Product Description

Waveplate is an optic in which the polished faces contain the optical axis. All light incidents normal to the surface are composed of components polarized parallel and perpendicular to the axis. In such a device, light polarized parallel to the axis will propagate slower than light polarized perpendicular to the axis. As the light propagates through the optic, the phase shift between the two components with various thickness. The phase shift is called retardance. The most popular retarders in Photonchina are quarter and half wave.

With an appropriate choice of thickness, any degree of retardance may be achieved at any wavelength for which quartz is transparent. However, the minimum thickness necessary to achieve a mechanically strong part corresponds to several full waves of retardance.

 Photonchinas waveplate can transmit light and modify its polarization state without attenuating, deviating, or displacing the beam.It is ideal for applications requiring high damage thresholds and retardation stability over temperature change, such as for use with lasers or infrared light sources.

Wavepalte Types:

Photonchinas waveplates include octadic waveplate (1/8 waveplate),quarter waveplates(1/4 waveplate), half wave plates(1/2 waveplate) and full waveplate

Both circular aperture and quadratic aperture are available.

Half waveplate

Quarter Waveplate

The thickness of the quarter waveplate is such that the phase difference is 1/4 wavelength ( λ /4, Zero order) or certain multiple of 1/4-wavelength [(2n+1)λ /4, multiple order].

 

Photonchina provides standard waveplate wavelengths (nm) listed as below:

Other wavelengths within the ranger of 200-2300nm are also available.
 

Photonchina Standard Specifications:
Material: Crystal Quartz
Dimension tolerance: +0.0, -0.1mm
Wavefront distortion: < l /8at632.8
Retardation tolerance: < l /500
Wavelength range: 240-2100 nm
Parallelism: < 1 arc second
Surface quality: 20/10 scratches and dig
Clear aperture: >90%
AR coating: R< 0.2% at central wavelength
Standard Wave: quarter-wave ( l /4), half-wave ( l /2)

Zero Order Waveplate

The zero order waveplate is designed to give a retardance of zero full waves, plus the desired fraction. Zero order waveplate shows better performance than low/multiple order waveplates. It has broad bandwidth and a lower sensitivity to temperature and wavelength changes. It should be considered for more critical applications.

1.High Power Waveplate
 
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Used wavelength:400-3000nm

2. Single Plate

This type of zero order waveplate is designed for high damage threshold applications (> 1GW/cm2).

It is made of a very thin quartz,with the thickness of 0.038mm

3. Cemented

This type of zero order waveplate is constructed of one true zero order waveplate and one BK7/K9 substrate.

Achromatic Waveplate

Achromatic waveplate is made from two different substrate materials such as crystal quartz and magnesium fluoride. For the single material,waveplates working wavelength is very limited because of the dispersion of the material. But Achromatic Waveplate uses two different kinds of materials,with the different dispersion, such waveplate is not sensitive to the wavelength change.

Dual Wavelength Waveplate

Dual wavelength waveplate is a special type of multiple waveplate that provides a specific retardance at two different wavelengths, its particularly useful when used in conjunction with other polarization sensitive components to separate coaxial laser beams of different wavelength. It is widely used to improve conversion efficiency in solid double frequency laser device.