The 99.999% ultra-high reflectivity flat-concave mirror is an optical component with a spherical reflective surface that can efficiently reflect light. Its reflectivity can reach 99.999% making it an optical component with extremely high reflectivity and extremely low light loss.
It has important applications in optical communication, laser technology, laser gyro, high-power lasers, ultra-stable lasers, time-frequency transfer, quantum computing, quantum communication, quantum precision measurement, neutral atoms, cold atoms, Rydberg atoms,gravitational wave detection, etc.
Ultra-high reflectivity plano-concave mirrors typically use the principle of Bragg mirrors, alternately stacking films of high and low refractive index materials on a substrate to form a one-dimensional photonic crystal structure. When the light enters perpendicularly, the optical thickness of each layer of material is designed to be a quarter of the target reflection
wavelength, causing the light reflected from the interface of each layer to undergo constructive interference, superimposing into a powerful reflected beam, while the transmitted light is greatly suppressed due to destructive interference, thus achieving high reflectivity and low loss.
UItraopto Precision Optics Co. Ltd.ultra-high reflectivity plano-concave mirrors can be stably provided through precise control of the polishing and coating processes, and custom mirrors of various specifications are accepted.
General Specifications | |
Reflectance: | ≥99.999% |
Wavelength range: | 420nm-3000nm |
Substrate material: | Zero expansion ULE glass Fused quartz Monocrystalline silicon Sapphire Calcium fluoride |
Surface accuracy: | λ/10 @632.8nm |
Radius of curvature: Sphericity: | 500-8000mm, curvature accuracy ±0.05% 30 "- 3 ' |
Roughness: | Ra 0.1nm, test area 173*173 μ m |
Spherical size: | From 7.5-45 mm |
External dimensions: | D=φ12.7-50.8mm, H=4-8mm |
Dimensional tolerances: | + / - 0.1 mm |
Film size: | D12.7-7.5 mm D25-10mm Customization is available as needed |
Reflection loss: | 2-6ppm |
Transmission loss: | 3-5ppm |
High-quality substrate selection: Laying the foundation for ultra-high precision
Our 99.999% Concave Reflecting Mirror is crafted from high-purity synthetic quartz substrates, featuring exceptional optical homogeneity and a low thermal expansion coefficient, ensuring stable performance across a wide temperature range (-40°C to 85°C). The substrate undergoes ultra-precise polishing processes to achieve a surface roughness of less than Ra 0.1nm, minimizing light scattering and laying the groundwork for ultra-high reflectivity coating. The concave curvature is engineered with micron-level precision, with the radius of curvature tolerance controlled within ±0.01mm. enabling precise focusing of parallel light into a single point without spherical aberration. Synthetic quartz’s superior mechanical strength and corrosion resistance also extend the mirror’s service life in harsh laboratory and industrial environments.
Advanced coating process: achieving 99.999% ultra-high reflectivity
Our 99.999% concave reflecting mirror adopts the state-of-the-art ion beam sputtering (IBS) coating technology, depositing dense, defect-free multi-layer dielectric films on the concave surface. This advanced process ensures uniform film thickness and strong adhesion, achieving a reflectivity of 99.999% at target wavelengths (532nm, 1064nm and custom wavelengths available). The back surface is coated with dielectric anti-reflection (AR) films to reduce back reflection to below 0.15%, eliminating interference from stray light. The coating exhibits excellent environmental stability, resisting humidity, chemical corrosion and repeated cleaning without performance degradation. ensuring long-term reliable operation in critical applications.
Ultraopto’s 99.999% Concave Reflecting Mirror is designed for ultra-high precision applications. It features an ultra-high surface accuracy with a flatness of λ/10 @632.8nm, ensuring consistent reflection and focusing performance across the entire clear aperture (>90%). The mirror has a high laser-induced damage threshold (LIDT >5 J/cm² @1064nm, 20ns, 20Hz), capable of withstanding high-energy laser irradiation without coating damage. The parallelism is controlled within <5 arc seconds, facilitating seamless integration into high-precision optical assemblies. With strict dimensional tolerance control (+0/-0.2mm for diameter), it is compatible with standard optical mounts, and edge chamfering (<0.5mm×45°) prevents chipping during installation and handling.
Wide Application Coverage:
Empowering Advanced Research and Industry
Our 99.999% Concave Reflecting Mirror is widely used in cutting-edge scientific research and high-end industrial fields. In Fabry-Pérot interferometers, it forms high-stability optical cavities to achieve ultra-narrow spectral bandwidth and high sharpness, which are crucial for precise wavelength measurement and spectral analysis. In high-power laser systems, it ensures stable beam reflection and focusing, enhancing system performance.
It is also suitable for high-precision optical testing and metrology, providing reliable performance in demanding applications. it serves as a core component in laser cavities to enhance laser output power and beam quality. For astronomical observation equipment, it focuses weak celestial light signals for high-resolution imaging. The mirror also finds use in quantum optics experiments, semiconductor lithography and precision metrology instruments, providing reliable ultra-high reflectivity and focusing performance for the most demanding applications.
Customized Services: Meeting Personalized Needs
As a leading manufacturer of ultra-high precision optical components, Ultraopto provides fully customized 99.999% concave reflecting mirror solutions to meet your unique application requirements. Our professional R&D team can tailor key parameters including target wavelength (UV to IR), curvature radius, and diameter (from 10mm to 150mm+). surface accuracy and coating design.
We support custom substrate materials for specific environmental needs and can optimize laser damage threshold for high-power applications. All custom mirrors undergo multi-stage strict quality inspection, including reflectivity measurement, surface accuracy verification, LIDT testing and environmental stability assessment, with a detailed quality report provided to ensure compliance with your design specifications.
Quality Assurance and Technical Support:
Your Trusted Choice Backed by advanced optical manufacturing technology and a complete quality control system, Ultraopto ensures stable batch supply and consistent product quality. Our production processes adhere to international high-precision optical component standards, with each mirror subjected to interferometer testing for surface accuracy and spectrophotometer analysis for reflectivity.
We provide professional technical consultation on mirror selection, system integration and performance optimization, In addition to long-term after-sales support to address your application challenges, Ultraopto’s 99.999% Concave Reflecting Mirror offers unparalleled performance and reliability, whether you need standard products for scientific research or custom solutions for cutting-edge industrial systems. For more detailed technical parameters, product quotation information or custom design solutions for our Ultraopto 99.999% Concave Reflecting Mirror, please contact our professional sales and technical team through the official website, and we will provide you with efficient, personalized and professional optical solutions.
