Y2: High Energy Nd YAG Laser Mirrors, 523-532nm
Y2: High Energy Nd YAG Laser Mirrors, 523-532nm
High reflectivity and high laser damage threshold are delivered in these durable, dielectric coated mirrors for Nd:YAG and Nd:YLF laser use. Available optimized at 0° or 45° on flat substrates, they offer > 99.6 - 99.9% reflectivity at the second harmonic of both Nd:YAG (532nm) and Nd: YLF: 523nm wavelengths depending on polarization. Custom mirrors are available upon request.
- Product Code: Y1, Y2, Y3, Y4
- Substrate Material: Standard Grade Corning 7980 1-D (Fused Silica)
- Diameter Tolerance: +0/-0.25mm
- Thickness Tolerance: ±0.25mm
- Wedge: ≤ 5 arc minutes (flat substrates only)
- Chamfer: Ø ≤ 50.8mm: 0.35mm leg width at 45° nominal
Ø > 50.8mm: 0.85mm leg width at 45° nominal - Concentricity: ±0.05mm (spherical substrates only)
- Radius Tolerance: ±0.5% (spherical substrates only)
- S1 Surface Figure: < λ/10 p-v at 633nm before coating; after coating on select substrates
- S1 Surface Quality: 10-5 scratch-dig per MIL-PRF-13830b (at 100W)
- S2 Surface Quality: Commercial polish
- Clear Aperture: ≥ 85% of central diameter
- Angle of Incidence: 0° or 45° options
- Reflectance: R ≥ 99.9% at 0°
R ≥ 99.6% at 45°, P-Pol
R ≥ 99.8% at 45°, UNP
R ≥ 99.9% at 45°, S-Pol - Adhesion and Durability: Per MIL-C-675c and MIL-C-48497a
- Damage Threshold: Pulsed:
25 J/cm2, 20ns, 20Hz at 1064nm
20 J/cm2, 20ns, 20Hz at 532nm
15 J/cm2, 20ns, 20Hz at 355nm
10 J/cm2, 20ns, 20Hz at 266nm
cw: 10 MW/cm2 at 1064nm