High-Precision λ/2 Wave Plate Control Polarization Rotation
The λ/2 waveplate is a high-precision birefringent optical component that achieves rotation along the polarization direction of linearly polarized light by introducing a 180° phase delay between the fast and slow axes without changing the intensity or coherence of the beam.
Features
- Precise phase delay of 180° and high polarization rotation accuracy
- High transmittance and low absorption coating, suitable for laser and scientific research optical path systems
- Extremely low wavefront distortion (≤λ/8) to keep beam quality unaffected
- Wide band available: Available in single-wavelength, dual-wavelength, and wideband versions
- High laser damage threshold (>10 J/cm²) to support high-power lasers
- Optional standard and zero-order wave pads
- Strong environmental resistance, suitable for laboratory and industrial equipment
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Hobbite’s λ/2 wave plates are made of high-quality quartz crystal or MgF₂ material, combined with rigorous polishing and ion beam coating processes, to provide stable, low-loss, and high-reliability polarization control in multiple bands such as UV, VIS, NIR, etc.
Why Hobbite?（Why Choose Us）
1. Focus on optical manufacturing for 20 years
We have rich experience in the processing of wave chips and polarized optical components to meet the high-precision needs of scientific research institutions, laser manufacturers, and industrial customers.
2. High-precision manufacturing capabilities
Use ultra-precision polishing machines and ion beam coating equipment to ensure that the product has:
- Higher phase accuracy
- Lower wavefront error
- Better coating reliability
3. Strong batch consistency
Strict batch control and an automatic inspection process are suitable for mass production of laser equipment and optical module manufacturers.
4. Whole process testing
Interferometer, polarization test, and photodamage threshold test reports are provided to ensure that each product is reliably available.
5. Flexible and fast delivery
Support small-batch trial production and large-scale production, stable delivery time, and complete international logistics facilities.
Customization Available
We support the following customization options:
Optical customization
- Operating wavelength (UV/VIS/NIR/SWIR)
- Zero-stage, dual-wavelength, broadband waveplates
- Polarization angle and phase accuracy
- AR / BBAR / High Power Laser Coating
Structural parameters customization
- Diameter 5–100 mm
- Thickness 0.2–5 mm
- Fast axis direction calibration method (line marking/laser etching)
- Mounting Box Type (OEM Supported)
OEM/ODM support
- Optical path design support
- Optical module matching
- High-volume manufacturing and consistency control
If there are drawings, we can produce them directly according to the drawings.
Frequently Asked Questions (FAQs)
1. What is the difference between zero-stage and multi-stage waves?
Zero-Order: Lower temperature and wavelength sensitivity, suitable for high-precision applications.
Multi-Order: Lower cost but slightly weaker phase stability.
2. Can a half-wave change the intensity of light?
No. The λ/2 wave plate only changes the polarization direction and does not affect the light intensity.
3. How do I choose the diameter of the wave plate?
Dimensions larger than 1.2–1.5 times the beam diameter are generally chosen to avoid edge diffraction.
4. Can it be used in high-power laser systems?
Yes, we offer high damage threshold coatings that can be used in laser environments up to >10 J/cm².
5. Can I mark the axis according to the angle of my optical path design?
We support custom fast-axis orientation to ensure that it matches your actual optical path.
Specifications
The following are standard sample specifications, which can be changed as needed:
Optical parameters
Parameter | Typical value |
Materials | Quartz / Magnesium Fluoride (MgF₂) |
Operating bands | 266 nm / 355 nm / 532 nm / 633 nm / 780 nm / 1064 nm (customizable) |
Type | Zero-Order, Composite Zero-Order, Multi-Order |
Phase Delay | λ/2 (180°) |
Wavefront distortion | ≤ λ/8 @ 632.8 nm |
Surface quality | 20-10 / 10-5 (optional) |
Surface parallelism | < 10 arc seconds |
Damage threshold | > 10 J/cm² (1064 nm, 10 ns) |
AR Coating | R < 0.2% (can be customized by wavelength) |
Geometry parameters
Parameter | Typical value |
Diameter | Φ 8 / 12.7 / 25.4 / 30 mm (customizable) |
Thickness | 0.5–3 mm (varies depending on the type of wave, can be customized) |
Notes | The coordinate system is clearly marked in the direction of the fast axis |
