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25mm Dia., 980nm Laser Line Longpass Filter

Laser Line Longpass Filters

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Stock #47-509 3-5 days
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S$1,113.60
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S$1,113.60
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Specifications

General

Type:
Longpass Filter
Angle Tuning Range, for 0 - 8° Shift:
-0.3% of Laser Wavelength

Physical & Mechanical Properties

Diameter (mm):
25.00 +0.0/-0.1
Clear Aperture CA (mm):
22
Thickness Tolerance (mm):
±0.1
Clear Aperture (%):
88

Optical Properties

Angle of Incidence (°):
0 ±2
Bandwidth (nm):
>1000
OD 6 Blocking Wavelength Range (nm):
770 - 980
Optical Density OD (Average):
≥6.0
Design Wavelength DWL (nm):
980
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
Fused Silica (Corning 7980)
Coating:
Hard Coated
Surface Quality:
60-40
Transmission (%):
93.00
Transmission Wavelength (nm):
992.7 - 2000
Edge Steepness (nm):
4.90
Transition Width (nm):
<9.8
Laser Blocking Wavelength (nm):
980
Damage Threshold, By Design: Damage threshold for optical components varies by substrate material and coating. Click here to learn more about this specification.
0.5 J/cm2 @ 266nm, 10ns, 10Hz
1 J/cm2 @ 532nm, 10ns, 10Hz

Threading & Mounting

Mount Thickness (mm):
3.5

Environmental & Durability Factors

Durability:
Environmental: MIL-STD-810F, Physical: MIL-C-48497A
Temperature Dependence (ppm/°C):
<5

Regulatory Compliance

RoHS 2015:
Compliant
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Reach 209:
Compliant
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Certificate of Conformance:
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Product Details

  • Up to 93% Transmission to Detect Weak Signals
  • Deep > OD 6 Blocking for Maximum Laser Rejection
  • Ideal for Raman Spectroscopy, Confocal Microscopy, and Biotech Instrumentation
  • Unrivaled Performance and Lifetime

Our Laser Line Longpass filters offer unprecedented performance in longpass laser edge filter applications. The steep edges (measured from an optical density of 6.0 to a transmission of 50%) make it possible to measure even the smallest Raman shifts, making these filters a superior alternative to costly holographic notch filters for Stokes Raman scattering measurements. Compared to notch filters, these edge filters offer better transmission, higher laser line blocking, and steeper edges, permitting measurement of Raman signals extremely close to the laser line. The large bandwidths and exceptional transmission permit these filters to be used in even the most demanding imaging applications.

Technical Information

Compatible Mounts