1250nm 12.5mm Dia, High Performance Longpass Filter

Product Details Cut-On Slope <1% Rejection OD ≥ 4.0 ≥91% Transmission in Pass Band Variety of OD 4.0 Longpass Filter Kits Available TECHSPEC High Performance OD 4.0 Longpass Filters feature high transmission in the pass band combined with superior blocking in the rejection band. Due to a rejection band optical density of 4.0 combined with >91% in the pass band, these filters are ideal for a wide variety of applications. TECHSPEC High Performance OD 4.0 Longpass Filters are hard coated, with a hard dielectric sputtered as the first surface and AR coating as the second. Eliminate stray light by creating custom bandpass filters when combined with TECHSPEC High Performance Shortpass Filters . Note: These filters are optimized for high spectral performance rather than high Laser Induced Damage Thresholds (LIDT). A typical LIDT for these filters is 1 J/cm 2 @ 532nm, 10ns. Please contact us if you require a filter with a higher LIDT value. TECHSPEC Rotating Filter Wheel can be used for applications requiring a variety of filters. Specifications General Type: Longpass Filter Note: Arrow on part indicates filter coated surface. Physical & Mechanical Properties Diameter (mm): 12.50 +0.0/-0.2 Thickness (mm): 3.00 ±0.1 Clear Aperture (%): >80 Physical Durability: Adhesion per MIL-PRF-13830B, Section C.4.5.12 Moderate abrasion per MIL-PRF-13830B, Section C.4.5.11 Cleaning per MIL-C-48497A Section 4.5.4.2 Optical Properties Angle of Incidence (°): 0 Optical Density OD (Average): ≥4.0 Cut-On Wavelength (nm): 1,250.00 Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More Fused Silica (Corning 7980) Coating: Hard Coated Rejection Wavelength (nm): 200 – 1230 Surface Quality: 60-40 Transmission (%): ≥91 Transmission Wavelength (nm): 1270 – 1650 Transmitted Wavefront, RMS: ≤λ/4 @ 633nm (prior to coating) Cut-On Tolerance (%): ±1 Slope Factor (%): <1 Coating Specification: Surface 1: Hard Dielectric Sputtered Surface 2: AR Coated Wavelength Range (nm): 200 - 1650 Environmental & Durability Factors Environmental Durability: Humidity per MIL-STD-810H, Section 507.6 Temperature per MIL-STD-810H, Section 501.7 and 502.7 Regulatory Compliance RoHS 2015: Compliant × Certificate of Conformance: View × Reach 253: Compliant ×