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Waveplates (retardation plates or phase shifters) are made from materials which exhibit birefringence. The velocities of the extraordinary and ordinary rays through the birefringent material varies inversely with their refractive indices. This difference in velocities gives rise to a phase difference when the two beams recombine.
Product Origin:
ChinaOrder(MOQ):
10Shipping Port:
Fuzhou, ChinaLead Time:
4 weeks
Half Waveplate
A half waveplate rotates linearly polarized light to any desired orientation. The rotation angle is twice the angle between the incident polarized light and the optical axis. Therefore, the half waveplate can be used as a continuously adjustable polarization rotator. The half waveplate is used to rotate the plane of polarization, electro-optic modulation and as a variable ratio beamsplitter when used in conjunction with a polarization cube.
Quarter Waveplate
When linearly polarized light is input at 45deg to the axis of a quarter waveplate, the output is circularly polarized, similarly, input circularly polarized light is transformed into linearly polarized light. The quarter waveplate is used in creating circular polarization from linear or linear polarization from circular, ellipsometry, optical pumping, suppressing unwanted reflection and optical isolation.
Types of Waveplate
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Type |
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Feature |
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Zero Order |
Cemented |
Cemented by glue；Better Temperature Bandwidth；Wide Wavelength Bandwidth；Moderate damage threshold |
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Optical Contacted |
No glue；Better Temperature Bandwidth；Wide Wavelength Bandwidth；Better damage threshold；Good wavefront and parallelism |
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Air Spaced |
No glue, Mounted；Better Temperature Bandwidth；Wide Wavelength Bandwidth；High damage threshold |
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True Zero Order |
Cemented |
Cemented by glue；Better Temperature Bandwidth；Wide Wavelength Bandwidth；Moderate damage threshold；Excellent retardation performance |
|
Single Plate |
Single plate；Better Temperature Bandwidth；Wide Wavelength Bandwidth；High damage threshold；Only 1310nm, 1550nm available |
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Multi Order |
Low Temperature Bandwidth；Low Wavelength Bandwidth；High damage threshold；Low cost |
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Dual Wavelength |
Provide Specific Retardance At Two Different Wavelengths |
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Achromatic |
Better Temperature Bandwidth；Very broad Wavelength Bandwidth；Cemented and air spaced available |
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Cr4+:YAG (Y3Al5O12) crystal is ideal for passive Q-switch operation of Nd:YAG and other Nd3+ or Yb3+ doped laser crystals in the wavelength range of 900 nm to 1200 nm. Passive Q-switches or saturable absorbers provide high power laser pulses without electro-optic Q-switches, thereby reducing the package size and eliminating a high voltage power supply. A remarkable feature of Cr4+:YAG is the high damage threshold of >10 J/cm2@1064 nm, 10 ns. Its absorption band extends from 900 nm to 1200 nm and peaks around 1060 nm with a very large absorption cross-section.
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