Optical communication filter CWDM Filter

Brand: COUPLETECH Surface Quality: 20/10 Scratch And Dig Material: Crystal Quartz

An Achromatic Waveplate, AWP, is similar to a Zero-Order Waveplate, which is made from two pieces of Crystal Quartz except that the AWP is composed of one piece of Crystal Quartz and one piece of Magnesium Fluoride, MgF2. As a kind of optical elemtents, achromatic waveplate is similar to Zero-order waveplate except that the two plates are made from different materials, such as crystal quartz and magnesium fluoride. Since the dispersion of the birefringence can be different for the two materials, it is possible to specify the retardation values at a wavelength range. Unlike standard waveplates, Achromatic Waveplates (Retarders) provide a constant phase shift independent of the wavelength of light that is used. This wavelength independence is achieved by using two different birefringent crystalline materials. Both of these materials are birefringent, however, by proper matching of the birefringent changes in one material with those of the second, retardation changes are minimized as the wavelength changes. This phenomenon produces a waveplate whose change in retardation is extremely small for large variations in wavelength. Hence, the retardation of the resulting waveplate can be made to low sensitivity to wavelength change. In other words, it can be used at a broad-band wavelength range. Based on the contact methods of two plates, we classify the achromatic waveplate to two types: Airspaced and Cemented. Features of Achromatic wave plate are wide spectral bandwidth, low temperature sensitivity and large sizes available. Besides, Lambda/4 achromatic wave plate and lambda/2 achromatic wave plate are available. Coupletech off standard and custom design achromatic waveplate. Please contact us for more information. Also provide other kind of optical products such as : Optical Lenses, Optical Filters, Beamsplitter, Optical Windows, Optical Mirrors and optical prism.

Brand: COUPLETECH Surface Quality: 20/10 Scratch And Dig Material: Crystal Quartz

Dual Wavelength Wave Plate is made from Birefringent Crystals which introduce a phase difference between the fast and slow principal axis of the waveplate, it can be used to control polarization state of polarized beam. It's a remarkable kind of Optical Element which belong to Polarizing Optic. Normally, Dual Wavelength Wave plate and Multiwavelength Wave plate are made of crystal quartz. Dual Wavelength Waveplate is a special kind of multi order waveplates. Dual wavelength waveplate is designed to be used in dual wavelength setups, for example, it can be operated as a quarter waveplates at 1064nm and as a half waveplate at 532nm at the same time. It's always used to manage the states of polarization of laser beams to obtain maximum conversion efficiency. And it is a kind of Laser Component as well. Multiple wavelength wave plate is made of single crystal or MgF2 expressed the crystals can provide different wavelength of a quarter or half of phase delay, and can also be customized according to the requirements of any delay of multi wavelength wave plate. It is often used in solid - frequency laser to improve the efficiency of laser conversion. The multi-wavelength wave plate is a special multistage wave plate, which can obtain the desired phase delay according to the fitting of the refractive index at different wavelengths, but the phase delay is usually multistage.

Material [Commercial / High Precision]: Crystal quartz Dimension X×Y(φ) [Commercial / High Precision]: 1×1mm；3×3mm；φ3~φ25.4mm Dimension tolerance [Commercial]: ±0.1mm

Achromatic waveplate is constructed of two plates which are made from different materials, such as crystal quartz and magnesium fluoride. Since the dispersion of the birefringence can be different for the two materials, it is possible to specify the retardation values at a wavelength range. Accordingly, the retardation of the resulting waveplate can be made to low sensitivity to wavelength. We can supply the achromatic waveplate of two types: airspaced and cemented according to the contact methods of two plates.

Material [Commercial / High Precision]: Crystal quartz Dimension X×Y(φ) [Commercial / High Precision]: 1×1mm；3×3mm；φ3~φ25.4mm Dimension tolerance [Commercial]: ±0.1mm

Its thinner thickness is less than 0.5mm. Better temperature (380C), wavelength (1.5nm) and incident angle (4.50) bandwidth and high damage threshold make it widely used in common application. Furthermore, it is economical.

Material [Commercial / High Precision]: Crystal quartz Dimension X×Y(φ) [Commercial / High Precision]: 1×1mm；3×3mm；φ3~φ25.4mm Dimension tolerance [Commercial]: ±0.1mm

True zero-order waveplates are constructed of a crystal quartz waveplate in drect bonding with a high-precision BK7 glass window.The thickness of the true zero-order waveplate is very thin (less than 0.1mm).it make the true zero-order waveplate excellent in temperature, wavelength and incident angle (about 20º) bandwidth. Therefore, it is excellent choice for the highly accurate application. Meanwhile we also supply the single True zero-order waveplates In order to enable the waveplate suitible for high damage threshold (more than 1GW/cm2) application. The thickness of this waveplate means handling can be difficult, we can provide mounts upon request.