Zinc Selenide Optical Prism

Zinc selenide (ZnSe) is a core high-performance crystal material designed for CO₂ laser systems and mid- and far-infrared optical systems. Its extremely broad 600–18000nm transmission band, very low absorption at the 10.6μm CO₂ laser band, excellent thermal stability, and optical homogeneity make it an indispensable prism material for industrial laser processing, infrared thermal imaging, medical laser equipment, and infrared detection. Scysgx uses high-purity CVD zinc selenide substrates and more than 260 precision processing machines and 65 specialized inspection instruments to provide a complete closed-loop production line covering cutting, grinding, polishing, coating, and quality inspection. Zinc selenide optical prisms are available as right-angle, Dove, pentagonal, roof, beamsplitting, polarizing, and custom prisms, with side dimensions of 1–1000mm and hypotenuse dimensions of 1–600mm. Commercial-grade and high-precision options offer flatness up to λ/10. Specialized 10.6μm antireflection, DLC diamond-like carbon, and high-laser-damage-threshold coatings are available, providing highly precise, stable prism solutions for high-power CO₂ lasers and mid- and far-infrared optical systems. Some standard specifications are stocked long term for rapid delivery.

High-power CO₂ lasers: optical-path prisms for cutting, welding, marking, drilling and engraving, meeting 10.6μm beam-turning and splitting needs. Infrared thermal imaging: optical-path prisms for industrial thermometry, security thermal cameras, vehicle night vision and infrared detectors in mid-/far-IR bands. Medical lasers: optical-path prisms for laser therapy and noninvasive infrared testing, meeting cleanliness and stability requirements. Industrial monitoring: optical-path prisms for infrared spectrometers, high-temperature monitoring and oil/gas exploration instruments. Research/metrology: optical-path prisms for university laboratories, astronomical optics, precision infrared spectrometers and metrology instruments.

Dedicated high CO₂-laser transmission: excellent transmission and extremely low absorption at 10.6μm for CO₂ lasers greatly reduce energy losses in high-power CO₂ equipment. Broadband mid-/far-IR transmission: stable, uniform visible-to-far-IR transmission over 600–18000nm (0.6–18μm), meeting multiband infrared-system needs. Thermal stability for high-power operation: low expansion and no significant thermal deformation under high-power laser operation maintain long-term optical stability. Ultraprecision planar fabrication: high-precision flatness to λ/10, angular tolerance down to 2″–30″ and surface quality to 10-5, without scratches or defects, ensure stable optical transmission. Full structure/specification customization: right-angle, Dove, pentagonal, roof, beamsplitter, polarizing and irregular structures, with side dimensions 1–1000mm and hypotenuse dimensions 1–600mm, meet diverse optical-path designs. Multiple coatings: dedicated 10.6μm AR, DLC diamond-like carbon, mid-/far-IR AR and high-laser-damage-threshold coatings improve transmission, wear resistance and laser tolerance. Two grades: commercial for general industry and high precision for medical/research applications, balancing performance and cost. IV. Core material advantages. Spectral coverage: high broadband transmission over 600nm (visible)–18000nm (far-IR), with outstanding 10.6μm CO₂-laser performance, a preferred laser-processing material. Optical properties: refractive index n_d=2.403, extremely low infrared scattering and excellent optical homogeneity for precision infrared imaging and laser optics. Physical properties: density 5.27g/cm³, Knoop hardness 120, moderate strength, excellent machinability and easy ultraprecision polishing and irregular fabrication for diverse prism designs. Thermal properties: expansion coefficient 7.1×10⁻⁶/℃, softening temperature 250℃, good stability under high-power lasers without significant thermal lensing. Application advantages: low absorption and high transmission make it a standard prism material for high-power CO₂ lasers, also suitable for infrared thermal imaging and medical lasers. V. Structures and customization. 1. Standard prisms: right-angle, Dove, pentagonal, roof, beamsplitter, polarizing, rhomboid and corner-cube prisms. 2. Customization: side/hypotenuse dimensions and optimized tolerance grades fit optical-system space; special-angle and irregular prisms can have arbitrary angles to suit optical-path designs; chamfering, edge grinding, ultraclean polishing and custom cleaning meet cleanroom/special-environment requirements; band- and function-specific 10.6μm AR, 3–5μm/8–12μm/2–14μm mid-/far-IR AR, DLC and other coatings improve optical performance and durability. VI. Standard coatings. Dedicated CO₂-laser AR: 10.6μm antireflection greatly improves transmission and reduces reflection losses in high-power CO₂ equipment. Mid-/far-IR AR: dedicated 3–5μm, 7–14μm and 2–14μm antireflection for infrared thermal imaging and detection. DLC: improves surface hardness, contamination/scratch resistance and prism life in industrial processing and outdoor environments. High-laser-damage-threshold coatings improve strong-laser tolerance and protect core optics in high-power CO₂ systems. VIII. Yasi Optical advantages. Fully controlled in-house closed-loop blank cutting, milling/grinding, polishing, angle machining, coating, inspection, cleaning and packaging, without outsourcing and with full traceability. Precision equipment: ZYGO interferometers, precision goniometers, optical dimensional measuring instruments and surface-quality testers control all parameters and ensure flatness, angular tolerance and transmission compliance. Large/irregular fabrication: batch production of 1–1000mm large-aperture prisms and custom irregular/special-angle prisms meet high-end optical-path design needs. One-stop customization: structure, dimensions, angles, tolerances and coatings, with optical-path adaptation support and dedicated nonstandard solutions. Two-grade delivery: commercial/high-precision grades and stable small/large batches for general industry and advanced research/medical use. Stock/delivery: some standard products remain stocked for rapid delivery; controlled custom-order lead times meet schedules. IX. Quality assurance. All zinc selenide prisms undergo ZYGO interferometric flatness, precision-goniometer angle, optical dimensional, infrared transmission and surface-quality inspections to ensure 100% compliance. Automated ultrasonic ultraclean washing and vacuum moisture-proof packaging ensure transport and long-term stability for cleanrooms and harsh environments.