Achromatic Waveplate
Achromatic waveplate is made from two different substrate materials such as crystal quartz and magnesium fluoride. For the single material,waveplateâ??s 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, itâ??s 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.
Polarization Rotator
Due to the rotation activity of natural quartz crystal, it also can be used as polarization rotators so that the plane of input linearly polarized beam will be rotated at special angle which is determined by the thickness of quartz crystal.
Fabry Parot Etalon is a high-resolution interference spectrometer with wide applications, which include high-resolution spectroscopy, the study of spectral lines with very close wavelengths, such as the isotope spectrum of elements, the hyperfine structure of the spectrum, the small frequency shift in light scattering, the Doppler shift of spectral lines caused by atomic movement, and the internal structure shape of spectral lines. It can also serve as a high demanding optical filter and a precision wavelength meter. In the laser system, it is often used to narrow the spectral line in the cavity or make the laser system operate in a single mode. It can be used as a bandwidth control and tuning device in broadband picosecond lasers to detect and analyze the spectral components in the laser (longitudinal mode, transverse mode). Use of etalon and selection of substrate materials Etalons, when used in transmission mode, have a series of transmittance peaks with periodic frequency spacing and are typically used in telecom for wavelength locking. Etalons are characterized by their Free Spectral Range (FSR) the frequency spacing between peaks and their Finesse which essentially governs the shape of the transmission peaks. Etalon filters typically consist of a single spacer layer with two reflector stacks on either side. For FSR values below 1000 GHz, the spacer is usually fabricated from a substrate material (rather than grown in thin film deposition). To achieve etalon quality polishing the parallelism of the substrate needs to be better than 1-5 arc-seconds. Different substrate materials are chosen depending on the application fused silica is used when the etalon FSR and peak variation with temperature is to be minimized while Si is used when a high FSR temperature coefficient is required for thermal tuning. Photonchina fabricates custom high quality fused silica and Si etalons at competitive prices with FSR values in the range of 12.5 GHz to 500 GHz. Types of Etalon The optical etalon can be a single-piece structure with parallel reflective surfaces, the solid-state etalon made of fused silica material, or an air-gap structure using a Fabry-Perot cavity double-reflective mirror, i.e., the air-gap etalon. 1. Solid Etalon: Photonchina Specifications: Material: H-K9L/BK7, Quartz Glass
Roof Prism A roof prism is a reflective optical prism to make two cross beams be parallel with each other. It contains a section where two faces meet at a 90 angle. These two 90 faces resemble the roof of a building, giving this prism type its name. Reflection from the two 90�° faces returns an image that is flipped laterally across the axis where the faces meet. In some cases, passing through the prism, the image is both deflected right-to-left and top-to-bottom. The hypotenuse of the prism utilizes total internal reflection (TIR) to reflect the image through the prism. Polarization states may become rotated during reflection. As a rich experienced manufacturer, substrate material in Photonchina can be chosen from all optical glasses (N-BK7, for instance), Fused Silica, Si, ZnSe, ZnS, CaF2, MgF2 etc.
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. Photonchinaâ??s 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.
Zero order waveplates A quarter-or half-wave retarder made from two plates of quartz with their fast axes crossed; the difference in thickness between the two plates determines the retardance. Zero-order retarders provide accurate retardance over a broad range of wavelengths and dance over a broad range of wavelengths and are more durable than single-element retarders. Cemented zero-order waveplates Cemented zero-order waveplate is constructed of two multi-order waveplates with their axis crossed. Thus, it performs as a zero-order waveplate because of the effect of two plates counteracting each other. It has wide temperature bandwidth and wavelength bandwidth properties. Because it is cemented, the dama zge threshold must be considered (about 10mw/cm2) when used. Key features: - double plates - broad spectral bandwidth - wide temperature bandwidth - ar coated Technical capability Material: Crystal quartz Dimension tolerance: +0.0, -0.2mm Wavefront distortion: λ/4 @ 632.8mm Retardation tolerance:
The true zero order waveplate means that the thickness of waveplate is very thin (less than 0.1mm) which make the true zero order waveplate excellent in temperature, wavelength and incident angle (about 20) bandwidth. Therefore, it is excellent choice for the highly accurate application. It is cemented with a block of glass which is limited to low and medium power application. Key features: - broad spectral bandwidth - wide temperature bandwidth - wide angle bandwidth - cemented by epoxy Technical capability Material: Crystal quartz / bk7 optical glass Dimension tolerance: +0.0, -0.1mm Wavefront distortion: 8 @ 632.8nm Retardation tolerance: 500 Wavelength range: 400-2100nm Parallelism: < 1 arc second Surface quality: 20-10 scratch & dig Coating: Ar/ar coating, r < 0.2% on both surface at central wavelength
Waveplates Waveplates, also known as retardation plates, are optical element having two principal axes slow and fast, that resolve an incident polarized beam into two mutually perpendicular polarized beams. The emerging beam recombines to form a particular single polarized beam. Retardations plates produce full, half, quarter and octadic-wave retardations. Low order waveplates The properties of low order waveplates are much better than the multi-order wave-plates because of its thinner thickness (less than 0.5mm). Better temperature (38), wavelength (1.5nm) and incident angle (4.5�) bandwidth and high damage threshold make it widely used in common application. Also it is economical. Key features: -thickness: 0.2-0.5mm -high damage threshold -better temperature bandwidth -low cost Technical capability Material:crystal quartz Dimension tolerance:+0.0, -0.1mm Wavefront distortion:/8 Retardation tolerance:/500 Wavelength range:240-2100nm Parallelism:< 1 arc second Surface quality:20-10 scratch & dig Coating:ar/ar coating, r < 0.2% on both surface at central wavelength
igh End Full Automatic biochemistry analyzer Specification: Throughput constant 180 T/h or 300T/h,best for middle or small size hospital Closed integrated photovoltaic systems, no mechanical parts,maintenance free Minimum reaction volume is 150ul,cost saving Discrete,random access,automatic Random choice of method, the real discrete automatic chemistry analyzer This automatic chemistry analyzers have gained a lot of national patents during the researching. Analyze Unit l Throughput: constant 180 T/h, 81 reaction cuvette positions,multi-channel testing together. l Minimum reaction volume is 150�¼l, cost saving. l Determined by the sample sequence, inserted at any time emergency. l Heating method: Direct thermal solid thermostat closed. Optical Unit l Closed integrated photovoltaic systems, no mechanical parts,maintenance free. l Light Source:Halogen-tungsten lamp; l Lifetime2000 h. l 8 Wavelength,support single or dual wavelength.
Tl510 3gsdi optical transceiver can inter-convert between electrical signal and optic signal of multi-channels hdsdi, 3gsdi. It is used to transmit the 3gsdi ultra hd video signal that the bit-rate is 2.97gbps, or hdsdi digital video signal that the bit-rate is 1.485gbps. And it downward compatible with the sd-sdi signal that the bit-rate are 143m, 177m, 270m, 360m, 540mbps, and fully compatible with dvb -asi signal. Support up to 16 kind of 1270nm-1610nm cwdm wavelength (itu-t g694.2 compatible). With ultra high signal accuracy and jitter-proff circuit board, tl510 can deal-with the distorted signal well, and supports pathological ts. It can provide 120m auto-balace for 2.97gbps, 200m auto-balace for 1.485gbps, 400m auto-balace for 270mbps Main features: Fully conforms to the standard of smpte 259m, smpte 344m, smpte 292m, smpte 424m Bit-rate: 125mbps~1.485gbps or 125mbps~2.97gbps Supports 16 kinds of 1270nm~1610nm cwdm wavelength (itu-t g694.2) Supports 120m automatical cable balance of the bit-rate less than 2.97gbps (belden 1694a) Supports 200m automatic cabel balance of the bit-rate less than 1.485gbps (belden 1694a) Supports 400m automatic cable balance of the bit-rate less than 270mbps ( belden 1694a); With signal jitter-proff circuit board at both transmitting end and receiving end, it can deal with distorted signal well Supports pathological ts With input signal indicator light function Network manager based on web browser, snmp function Mode-based structure, multi-function module can join flexibly 1u or 2u chassis, it is easy to install, upgrade and maintain Dual power supply -