Request InfoSTANDA UABZero-order crystalline quartz retardation plates with wavelengths for first, second, third and fourth Nd:YAG harmonics are available from Standa Ltd. The company says that the plates feature antireflection coating, with reflection of <0.3 percent at each surface, a surface finish of 20/10 scratch/ dig, a clear aperture of 20 mm, retardation tolerance of λ/200 at 20 °C, wavefront distortion of λ/10, wedge of 2 in. and mount diameter of 25 + 0/0.5 mm.See full productRelated content from Photonics MediaPHOTONICS HANDBOOK ARTICLESPhotonics HandbookAntireflection Coatings for the Ultraviolet, Visible and Near-IRWEBINARSPhotonics.com 1/19/2021Nanostructured Surfaces: An Alternative to Thin-Film Antireflection CoatingsNanostructured antireflective surfaces are a promising alternative to thin-film antireflective coatings for high-power laser applications. Rather than depositing coating material onto the surface of...Photonics.com 1/10/2023Challenges in Designing and Building Optical Systems for SpaceHardware is hard, optics hardware is harder, and optics hardware in space is the hardest of them all. When designing systems for space, one must account for all the standard specifications of a...Photonics.com 10/27/2021Fiber Optic Solutions for Medical DevicesSteve Allen provides a brief overview and examples of procedures that continue to push adoption and proliferation of optical fiber-based medical devices. From cosmetic surgery to cutting-edge sensing...Photonics.com 7/20/2023Motorized and Calibrated Lenses for Machine Vision ApplicationsMany applications have benefited from motorized varifocal lenses that allow automatic or remote adjustment of focus distance and field of view. Applications may need to change the focal length or...PHOTONICS DICTIONARY+ TERMSPhotonics Dictionarymagnesium fluorideA colorless, crystalline compound whose low refractive index (n = 1.38) makes it effective as a lens antireflection coating when deposited by thermal evaporation in a near vacuum. This process...Photonics Dictionaryantireflection coatingAn antireflection coating (AR coating) is a thin film or coating applied to optical surfaces, such as lenses or windows, to minimize unwanted reflections and increase the transmission of light...Photonics Dictionaryoptical coatingsOptical coatings are thin layers of materials applied to optical components, such as lenses, mirrors, filters, and prisms, to modify their reflective and transmissive properties. These coatings are...Photonics Dictionaryinfrared lensAn infrared lens is an optical component specifically designed and optimized for transmitting, focusing, or manipulating infrared (IR) radiation within the infrared spectrum. These lenses are used in...PHOTONICS BUYERS' GUIDE CATEGORIESInfrared CoatingsAntireflection CoatingsAn antireflection coating is a thin film or coating applied to optical surfaces, such as lenses or windows, to minimize unwanted reflections and increase the transmission of light through the...COMPANIESPhotonics Buyers' GuideFOCtek Photonics Inc.FOCtek provides customers with all types of custom manufactured lenses, Precision Optical Components, Polarizing Optics, Prisms, Filters, Coatings, Optical Systems, Crystals, Nonlinear Crystals,...Photonics Buyers' GuideMLD Technologies LLCExperts In Thin-film Coating Design We practice a design-before-quote approach to help customers refine specifications and minimize technical risk. We understand how coated optical elements...Photonics Buyers' GuideHenan UM Optics Ltd. (Umoptics)Henan UM Optics Technology Co. Ltd. (Umoptics) is a high-tech enterprise integrating material growth, component processing, coating, and devices. The company employs more than 400 people and has a...Photonics Buyers' GuideFresnel Technologies Inc.Fresnel Technologies Inc. is an expert manufacturer of molded plastic optics, including Fresnel lenses and related optical components, as well as infrared transmitting materials and optics made from...