1/2 or 1/4 Multiple Order Waveplate Low Order Waveplate

Product Description

Product Description
Waveplate OverviewWaveplates (retardation plates or phase shifters) are made from materials which exhibit birefringence. The velocities of the extraordinary and ordinary rays through the birefringent materials vary inversely with their refractive indices. The difference in velocities gives rise to a phase difference when the two beams recombine.
Half Waveplate
The thickness of a half waveplate is such that the phase difference is 1/2-wavelength (ture-zero order) or some multiple of 1/2-wavelength (multiple order). A linearly polarized beam incident on a half waveplate emerges as a linearly polarized beam but rotated such that its angle to the optical axis is twice that of the incident beam. Therefore, half-waveplates can be used as continuously adjustable polarization rotators. Half-waveplates are used in rotating the plane of polarization, electro-optic modulation and as a variable ratio beamsplitter when used in conjunction with a polarization cube.
Quarter WaveplateThe thickness of the quarter waveplate is such that the phase difference is 1/4 wavelength (ture-zero order) or some multiple of 1/4 wavelength (multiple order). If the angle q (between the electric field vector of the incident linearly polarized beam and the retarder principal plane) of the quarter-waveplate is 45, the emergent beam is circularly polarized. When a quarter waveplate is double passed, i.e. by mirror reflection, it acts as a half waveplate and rotates the plane of polarization to a certain angle. Quarter waveplates are used in creating circular polarization from linear or linear polarization from circular, ellipsometry, optical pumping, suppressing unwanted reflection and optical isolation.Multiple order waveplate means the retardance of a light path will undergo a certain number of full wavelength shifts in addition to the fractional design retardance. The thickness of multi order waveplate is always around 0.5mm. Compared with zero order waveplate, multi order waveplate is more sensitive to wavelength and temperature changes. However, they are less expensive and widely used in many applications where the increased sensitivities are not critical.
Thickness: 0.2-0.5 mmHigh Damage ThresholdBetter Temperature BandwidthLow CostOur Factory
Our workshop
There are more than 50 high-performance machines and hundreds of experienced employees in our factory. In addition to the cold working of optical lenses, we also provide lens design, coating, assembly services. Our annual production capacity for general lenses and components is about 30 million pieces.
Optical Coating
Our technical team is capable of performing various types of coating processes to meet different need, including anti-reflective coatings, high-reflective coatings, long-pass coatings, short-pass coatings, handpass coatings, anti-laser coatings, waterproof coatings, metal coatings, and conductive coatings.
Quality Assurance
Product quality always comes first. We have a complete quality control system which can guarantee the precision of our products. Our testing instruments include spectrophotometer, goniometer, sphericity interferometers, laser interferometer and ZYGO profilometer etc. Before delivery, we will check the products one by one to see if they are qualified.
Certification
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