	> 8 mm	900 - 2100 nm	In stock	$ 795.00
Product Code Wavelength Range 900 - 2100 nm Coating BBAR (900 - 2100 nm) Reflectance < 0.75% (900 - 2100 nm, Average) Diameter 12.7 mm (0.5") Dimensions Ø 12.7 mm (0.5") Thickness 6 mm Parallelism < 10'' Retardance λ/4 Clear Aperture > 8 mm Damage Threshold Pulsed > 5 J/cm² (10 ns, 10 Hz, 1064 nm) Substrate Crystalline Quartz Magnesium Fluoride Shape Round Surface Quality 40-20 scratch-dig Transmitted Wavefront Error < λ/4 (632 nm, P-V) Thickness Tolerance ±0.2 mm Coating Features Broadband Supplier Location New Jersey, USA See product details More from Edmund Optics
Achromatic Quarter Waveplate	λ/4	17.7 mm (0.7")	400 - 1800 nm (Center Wavelength)	1 - 2 days	$ 1040.00
Product Code Wavelength Range 400 - 1800 nm (Center Wavelength) Center Wavelength 400 - 1800 nm (Specify at Checkout) Thickness 8.89 mm (0.35") Retardance λ/4 Clear Aperture 17.7 mm (0.7") Damage Threshold Pulsed 4 J/cm² (20 ns, 1064 nm) 0.6 J/cm² (20 ns) Substrate N-BK7 Mount Non-Threaded Mount 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	589 nm	4 - 5 days	$ 270.00
Product Code Wavelength Range 589 nm Center Wavelength 589 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 Damage Threshold Pulsed > 0.5 J/cm² (10 ns, 1064 nm) Substrate Single Crystal Quartz Mount Non-Threaded Mount, 25.4 mm Shape Round Waveplate Order Order 0 Supplier Location Lithuania See product details More from EKSMA Optics
Achromatic Quarter Waveplate	λ/4	Ø 11 mm	1550 nm	Contact Supplier	$ 99.00
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") Parallelism < 10'' Retardance λ/4 Clear Aperture Ø 11 mm Damage Threshold Pulsed 10 J/cm² (10 ns, 1064 nm) Substrate Single Crystal Quartz Mount Unmounted Shape Round Supplier Location Lithuania See product details More from EKSMA Optics
Achromatic Quarter Waveplate	λ/4	> 20 mm	340 - 560 nm	In stock	$ 1015.00
Product Code Wavelength Range 340 - 560 nm Coating BBAR (340 - 560 nm) Reflectance < 0.75% (340 - 560 nm, Average) Diameter 25.4 mm (1") Dimensions Ø 25.4 mm (1") Thickness 6 mm Parallelism < 10'' Retardance λ/4 Clear Aperture > 20 mm Damage Threshold Pulsed > 5 J/cm² (10 ns, 10 Hz, 1064 nm) Substrate Crystalline Quartz Magnesium Fluoride Shape Round Surface Quality 40-20 scratch-dig Transmitted Wavefront Error < λ/4 (632 nm, P-V) Thickness Tolerance ±0.2 mm Coating Features Broadband Supplier Location New Jersey, USA See product details More from Edmund Optics
Achromatic Quarter Waveplate	λ/4	Ø 11 mm	515 nm	4 - 5 days	$ 182.00
Product Code Wavelength Range 515 nm Center Wavelength 515 nm Reflectance < 0.4% Diameter 12.7 mm (0.5") Dimensions Ø 12.7 mm (0.5") Thickness 1.5 - 2.5 mm Parallelism < 10'' Retardance λ/4 Clear Aperture Ø 11 mm Damage Threshold Pulsed > 0.5 J/cm² (10 ns, 1064 nm) Substrate Single Crystal Quartz Mount Unmounted Shape Round Waveplate Order Order 0 Supplier Location Lithuania See product details More from EKSMA Optics
Achromatic Quarter Waveplate	λ/4	10.1 mm (0.4")	1240 - 1060920 nm	1 - 2 days	$ 825.00
Product Code Wavelength Range 1240 - 1060920 nm Center Wavelength 1060 nm 920 - 1240 nm Thickness 3.56 mm (0.14") Retardance λ/4 Clear Aperture 10.1 mm (0.4") Damage Threshold Pulsed 4 J/cm² (20 ns, 1064 nm) 0.6 J/cm² (20 ns) Substrate N-BK7 Mount Unmounted 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 11 mm	1064 nm	4 - 5 days	$ 116.00
Product Code Wavelength Range 1064 nm Center Wavelength 1064 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 Damage Threshold Pulsed 10 J/cm² (10 ns, 1064 nm) Substrate Single Crystal Quartz Mount Unmounted Shape Round Waveplate Order Low Order Supplier Location Lithuania See product details More from EKSMA Optics
Achromatic Quarter Waveplate	λ/4	10.1 mm (0.4")	700 - 630555 nm	1 - 2 days	$ 825.00
Product Code Wavelength Range 700 - 630555 nm Center Wavelength 555 - 700 nm 630 nm Thickness 3.56 mm (0.14") Retardance λ/4 Clear Aperture 10.1 mm (0.4") Damage Threshold Pulsed 4 J/cm² (20 ns, 1064 nm) 0.6 J/cm² (20 ns) Substrate N-BK7 Mount Unmounted 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, λ/2	> 10.16 mm (0.4")	500 - 650 nm	Contact Supplier	Add to cart to request quote
Product Code Wavelength Range 500 - 650 nm Center Wavelength 500 - 650 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	Ø 17 mm	1030 nm	4 - 5 days	$ 176.00
Product Code Wavelength Range 1030 nm Center Wavelength 1030 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 Damage Threshold Pulsed 10 J/cm² (10 ns, 1064 nm) Substrate Single Crystal Quartz Mount Non-Threaded Mount, 25.4 mm Shape Round Waveplate Order Low Order Supplier Location Lithuania See product details More from EKSMA Optics
Achromatic Quarter Waveplate	λ/4	Ø 17 mm	400 nm	4 - 5 days	$ 341.00
Product Code Wavelength Range 400 nm Center Wavelength 400 nm Reflectance < 0.5% Dimensions Ø 25.4 mm (1") Parallelism < 10'' Retardance λ/4 Clear Aperture Ø 17 mm Damage Threshold Pulsed > 10 J/cm² (10 ns, 1064 nm) Substrate Single Crystal Quartz Mount Non-Threaded Mount, 25.4 mm Shape Round Surface Quality 20-10 scratch-dig Waveplate Order Order 0 Supplier Location Lithuania See product details More from EKSMA Optics