◆ Features
Adapted to high-power lasers：Non-bonded air-gap structure, resistant to high-power lasers.
Zero-level wave plate design：The two crystals cancel each other in order, and the temperature stability of the phase difference is excellent.
Adapted wavelength：It is compatible with wavelengths ranging from 257 nm to 1064 nm (fundamental waves and second, third, and fourth harmonics).
Light transmission range：Effective light transmission range: Φ15 mm (circular) or □15 mm (square).
1/2 wave plate：Rotate the polarized light direction of the line.
1/4 wave plate：Realize the conversion between linear polarized light and circular polarized light.
◆ Common Specifications
Material | Crystalline quartz |
Material of Frame | Aluminum (Finishing: Black Anodized) |
Coating | Anti-reflection Coating on both side (Total 4 surfaces) |
Surface Flatness | λ/10 |
Angular Deviation of Beam | ＜5' |
Transmittance | ＞98% |
Surface Quality (Scratch-Dig) | 20-10 |
◆ Applications
Industrial cutting and welding：Polarization state control of fiber lasers and solid-state lasers to prevent thermally induced depolarization of glued waveplates.
Laser research：The circular offset/linear offset conversion in ellipsometers and photoelastographs, or zero-delay scenarios that require temperature stability, such as precise interference experiments.
Medical equipment：Harmonic beam shaping in ultrafast laser medicine takes advantage of the high damage threshold of the air-gap structure.
Optical communication：Polarization mode dispersion compensation.
◇ Wavelength matching：Select the corresponding model based on the actual laser wavelength used.
◇ Polarization conversion requirements：1/2 wave plate：Rotate the polarized light direction of the line. 1/4 wave plate：Realize the conversion between linear polarized light and circular polarized light.
◇ Light transmission shape：Determine the model based on the shape and size of the light spot.
Comparison of wave plate types
types | Air gap wave sheet | Gluing multi-stage wave plates | True zero-order waveplate |
Damage threshold | high（1.4~10 J/cm²） | low（＜5 J/cm²，Prone to thermal damage） | Extremely low（Thin slices are prone to breakage） |
Temperature stability | optimal（Zero-time design，ΔT Impact＜0.1%） | poor（Multi-level accumulation，ΔT Sensitive） | optimal（The thickness is average＜20 μm，Mechanical fragility） |
Bandwidth | Narrow band (single-wavelength design) | Broadband (multi-level compensation) | Ultra-narrow band（±5 nm） |
Cost | Medium (double-piece processing + frame) | Low (single piece) | High (precision gluing + thin sheet process) |
◇ Energy density control：To avoid direct incident of the focused beam (increased risk of damage), it is necessary to calculate that the spot power density is ≤ the threshold.
◇ Strict wavelength matching：A deviation of 1% from the wavelength will affect the phase accuracy. It should be used according to the wavelength indicated on the model.
◇ Mechanical fixation：The frame screws must not be loose to avoid external impact, otherwise it is easy to cause crystal displacement.
◇ Temperature and Angle：Although the zero-time design temperature stability is high, calibration is still required when the incident Angle is greater than 5°.
Type | λ/2 | Material | Crystalline quartz |
Material of frame | Aluminum ( Finishing ; Black Anodized ) | Diameter | ф25.4 |
Coating | Antireflection Coating on both side ( Total 4 surfaces ) | Transmittance | >98% |
Clear aperture | ф15 mm | Theoretical retardation | 128.5 nm |
Wavelength range | 257 nm | Angular Deviation of Beam | ＜5' |
Surface Quality (Scratch-Dig) | 20/10 | Surface flatness of substrate | λ/10 |
Laser Damage Threshold* | 1.4 J/cm²(*Laser pulse width 10 ns, repetition frequency 20 Hz) | Retardation Tolerance | -- |
Type | λ/2 | Material | Crystalline quartz |
Material of frame | Aluminum ( Finishing ; Black Anodized ) | Diameter | ф25.4 |
Coating | Antireflection Coating on both side ( Total 4 surfaces ) | Transmittance | >98% |
Clear aperture | ф15 mm | Theoretical retardation | 171.5 nm |
Wavelength range | 343 nm | Angular Deviation of Beam | ＜5' |
Surface Quality (Scratch-Dig) | 20/10 | Surface flatness of substrate | λ/10 |
Laser Damage Threshold* | 4 J/cm²(*Laser pulse width 10 ns, repetition frequency 20 Hz) | Retardation Tolerance | -- |
Type | λ/2 | Material | Crystalline quartz |
Material of frame | Aluminum ( Finishing ; Black Anodized ) | Diameter | ф25.4 |
Coating | Antireflection Coating on both side ( Total 4 surfaces ) | Transmittance | >98% |
Clear aperture | ф15 mm | Theoretical retardation | 257.5 nm |
Wavelength range | 515 nm | Angular Deviation of Beam | ＜5' |
Surface Quality (Scratch-Dig) | 20/10 | Surface flatness of substrate | λ/10 |
Laser Damage Threshold* | 4 J/cm²(*Laser pulse width 10 ns, repetition frequency 20 Hz) | Retardation Tolerance | -- |
Type | λ/2 | Material | Crystalline quartz |
Material of frame | Aluminum ( Finishing ; Black Anodized ) | Diameter | ф25.4 |
Coating | Antireflection Coating on both side ( Total 4 surfaces ) | Transmittance | >98% |
Clear aperture | ф15 mm | Theoretical retardation | 515 nm |
Wavelength range | 1030 nm | Angular Deviation of Beam | ＜5' |
Surface Quality (Scratch-Dig) | 20/10 | Surface flatness of substrate | λ/10 |
Laser Damage Threshold* | 10 J/cm²(*Laser pulse width 10 ns, repetition frequency 20 Hz) | Retardation Tolerance | -- |
Type | λ/2 | Material | Crystalline quartz |
Material of frame | Aluminum ( Finishing ; Black Anodized ) | Diameter | ф30 |
Coating | Antireflection Coating on both side ( Total 4 surfaces ) | Transmittance | >98% |
Clear aperture | ф15 mm | Theoretical retardation | 128.5 nm |
Wavelength range | 257 nm | Angular Deviation of Beam | ＜5' |
Surface Quality (Scratch-Dig) | 20/10 | Surface flatness of substrate | λ/10 |
Laser Damage Threshold* | 1.4 J/cm²(*Laser pulse width 10 ns, repetition frequency 20 Hz) | Retardation Tolerance | -- |
Type | λ/2 | Material | Crystalline quartz |
Material of frame | Aluminum ( Finishing ; Black Anodized ) | Diameter | ф30 |
Coating | Antireflection Coating on both side ( Total 4 surfaces ) | Transmittance | >98% |
Clear aperture | ф15 mm | Theoretical retardation | 133 nm |
Wavelength range | 266 nm | Angular Deviation of Beam | ＜5' |
Surface Quality (Scratch-Dig) | 20/10 | Surface flatness of substrate | λ/10 |
Laser Damage Threshold* | 1.4 J/cm²(*Laser pulse width 10 ns, repetition frequency 20 Hz) | Retardation Tolerance | <λ/50 |
Type | λ/2 | Material | Crystalline quartz |
Material of frame | Aluminum ( Finishing ; Black Anodized ) | Diameter | ф30 |
Coating | Antireflection Coating on both side ( Total 4 surfaces ) | Transmittance | >98% |
Clear aperture | ф15 mm | Theoretical retardation | 171.5 nm |
Wavelength range | 343 nm | Angular Deviation of Beam | ＜5' |
Surface Quality (Scratch-Dig) | 20/10 | Surface flatness of substrate | λ/10 |
Laser Damage Threshold* | 4 J/cm²(*Laser pulse width 10 ns, repetition frequency 20 Hz) | Retardation Tolerance | -- |
Type | λ/2 | Material | Crystalline quartz |
Material of frame | Aluminum ( Finishing ; Black Anodized ) | Diameter | ф30 |
Coating | Antireflection Coating on both side ( Total 4 surfaces ) | Transmittance | >98% |
Clear aperture | ф15 mm | Theoretical retardation | 177.5 nm |
Wavelength range | 355 nm | Angular Deviation of Beam | ＜5' |
Surface Quality (Scratch-Dig) | 20/10 | Surface flatness of substrate | λ/10 |
Laser Damage Threshold* | 4 J/cm²(*Laser pulse width 10 ns, repetition frequency 20 Hz) | Retardation Tolerance | <λ/50 |
Type | λ/2 | Material | Crystalline quartz |
Material of frame | Aluminum ( Finishing ; Black Anodized ) | Diameter | ф30 |
Coating | Antireflection Coating on both side ( Total 4 surfaces ) | Transmittance | >98% |
Clear aperture | ф15 mm | Theoretical retardation | 257.5 nm |
Wavelength range | 515 nm | Angular Deviation of Beam | ＜5' |
Surface Quality (Scratch-Dig) | 20/10 | Surface flatness of substrate | λ/10 |
Laser Damage Threshold* | 4 J/cm²(*Laser pulse width 10 ns, repetition frequency 20 Hz) | Retardation Tolerance | -- |
Type | λ/2 | Material | Crystalline quartz |
Material of frame | Aluminum ( Finishing ; Black Anodized ) | Diameter | ф30 |
Coating | Antireflection Coating on both side ( Total 4 surfaces ) | Transmittance | >98% |
Clear aperture | ф15 mm | Theoretical retardation | 266 nm |
Wavelength range | 532 nm | Angular Deviation of Beam | ＜5' |
Surface Quality (Scratch-Dig) | 20/10 | Surface flatness of substrate | λ/10 |
Laser Damage Threshold* | 4 J/cm²(*Laser pulse width 10 ns, repetition frequency 20 Hz) | Retardation Tolerance | λ/100~λ/200 |
Type | λ/2 | Material | Crystalline quartz |
Material of frame | Aluminum ( Finishing ; Black Anodized ) | Diameter | ф30 |
Coating | Antireflection Coating on both side ( Total 4 surfaces ) | Transmittance | >98% |
Clear aperture | ф15 mm | Theoretical retardation | 515 nm |
Wavelength range | 1030 nm | Angular Deviation of Beam | ＜5' |
Surface Quality (Scratch-Dig) | 20/10 | Surface flatness of substrate | λ/10 |
Laser Damage Threshold* | 10 J/cm²(*Laser pulse width 10 ns, repetition frequency 20 Hz) | Retardation Tolerance | -- |
Type | λ/2 | Material | Crystalline quartz |
Material of frame | Aluminum ( Finishing ; Black Anodized ) | Diameter | ф30 |
Coating | Antireflection Coating on both side ( Total 4 surfaces ) | Transmittance | >98% |
Clear aperture | ф15 mm | Theoretical retardation | 532 nm |
Wavelength range | 1064 nm | Angular Deviation of Beam | ＜5′ |
Surface Quality (Scratch-Dig) | 20/10 | Surface flatness of substrate | λ/10 |
Laser Damage Threshold* | 7 J/cm²(*Laser pulse width 10 ns, repetition frequency 20 Hz) | Retardation Tolerance | λ/200~λ/500 |
Type | λ/4 | Material | Crystalline quartz |
Material of frame | Aluminum ( Finishing ; Black Anodized ) | Diameter | ф25.4 |
Coating | Antireflection Coating on both side ( Total 4 surfaces ) | Transmittance | >98% |
Clear aperture | ф15 mm | Theoretical retardation | 64.4 nm |
Wavelength range | 257 nm | Angular Deviation of Beam | ＜5′ |
Surface Quality (Scratch-Dig) | 20/10 | Surface flatness of substrate | λ/10 |
Laser Damage Threshold* | 1.4 J/cm²(*Laser pulse width 10 ns, repetition frequency 20 Hz) | Retardation Tolerance | -- |
Type | λ/4 | Material | Crystalline quartz |
Material of frame | Aluminum ( Finishing ; Black Anodized ) | Diameter | ф25.4 |
Coating | Antireflection Coating on both side ( Total 4 surfaces ) | Transmittance | >98% |
Clear aperture | ф15 mm | Theoretical retardation | 128.5 nm |
Wavelength range | 343 nm | Angular Deviation of Beam | ＜5′ |
Surface Quality (Scratch-Dig) | 20/10 | Surface flatness of substrate | λ/10 |
Laser Damage Threshold* | 4 J/cm²(*Laser pulse width 10 ns, repetition frequency 20 Hz) | Retardation Tolerance | -- |
Type | λ/4 | Material | Crystalline quartz |
Material of frame | Aluminum ( Finishing ; Black Anodized ) | Diameter | ф25.4 |
Coating | Antireflection Coating on both side ( Total 4 surfaces ) | Transmittance | >98% |
Clear aperture | ф15 mm | Theoretical retardation | 171.5 nm |
Wavelength range | 515 nm | Angular Deviation of Beam | ＜5′ |
Surface Quality (Scratch-Dig) | 20/10 | Surface flatness of substrate | λ/10 |
Laser Damage Threshold* | 4 J/cm²(*Laser pulse width 10 ns, repetition frequency 20 Hz) | Retardation Tolerance | -- |
Type | λ/4 | Material | Crystalline quartz |
Material of frame | Aluminum ( Finishing ; Black Anodized ) | Diameter | ф25.4 |
Coating | Antireflection Coating on both side ( Total 4 surfaces ) | Transmittance | >98% |
Clear aperture | ф15 mm | Theoretical retardation | 257.5 nm |
Wavelength range | 1030 nm | Angular Deviation of Beam | ＜5′ |
Surface Quality (Scratch-Dig) | 20/10 | Surface flatness of substrate | λ/10 |
Laser Damage Threshold* | 10 J/cm²(*Laser pulse width 10 ns, repetition frequency 20 Hz) | Retardation Tolerance | -- |
Type | λ/4 | Material | Crystalline quartz |
Material of frame | Aluminum ( Finishing ; Black Anodized ) | Diameter | ф30 |
Coating | Antireflection Coating on both side ( Total 4 surfaces ) | Transmittance | >98% |
Clear aperture | ф15 mm | Theoretical retardation | 64.4 nm |
Wavelength range | 257 nm | Angular Deviation of Beam | ＜5′ |
Surface Quality (Scratch-Dig) | 20/10 | Surface flatness of substrate | λ/10 |
Laser Damage Threshold* | 1.4 J/cm²(*Laser pulse width 10 ns, repetition frequency 20 Hz) | Retardation Tolerance | -- |
Type | λ/4 | Material | Crystalline quartz |
Material of frame | Aluminum ( Finishing ; Black Anodized ) | Diameter | ф30 |
Coating | Antireflection Coating on both side ( Total 4 surfaces ) | Transmittance | >98% |
Clear aperture | ф15 mm | Theoretical retardation | 66.5 nm |
Wavelength range | 266 nm | Angular Deviation of Beam | ＜5′ |
Surface Quality (Scratch-Dig) | 20/10 | Surface flatness of substrate | λ/10 |
Laser Damage Threshold* | 1.4 J/cm²(*Laser pulse width 10 ns, repetition frequency 20 Hz) | Retardation Tolerance | <λ/50 |
Type | λ/4 | Material | Crystalline quartz |
Material of frame | Aluminum ( Finishing ; Black Anodized ) | Diameter | ф30 |
Coating | Antireflection Coating on both side ( Total 4 surfaces ) | Transmittance | >98% |
Clear aperture | ф15 mm | Theoretical retardation | 128.5 nm |
Wavelength range | 343 nm | Angular Deviation of Beam | ＜5′ |
Surface Quality (Scratch-Dig) | 20/10 | Surface flatness of substrate | λ/10 |
Laser Damage Threshold* | 4 J/cm²(*Laser pulse width 10 ns, repetition frequency 20 Hz) | Retardation Tolerance | -- |
Type | λ/4 | Material | Crystalline quartz |
Material of frame | Aluminum ( Finishing ; Black Anodized ) | Diameter | ф30 |
Coating | Antireflection Coating on both side ( Total 4 surfaces ) | Transmittance | >98% |
Clear aperture | ф15 mm | Theoretical retardation | 88.8 nm |
Wavelength range | 355 nm | Angular Deviation of Beam | ＜5′ |
Surface Quality (Scratch-Dig) | 20/10 | Surface flatness of substrate | λ/10 |
Laser Damage Threshold* | 4 J/cm²(*Laser pulse width 10 ns, repetition frequency 20 Hz) | Retardation Tolerance | <λ/50 |
Type | λ/4 | Material | Crystalline quartz |
Material of frame | Aluminum ( Finishing ; Black Anodized ) | Diameter | ф30 |
Coating | Antireflection Coating on both side ( Total 4 surfaces ) | Transmittance | >98% |
Clear aperture | ф15 mm | Theoretical retardation | 171.5 nm |
Wavelength range | 515 nm | Angular Deviation of Beam | ＜5′ |
Surface Quality (Scratch-Dig) | 20/10 | Surface flatness of substrate | λ/10 |
Laser Damage Threshold* | 4 J/cm²(*Laser pulse width 10 ns, repetition frequency 20 Hz) | Retardation Tolerance | -- |
Type | λ/4 | Material | Crystalline quartz |
Material of frame | Aluminum ( Finishing ; Black Anodized ) | Diameter | ф30 |
Coating | Antireflection Coating on both side ( Total 4 surfaces ) | Transmittance | >98% |
Clear aperture | ф15 mm | Theoretical retardation | 133.0 nm |
Wavelength range | 532 nm | Angular Deviation of Beam | ＜5′ |
Surface Quality (Scratch-Dig) | 20/10 | Surface flatness of substrate | λ/10 |
Laser Damage Threshold* | 4 J/cm²(*Laser pulse width 10 ns, repetition frequency 20 Hz) | Retardation Tolerance | λ/100~λ/200 |
Type | λ/4 | Material | Crystalline quartz |
Material of frame | Aluminum ( Finishing ; Black Anodized ) | Diameter | ф30 |
Coating | Antireflection Coating on both side ( Total 4 surfaces ) | Transmittance | >98% |
Clear aperture | ф15 mm | Theoretical retardation | 257.5 nm |
Wavelength range | 1030 nm | Angular Deviation of Beam | ＜5′ |
Surface Quality (Scratch-Dig) | 20/10 | Surface flatness of substrate | λ/10 |
Laser Damage Threshold* | 10 J/cm²(*Laser pulse width 10 ns, repetition frequency 20 Hz) | Retardation Tolerance | -- |
Type | λ/4 | Material | Crystalline quartz |
Material of frame | Aluminum ( Finishing ; Black Anodized ) | Diameter | ф30 |
Coating | Antireflection Coating on both side ( Total 4 surfaces ) | Transmittance | >98% |
Clear aperture | ф15 mm | Theoretical retardation | 266.0 nm |
Wavelength range | 1064 nm | Angular Deviation of Beam | ＜5′ |
Surface Quality (Scratch-Dig) | 20/10 | Surface flatness of substrate | λ/10 |
Laser Damage Threshold* | 7 J/cm²(*Laser pulse width 10 ns, repetition frequency 20 Hz) | Retardation Tolerance | λ/200~λ/500 |
Air Gap Type Waveplate
