Abstract:
The disclosure is directed to an element that is capable of acting as both an optical polarizer and an optical attenuator, thus integrating both functions into a single element. The element comprises a monolithic or one piece glass polarizer (herein also call the "substrate"), a multilayer " light attenuation or light attenuating " ("LA") coating that has been optimized for use at selected wavelengths and attenuations deposited on at least one polarizer facial surface, and a multilayer anti-reflective (AR) coating on top of the LA coating. The disclosure is further directed to an integrated optical isolator/attenuator comprising a first and a second polarizing elements and a Faraday rotator for rotating light positioned after the first polarizing element and before the second polarizing element, the integrated optical isolator/attenuator both polarizing and attenuation a light beam from a light source.
Abstract:
The disclosure is directed to a method of making yttrium oxide, Y 2 O 3 , coatings on substrates suitable for use at infrared wavelengths, including use in the 2-12 μm range. The coating method eliminates or substantially eliminates the absorptions peaks that typically appear at approximately 3.0 μm, 6.6 μm and 7.1 μm. This is achieved by using Y metal as the yttrium source in combination with an oxygen-containing plasma to form the Y 2 O 3 , coating in place of the using Y 2 O 3 as the coating material source The disclosure is further directed to optics suitable for use in the infrared that have such coatings. The transmission spectrum of the coated substrate made according to the method described herein is greater than the transmission spectrum of the uncoated substrate over the wavelength range of 4 μm to 12 μm.
Abstract translation:本公开涉及在适用于红外波长的衬底上制造氧化钇Y 2 O 3 O 3涂层的方法,包括 在2-12μm范围内使用。 涂覆方法消除或基本上消除了通常出现在约3.0μm,6.6μm和7.1μm处的吸收峰。 这是通过使用Y金属作为钇源与含氧等离子体组合以形成Y 2 O 3 3涂层以取代使用的Y
Abstract:
The invention is directed to a method for cleaning surfaces of optical elements made from metal fluoride single crystals of formula MF2, where M is calcium, barium, magnesium, or strontium, or mixtures of the foregoing, prior to coating the elements with films of protective materials. The method has at least the steps of: (a) immersing the optical element in at least one selected liquid and utilizing sonication at megasonic frequencies to remove particulates, polishing slurry residue and the damaged top layer of the optical element; (b) cleaning in a gas phase cleaning process whereby hydrocarbons are removed from the surface of the optical element using UV/ozone cleaning; and (c) exposing, in a gas phase process, of the optical element's surface to a low-energy plasma containing argon and oxygen in a vacuum environment.
Abstract:
The invention is directed to preparing optical elements having a thin, smooth, dense coating or film thereon, and a method for making such coating or film. The coated element has a surface roughness of
Abstract:
The disclosure is directed to a coating comprising a binary metal fluoride coating consisting a high refractive index metal fluoride layer on top of a substrate, a low refractive index metal fluoride layer on top of the high refractive index layer and layer of SiO 2 or F-SiO 2 containing 0.2 wt% to 4.5 (2000ppm to 45,000 ppm) F on top of the low refractive index layer. In one embodiment the F content of F-SiO 2 is in the range of 5000 ppm to 10,000 ppm F. The high index and low index materials are each deposited to a thickness of less than or equal to 0.9 quarter wave, and the capping material is deposited to a thickness in the range of 5nm to 25nm. The disclosure is also directed to optical elements having the foregoing coating and a method of making the coating.
Abstract:
An optic having a composite MgO-Mg F 2 infrared anti-reflective coating that is suitable for use in LWIR, MWIR and SWIR ranges, and is particularly suitable for use in the LWIR range. The coated optic disclosed herein passes the severe abrasion test with a barring force between 0.91 kgs and 1.34 kgs. The MgO-Mg F 2 infrared anti-reflective coating has a thickness in the range of 500nm to 1500nm and a reflectance value R x at 12° of less than 2% in the wavelength range of 7.25nm to 11.75nm.
Abstract:
The invention is directed to single crystal alkaline earth metal fluoride optical elements having an adhesive, hermetic coating thereon, the coating being chemically bonded to the surface of the metal fluoride optical element with a bonding energy >4 eV and not merely bonded by van de Walls forces. The materials that can be used for coating the optical elements are selected from the group consisting of SiO 2 , F-SiO 2 , Al2O 3 , F-Al2O 3 , SiON, HfO 2 , Si 3 N 4 , TiO 2 and ZrO 2 , and mixtures (of any composition) of the forgoing, for example, SiO 2 JHfO 2 and F-SiO 2 /ZrO 2 . The preferred alkali earth metal fluoride used for the optical elements is CaF 2 . Preferred coatings are SiO 2 , F-SiO 2 , SiO 2 /ZrO 2 and F-SiO 2 /ZrO 2 .
Abstract translation:本发明涉及在其上具有粘合剂,气密涂层的单晶碱土金属氟化物光学元件,该涂层以金属氟化物光学元件的表面化学键合,其结合能> 4eV,不仅仅由van de Walls 军队。 可用于涂覆光学元件的材料选自SiO 2,F-SiO 2,Al 2 O 3,F-Al 2 O 3,SiON,HfO 2,Si 3 N 4,TiO 2和ZrO 2,以及前述的任何组合的混合物 ,例如SiO2JHfO2和F-SiO2 / ZrO2。 用于光学元件的优选碱土金属氟化物是CaF 2。 优选的涂层是SiO 2,F-SiO 2,SiO 2 / ZrO 2和F-SiO 2 / ZrO 2。
Abstract:
The invention is directed to optical elements that are coated with dense homogeneous fluoride films and to a method of making such coated elements. The coatings materials are a high ("H") refractive index fluoride material and a low ("L") refractive index material that are co evaporated to form a coating layer of a L-H coating material (a co deposited coating of L and H materials). Lanthanide metal fluorides (for example, neodymium, lanthanum, dysprosium, yttrium and gadolinium, and combinations thereof) are preferred metal fluorides for use as the high refractive index materials with lanthanum fluoride (LaF3)and gadolinium fluoride (GdF3) being particularly preferred. Aluminum fluoride (AlF3) and alkaline earth metal fluorides (fluorides of calcium, magnesium, barium and strontium) are the preferred low refractive index materials, with magnesium fluoride (MgF2) being a preferred alkaline earth metal fluoride.
Abstract:
A vehicle includes a body of the vehicle and a sensing system coupled to the body. The sensing system includes optical componentry and a glass material, where the glass material at least in part houses the optical componentry and the glass material is at least partially transparent to light at the wavelength of the optical componentry. Further the glass material has mechanical and performance properties that allow the sensing system to be positioned particularly low on the vehicle, at a position that may be of higher risk for damage from debris.
Abstract:
The disclosure is directed to multilayer Mo/Si coatings for reflective mirrors used in extreme ultraviolet lithographic systems and to a method of making such mirrors using plasma ion assisted deposition (PIAD) techniques. The coating are deposited on a substrate suitable for EUV lithography, and are Mo/Si coating consisting of 40-100 Mo/Si periods, each period consisting on a Mo layer followed by a Si layer. Each of the individual Mo and Si layers is deposited to a specified or target thickness in the range of 2nm to 5nm, and the thicknesses are controlled to 0.1nm. A plasma from a plasma source is used to densify and smooth the substrate prior to deposition of the coating, and each layer of the coating is plasma densified and smoothed.