Superpolished Fused Silica Reflective Mirror Ra 0.1nm 1/30λ

Asin Optics manufactures and custom Superpolished Fused Silica Reflective Mirror RMS0.1nm for UV laser system. We can manufactures RMS0.1nm, S/D 5-1, flatness 1/30λ and ultra thin components to thickness 30um. Contact us for more detail.

Superpolished Fused Silica Reflective Mirror RMS0.1nm Product Overview

The core value of ultra-smooth fused silica mirrors lies in their ability to minimize photon loss. These mirrors are manufactured by depositing high-reflectivity coatings onto high-purity fused silica substrates with surface roughness at the angstrom level. Asin Optics is a Chinese manufacturer specializing in the custom design and production of superpolished fused silica reflective mirrors. Our current fused silica mirrors achieve a surface roughness of 0.1–0.2 nm, a surface flatness of 1/30λ, and a surface defect count of 5–1. Our super-smooth fused silica mirrors combine ultra-high surface flatness with high-performance metal and dielectric coatings, providing precision interferometric designs for high-power lasers and ultrafast lasers.

Superpolished Fused Silica Reflective Mirror RMS0.1nm key Advantage

• We employ advanced ultra-precision polishing techniques, achieving a Sub-Angstrom Roughness (Ra) consistently within the range of 0.1–0.2 nm. The ultra-smooth surface minimizes scattering losses, making it particularly suitable for applications in the ultraviolet and deep ultraviolet spectrums.
• Our Superpolished Fused Silica Reflective Mirrors achieve a surface accuracy of 1/30λ, with minimal error in the reflected wavefront.
• We use high-purity imported fused silica as the substrate. Fused silica has a very low coefficient of thermal expansion and maintains excellent stability even under temperature fluctuations.
• We currently offer high-performance reflective coatings, including multi-layer dielectric coatings, gold coatings, and silver coatings. Dielectric coatings achieve reflectance of over 99.9% in a single wavelength band, while metal coatings provide high reflectance across a broad spectrum.
• Thanks to the combination of an ultra-smooth surface and high-quality IBS coatings optimization, all coatings have been optimized for high laser damage thresholds and can withstand high-peak laser power.
• Our surface defect classification standard meets 5-1 specifications. Combined with a Class 100 cleanroom environment and vacuum packaging, we can strictly control surface quality.
• In addition to supporting flat and spherical surfaces, with dimensions ranging from 7 to 700 mm, we can optimize coatings for any center wavelength and provide both single-wavelength and broadband reflectivity.

Superpolished Fused Silica Reflective Mirror RMS0.1nm Technical Specifications

Superpolished Fused Silica Reflective Mirror RMS0.1nm Metrology

Superpolished Fused Silica Reflective Mirror RMS0.1nm Custom Capability

Why Choose Asin Optics For Your Superpolished Low Scattered Optics

1. Our coating engineers and technical team work closely together throughout the entire process—taking into account the customer’s wavelength, angle of incidence, laser power density, and stress compensation—to ensure that our coating layers and ultra-smooth surfaces are perfectly matched.
2. From substrate cleaning and coating to inspection and packaging, all processes are performed in a Class 100 cleanroom environment, and vacuum packaging prevents contamination during transportation and storage.
3. We have the capability to provide rapid prototyping for PPM level scattering mirrors as well as mass production. Please contact us for quick prototyping.

Low-loss Laser Mirrors Applications

• Resonator Mirrors

  High-performance gas lasers, such as CO₂ and excimer lasers, require resonator mirrors capable of withstanding high-energy laser loads; even minor wear on the mirrors can affect the cavity. Fused silica mirrors with sub-nanometer surface roughness can serve as high-reflectivity end mirrors for plano-concave resonators and as output coupling mirrors, ensuring long-term continuous operation and cavity resonance stability.

• Precision Gyroscopes

  To achieve zero-bias stability of 0.001°/h or even higher, ultra-smooth mirrors with surface roughness and defect density pushed to their physical limits are required to suppress backscatter to below the ppm level. As ultra-smooth fused silica mirrors, they can precisely maintain low-loss resonance for both counter-clockwise and clockwise traveling waves in laser gyroscopes, thanks to their ultra-smooth surfaces and ultra-low-loss coatings.

• Deep-ultraviolet Semiconductor Wafer Inspection

  Semiconductor wafer defect inspection(such as bright-field, dark-field, and electron-beam-assisted optical inspection) and alignment measurement often utilize short-wavelength light sources such as 266 nm and 193 nm to detect nanoscale defects. The nanometer-level surface roughness of every folding mirror in an optical system contributes to a strong scattering background. As folding mirrors in deep-ultraviolet/ultraviolet illumination paths, reflective elements in imaging objectives, or critical reflective surfaces in bright-dark field switching systems, these mirrors are coated with UV-enhanced aluminum or low-loss dielectric high-reflectivity coatings. Ultra-smooth fused silica mirrors are mounted on precision mirror mounts and serve both to shape and redirect the beam; their surface flatness ensures diffraction-limited imaging.

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