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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 Half Waveplate	λ/2	Ø 22.6 mm (0.89")	350 - 850 nm (Coating Range)	In stock	$ 1059.22
Product Code Wavelength Range 350 - 850 nm (Coating Range) Reflectance < 1% (350 - 850 nm, Average, per Surface) Diameter 25.4 mm (1") 30.5 mm (1.2", Mounted) 25.4 mm (1", Unmounted) Dimensions Ø 25.4 mm (1") Thickness 6.1 mm (0.24", Mount) Retardance λ/2 Clear Aperture Ø 22.6 mm (0.89") Substrate Crystalline Quartz Sapphire Mount Threaded Mount, SM, SM1 Shape Round Surface Quality 20-10 scratch-dig Transmitted Wavefront Error < λ/4 (633 nm, RMS) Beam Deviation < 10'' Retardance Accuracy < λ/300 (633 nm) Angle of Incidence 0° Diameter Tolerance ±0.2 mm (0.008") Supplier Location New Jersey, USA See product details More from Thorlabs
Achromatic Half Waveplate	λ/2	Ø 17 mm	950 nm	4 - 5 days	$ 270.00
Product Code Wavelength Range 950 nm Center Wavelength 950 nm Reflectance < 0.4% Diameter 20 mm Dimensions Ø 20 mm Thickness 1.5 - 2.5 mm Parallelism < 10'' Retardance λ/2 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 Half Waveplate	λ/2	40.64 mm (1.6")	985 - 840735 nm	1 - 2 days	$ 3025.00
Product Code Wavelength Range 985 - 840735 nm Center Wavelength 735 - 985 nm 840 nm Thickness 12.7 mm (0.5") Retardance λ/2 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' Retardance Accuracy < λ/100 Damage Threshold CW 0.5 kW/cm² Operating Temperature 20 - 50 °C Key Features Broad Spectral Range Superior Field of View Thermally Stable Retarder Material Polymer Supplier Location Colorado, USA See product details More from Meadowlark
Achromatic Half Waveplate	λ/2	Ø 17 mm	1550 nm	Contact Supplier	$ 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/2 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 Half Waveplate	λ/2	Ø 4 mm	700 - 1200 nm (Coating Range)	2 weeks	$ 484.16
Product Code Wavelength Range 700 - 1200 nm (Coating Range) Retardance λ/2 Clear Aperture Ø 4 mm Damage Threshold Pulsed 0.432 J/cm² (0.178 mm, 180 fs, 1 kHz, 797 nm) 5 J/cm² (0.157 mm, 10 ns, 10 Hz, 810 nm) Substrate Crystalline Quartz Magnesium Fluoride Surface Quality 20-10 scratch-dig Transmitted Wavefront Error λ/8 (633 nm) Beam Deviation < 10'' Retardance Accuracy λ/55 Supplier Location New Jersey, USA See product details More from Thorlabs
Achromatic Half Waveplate	λ/2	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/2 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 Half Waveplate	λ/2	Ø 11 mm	515 nm	Contact Supplier	$ 99.00
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") Parallelism < 10'' Retardance λ/2 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 Half Waveplate	λ/2	Ø 17 mm	1064 nm	4 - 5 days	$ 152.00
Product Code Wavelength Range 1064 nm Center Wavelength 1064 nm Reflectance < 0.4% Diameter 20 mm Dimensions Ø 20 mm Parallelism < 10'' Retardance λ/2 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 Supplier Location Lithuania See product details More from EKSMA Optics
Achromatic Half Waveplate	λ/2	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/2 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 Non-Threaded Mount Surface Quality 40-20 scratch-dig Transmitted Wavefront Error < λ/4 Beam Deviation < 1' Retardance Accuracy < λ/100 Damage Threshold CW 0.5 kW/cm² Operating Temperature 20 - 50 °C Key Features Broad Spectral Range Superior Field of View Thermally Stable Retarder Material Polymer Supplier Location Colorado, USA See product details More from Meadowlark
Achromatic Half Waveplate	λ/2	Ø 17 mm	400 nm	4 - 5 days	$ 176.00
Product Code Wavelength Range 400 nm Center Wavelength 400 nm Reflectance < 0.4% Diameter 20 mm Dimensions Ø 20 mm Thickness 0.15 - 0.35 mm Parallelism < 10'' Retardance λ/2 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 Half Waveplate	λ/2	Ø 17 mm	1064 nm	4 - 5 days	$ 341.00
Product Code Wavelength Range 1064 nm Center Wavelength 1064 nm Reflectance < 0.5% Dimensions Ø 25.4 mm (1") Parallelism < 10'' Retardance λ/2 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 Half Waveplate	λ/2	Ø 17 mm	266 nm	4 - 5 days	$ 168.00
Product Code Wavelength Range 266 nm Center Wavelength 266 nm Reflectance < 0.4% Diameter 20 mm Dimensions Ø 20 mm Parallelism < 10'' Retardance λ/2 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 Supplier Location Lithuania See product details More from EKSMA Optics
Achromatic Half Waveplate	λ/2	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/2 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 Half Waveplate	λ/2	Ø 17 mm	780 nm	4 - 5 days	$ 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/2 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 Half Waveplate	λ/2	Ø 17 mm	800 nm	Contact Supplier	$ 152.00
Product Code Wavelength Range 800 nm Center Wavelength 800 nm Reflectance < 0.4% Diameter 20 mm Dimensions Ø 20 mm Parallelism < 10'' Retardance λ/2 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 Supplier Location Lithuania See product details More from EKSMA Optics
Achromatic Half Waveplate	λ/2	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/2 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 Half Waveplate	λ/2	Ø 11 mm	852 nm	4 - 5 days	$ 182.00
Product Code Wavelength Range 852 nm Center Wavelength 852 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/2 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 Half Waveplate	λ/2	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/2 Clear Aperture Ø 40 mm Damage Threshold Pulsed > 10 J/cm² (10 ns, 1064 nm) Substrate Single Crystal Quartz Mount Non-Threaded Mount, 50.8 mm Shape Round Surface Quality 20-10 scratch-dig Waveplate Order Order 0 Supplier Location Lithuania See product details More from EKSMA Optics
Achromatic Half Waveplate	λ/2	> 20 mm	650 - 1100 nm	Contact Supplier	$ 1015.00
Product Code Wavelength Range 650 - 1100 nm Coating BBAR (650 - 1100 nm) Reflectance < 0.75% (650 - 1100 nm, Average) Diameter 25.4 mm (1") Dimensions Ø 25.4 mm (1") Thickness 6 mm Parallelism < 10'' Retardance λ/2 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 Half Waveplate	λ/2	17.7 mm (0.7")	1240 - 1060920 nm	1 - 2 days	$ 1040.00
Product Code Wavelength Range 1240 - 1060920 nm Center Wavelength 1060 nm 920 - 1240 nm Thickness 8.89 mm (0.35") Retardance λ/2 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' Retardance Accuracy < λ/100 Damage Threshold CW 0.5 kW/cm² Operating Temperature 20 - 50 °C Key Features Broad Spectral Range Superior Field of View Thermally Stable Retarder Material Polymer Supplier Location Colorado, USA See product details More from Meadowlark