Optical Coatings have been and will continue to be the core and pinnacle of optical technologies, as optical coatings are applied almost ubiquitously on a wide range of optical components and laser optics like windows, lenses, mirrors, laser gain media, and nonlinear crystals to alter the behavior of light. The thin film nature makes optical coatings compact and versatile, while the vast freedom of coating designs and engineering allows the precise manipulation of refraction, reflection, and polarization. From anti-reflection coatings that maximize transmission to high-reflective coatings for mirrors and lasers, the range of options ensures that each optical system can be optimized for its intended use.
At Shalom EO, we specialize in providing custom optical coating services, with leading-edge technical experience and top-class facilities, we design and manufacture optical coatings tailored to meet customers’ requirements. We offer a wide selection of optical coating types, including dielectric coatings, metallic coatings, dielectric-metallic hybrid coatings, etc. :
Our coating catalog comprises:
1. Anti-reflection (AR) Coatings (broadband AR coatings, dual/multiple wavelength AR coatings, or laser line V-Coatings)
2. High Reflective (HR) Dielectric Coatings
3. Metallic Mirror Coatings (Al, Ag, Au, or in protected and enhanced versions)
4. Optical Filter Coatings (bandpass filters, long/short pass filters, and notch filters)
5. High Power and Ultrafast Optical Coatings (high laser damage threshold coatings, ultrafast enhanced mirror coating, chirped mirror coatings)
6. Beamsplitter and Dichroic Coatings (polarizing and non-polarizing beamsplitter coating, dichroic coatings)
Advanced Coating Technologies
At Shalom EO, we use Ion Assisted Electron Beam Deposition (IAD e-beam) technology in our class 1000 clean room to ensure precision and high-quality coatings. This process, which combines the evaporation of target materials via electron beam with ion assistance, enables the creation of denser films with reduced scatter compared to evaporative deposition alone, resulting in high-quality, flawless films that are low-stress and environmentally stable. This IAD e-beam process is also a cost-effective and efficient method to obtain a similar outcome to ion beam sputtering (IBS).
The coating machine that we use to manufacture optical coatings is SHINCRON MIC-1350TBN. The entire coating process is carried out in a class 1000 clean room to avoid potential contamination. We aim to deliver optical coatings with the appropriate design, optical excellence, and durable performance that suits your budget.
Coating Design and Material Selections:
The design and material selection of coatings is a complex process that typically requires both to work in tandem. Whether it's a single-layer film, multi-layer film, dielectric film, metallic film, or hybrid film, the layer structure and thickness must match the refractive indices of the coating materials and the substrate to achieve the desired effect. For example, a multi-layer dielectric high-reflective coating is achieved by stacking multiple layers of dielectric materials to gain constructive interference. By finely calculating the thickness of each dielectric layer and piling a large number of layers, the reflectivity of the high-reflective coating can be made extremely high.
At Shalom EO, with rich engineering insights, we use modeling software to design the coating that meets the specific needs of your optics.
Cleaning:
In high-performance optical coatings, especially those designed for high-power or ultrafast lasers, even the smallest particle can lead to detrimental absorption, leading to performance degradation or even damage to the optical components over time. To ensure the coating's effectiveness and longevity, the substrate must be cleaned to the highest standards before the coating process begins. At Shalom EO, we leverage ultrasonic cleaning machines as part of our rigorous preparation process.
Quality Control
Our advanced tools, including the PerkinElmer Lambda 1050+ spectrometer and the Ultrafast Innovations GOBI interferometer, provide precise measurements of critical parameters such as transmission curves and group delay dispersion (GDD). Reports, curves, and raw data with critical parameters are available.
Shalom EO is committed to providing optical coatings that enhance the potential of your optics. Whether you're working with high-power lasers, ultrafast pulsed, or need custom filter solutions, our coatings will meet the demands of your most challenging applications.