Auniontech Custom Aspheric Mirror

Overview

Auniontech Custom Aspheric Mirrors are high-precision optical components engineered for demanding beam steering, focusing, and collimation tasks in photonic systems. Unlike spherical optics, aspheric mirrors eliminate spherical aberration by deviating from constant curvature—enabling diffraction-limited performance across broad spectral ranges (UV to IR). These mirrors operate on fundamental principles of geometric optics and wavefront control: parabolic variants focus collimated incident light to a single point (or collimate point-source emission), while hyperbolic and elliptical configurations support two-mirror telescope designs, interferometric setups, and off-axis beam routing. Their application scope spans laser resonators, astronomical instrumentation, EUV lithography beamlines, free-space optical communications, and concentrated solar thermal collectors—where precise wavefront fidelity, minimal scatter, and thermal/mechanical stability are non-negotiable.

Key Features

• Sub-50 nm PV global surface figure accuracy and ≤25 nm RMS irregularity—achievable via magnetorheological finishing (MRF) and deterministic polishing protocols
• Surface roughness down to 0.5 nm Rq, verified with non-contact optical profilometry and phase-shifting interferometry (PSI)
• Material flexibility: fused silica (for UV transmission and low thermal expansion), single-crystal silicon (for IR applications and high thermal conductivity), and ZERODUR® (near-zero CTE, ideal for space-grade stable mounts)
• Full customization of conic constants (e.g., parabola, hyperbola, ellipse), clear aperture (up to Ø300 mm), thickness, mounting interfaces (kinematic or flexure-based), and edge treatments (chamfered, beveled, or blackened)
• Dual-axis and off-axis configurations supported—enabling compact, vignetting-free optical layouts without central obscuration
• Reflective coatings optimized per application: protected aluminum (250–2000 nm), enhanced aluminum (400–800 nm, R > 92%), dielectric stacks for high-power lasers (e.g., 1064 nm, R > 99.8% at 45° AOI), or custom multi-band designs

Sample Compatibility & Compliance

Auniontech aspheric mirrors comply with international optical manufacturing standards including ISO 10110-5 (surface form tolerances), ISO 14999-2 (interferometric testing methodology), and MIL-PRF-13830B (scratch-dig specifications). All substrates undergo rigorous bulk homogeneity verification and stress birefringence screening prior to coating. Coated mirrors are tested for environmental durability per ISO 9211-4 (adhesion, humidity, abrasion) and laser-induced damage threshold (LIDT) per ISO 21254—reported at 1-on-1 and S-on-1 conditions for CW and pulsed regimes. Documentation includes full metrology reports (Zygo Verifire™ or 4D AccuFiz™ interferograms), coating spectral reflectance curves (Agilent Cary 7000), and material certification (ASTM E1333 for fused silica OH content).

Software & Data Management

Each custom mirror delivery includes a digital metrology package: calibrated interferogram files (.mat or .txt), surface error maps (XYZ point clouds), and coating spectral data in CSV format. Integration-ready outputs support common optical design platforms—including Zemax OpticStudio (ZOS-API compatible), CODE V, and FRED—via native surface sag table import. Traceability is maintained through unique serial-numbered certificates aligned with GLP/GMP documentation frameworks; audit trails include raw test logs, operator IDs, environmental chamber records (temperature/humidity during measurement), and calibration certificates for all metrology hardware (NIST-traceable reference standards).

Applications

• Laser Systems: Off-axis parabolic (OAP) mirrors for ultrafast Ti:sapphire and Yb-fiber amplifier beam transport—minimizing chromatic dispersion and group delay distortion
• Astronomy & Space Optics: Lightweighted ZERODUR® aspheres for Ritchey-Chrétien secondary mirrors and coronagraphic pupil remapping elements
• Industrial Metrology: High-NA reflective objectives in semiconductor wafer inspection tools requiring <λ/20 wavefront error over 0.5 NA
• Solar Energy: Large-format parabolic trough reflectors (fused silica front-surface) with anti-soiling nanocoatings for CSP thermal concentration (≥85% solar-weighted reflectance)
• Biomedical Imaging: Ellipsoidal mirrors in confocal endomicroscopy probes—enabling sub-10 µm lateral resolution at working distances <2 mm
• Quantum Technologies: Ultra-low-scatter silicon aspheres in cavity quantum electrodynamics (cQED) setups, where Rayleigh scattering must remain below 10⁻⁶/sr

FAQ

What tolerance specifications can be guaranteed for custom aspheric mirrors?
Surface figure accuracy is specified per ISO 10110-5: typically ≤50 nm PV global error and ≤25 nm RMS local irregularity; tighter tolerances (≤10 nm RMS) are achievable with extended MRF cycles and additional verification steps.
Do you provide mounting solutions or kinematic interfaces?
Yes—custom kinematic mounts (e.g., three-point flexure, bipod, or gimbal-style) are available with matched thermal expansion coefficients and alignment fiducials; mechanical drawings are provided for integration into optomechanical assemblies.
Can mirrors be supplied with vacuum-compatible coatings and outgassing data?
All dielectric coatings are deposited via ion-assisted e-beam evaporation under high-vacuum conditions (<5×10⁻⁷ Torr); outgassing test reports (per ASTM E595) are included upon request.
Is there lead time variability between fused silica and ZERODUR® substrates?
Standard lead time is 8–12 weeks for fused silica; ZERODUR® requires additional annealing and stress-relief cycles, extending fabrication to 14–18 weeks—though expedited schedules may be negotiated based on capacity.
How is coating durability validated for high-power laser applications?
LIDT validation follows ISO 21254-1: multiple sites are tested at varying fluences (J/cm²) and pulse durations (ns to fs); results include probability-of-damage curves and 0% damage threshold reporting at 1000-shot exposure.