Single Crystal Silicon Super Low Loss Flat Concave Mirror

① Dimension
1)D=φ12.7-φ50.8mm(tolerance±0.1),H=4-8mm D:H>4:1(tolerance±0.5) 2)D50.8-φ100mm(tolerance±0.1),H=10-25mm D:H>4:1(tolerance±0.5)
② Kickoff size:φ7.5-45
③ Coating area size: conventional size D12.7, coating area size 7.5; D25 coating area size 10, other coating area size can be customized
④ Curvature: SR=500-8000(customize),curvature accuracy±0.05%
⑤ Surface accuracy: λ/ 8@632.8nm
⑥ Spherical accuracy:30"-3′
⑦ Roughness: Ra0.12nm (Zygo profilometer) test area 173*173um full frequency measurement
⑧Coating requirement: wavelength 420nm-3000nm, reflection ≥99.999%, loss 2-6ppm, transmission 3-5ppm
Back anti-reflection;
⑦ Material:single crystal silicon
Note: The specific indicators are not limited to the above scope, and can be customized according to user's needs.
Application:Super stable laser, high precision optical detection
Product Description

Single Crystal Silicon Super Low Loss Flat Concave Mirrors for Extreme-Duty Aerospace & Defense Applications

Engineered for mission-critical optical systems, our Single Crystal Silicon Super Low Loss Flat Concave Mirror delivers unmatched performance in aerospace, defense, and high-energy laser applications. Combining ultra-high purity silicon substrates with diamond-polished surfaces (<0.5 nm roughness), these mirrors minimize scattering losses while maintaining λ/10 wavefront accuracy under extreme thermal cycling (-196°C to +300°C). Whether you’re aligning LIDAR arrays or stabilizing satellite laser communication, our mirrors ensure distortion-free performance where failure isn’t an option.

Precision Engineered for Demanding Environments

  • <50 ppm/cm Absorption Loss: Ideal for high-power lasers up to 10 kW/cm², minimizing heat buildup that could distort beams in directed energy systems or laser processing tools, ensuring consistent performance where excessive absorption would degrade precision in cutting or defense applications.
  • CTE Stability (<2.6×10⁻⁶/K): Maintains curvature accuracy across cryogenic to high-temperature ranges, critical for aerospace laser systems and scientific research setups, resisting warping in extreme conditions from space vacuum to industrial furnaces, preserving beam alignment without calibration drifts.
  • Custom Curvature (50–2000mm): Achieve λ/20 surface accuracy for tight beam alignment, tailored to semiconductor lithography and hyperspectral imaging needs, ensuring precise light focusing in EUV chambers or satellite sensors where even minor misalignment would compromise results.

Built for Aerospace Rigors

  • Atomic Oxygen Resistance: Validated in simulated LEO conditions (5×10²⁰ atoms/cm² exposure), ensuring Single Crystal Silicon Super Low Loss Flat Concave Mirror retain <0.12nm Ra smoothness in low Earth orbit—critical for satellite laser terminals where atomic oxygen erosion would degrade reflectivity, preserving signal integrity in inter-satellite links.​
  • Vibration-Tested: Survives 15g RMS shocks (20–2000Hz) without delamination, complementing aerospace laser systems’ sapphire durability to withstand launch vibrations and orbital disturbances, preventing coating failure that could disrupt beam control in defense or communication satellites.​
  • Radiation-Hardened Coatings: Protect against proton/electron flux in GEO orbits, maintaining 99.9% reflectivity at 1550nm despite prolonged radiation exposure—vital for hyperspectral imaging arrays and LCTs, ensuring consistent performance in geostationary missions lasting 10+ years.

Parameters

Specification Value
Dimension

1)D=φ12.7-φ50.8mm(tolerance±0.1),H=4-8mm D:H>4:1(tolerance±0.5)                                              

2)D50.8-φ100mm(tolerance±0.1),H=10-25mm D:H>4:1(tolerance±0.5)

Kickoff size φ7.5-45mm
Coating area Customizable (D12.7: 7.5mm, D25: 10mm)
Curvature SR=500-8000mm (customizable), accuracy ±0.05%
Surface accuracy λ/8 @ 632.8nm
Spherical accuracy 30"-3'
Roughness Ra0.12nm (Zygo profilometer) test area 173*173um full frequency measurement
Coating performance Wavelength: 420-3000nm, Reflection: ≥99.999%, Loss: 2-6ppm, Transmission: 3-5ppm
Material Single crystal silicon

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Where Innovation Meets Application

  • Laser Communication Terminals (LCTs): Ensure inter-satellite links with mirrors that maintain >99.9% reflectivity at 1550 nm, even after 1000+ thermal cycles, leveraging extreme thermal stability to resist temperature swings in space—critical for uninterrupted data transmission between GEO and LEO satellites where signal loss risks mission failure.
  • Directed Energy Systems: Deploy mirrors with multi-layer dielectric coatings that withstand 1 J/cm² @ 1064 nm (10 ns pulses) – proven in DoE-funded testing, paired with rugged construction to endure recoil and vibration, ensuring reliable performance in defense applications where high-energy pulse resistance is non-negotiable.
  • Hyperspectral Imaging Arrays: Minimize wavefront distortion (<λ/8 @ 632.8 nm) for precise spectral analysis in Earth observation satellites, using ultra-smooth surfaces to preserve image integrity, enabling accurate detection of environmental changes and resource mapping from orbit with unmatched clarity. 

Trusted by Global Leaders

Military-Grade Manufacturing

  • ITAR-controlled facilities with Nadcap-accredited metrology
  • Full traceability from crystal orientation to final coating

Proven in Orbit

10,000+ mirrors operational in polar-orbiting SAR satellites since 2018, with zero field failures reported.

Scale with Confidence

For Constellation Programs

  • Volume pricing for orders >500 units
  • AS9100-compliant logistics with 12-week lead times

Custom Coating Solutions

Our engineers will optimize your mirror’s reflectance curve for specific wavelengths (420–3000 nm), achieving losses as low as 2 ppm.

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Have Questions? 

Q: How does this Single Crystal Silicon Super Low Loss Flat Concave Mirror handle cryogenic conditions like deep-space missions?

A: The single crystal silicon structure maintains λ/10 surface accuracy even at -269°C, as validated in NASA-style thermal cycling tests.

Q: What coating options exist for 3–5 μm MWIR applications?

A: We offer gold-enhanced dielectric stacks with >99.95% reflectivity and anti-oxidation barriers for harsh environments.

Q: Can you match legacy satellite mirror geometries?

A: Yes – we’ve successfully reverse-engineered 15+ legacy designs with improved surface roughness (<0.12 nm Ra).

Contact Us

Ready to elevate your optical systems with our Single Crystal Silicon Super Low Loss Flat Concave Mirror? Our team is eager to assist you!

Email: xachaona@163.com

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