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All Products / Optics / Optical Filters / Longpass Filters / Raman Longpass Edge Filters
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TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. Learn More

488nm, 25mm Diameter, Raman Edge Filter

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Stock #86-240 3-4 days
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€730,00
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€730,00
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Specifications

General

Type:
Longpass Filter
Note:
Bandwidth (nm): >600

Physical & Mechanical Properties

Diameter (mm):
25.00 +0.0/-0.1
Thickness Tolerance (mm):
+0.1/-0.1
Clear Aperture (%):
>80

Optical Properties

Angle of Incidence (°):
0 ±2
Optical Density OD (Average):
≥6.0
Cut-On Wavelength (nm):
492.90
Design Wavelength DWL (nm):
488
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):
394 - 488
Surface Quality:
60-40
Transmission (%):
>93
Transition Width (nm):
<4.9
Transmitted Wavefront, RMS:
<λ/4 @ 633nm
Coating Specification:
Tavg ≥93% @ 494.3 - 1100.8nm
Wavelength Range (nm):
394 - 1101
Laser Blocking Wavelength (nm):
488.00

Threading & Mounting

Mount Thickness (mm):
3.5

Environmental & Durability Factors

Durability:
Environmental: MIL-STD-810F
Physical: MIL-C-48497A

Regulatory Compliance

RoHS 2015:
Compliant
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Certificate of Conformance:
View
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Reach 242:
Compliant
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Product Details

  • High Transmission for Detecting Weak Signals
  • Deep Blocking for Maximum Laser Rejection
  • Ideal for Raman Spectroscopy or Life Science Instrumentation 

TECHSPEC® Raman Longpass Edge Filters are single filter solutions for reducing spectral noise in Stokes shift applications. These filters are designed to create sharp transitions between transmitted Raman signals and blocked laser wavelengths. Designed to detect even the smallest Raman shifts, TECHSPEC Raman Longpass Edge Filters are ideal for integration into Raman spectroscopy or confocal microscopy systems. The hard coated design offers superior transmission characteristics than comparable traditional coated filters.

Custom

Edmund Optics offers comprehensive custom manufacturing services for optical and imaging components tailored to your specific application requirements. Whether in the prototyping phase or preparing for full-scale production, we provide flexible solutions to meet your needs. Our experienced engineers are here to assist—from concept to completion.

Our capabilities include:

  • Custom dimensions, materials, coatings, and more
  • High-precision surface quality and flatness
  • Tight tolerances and complex geometries
  • Scalable production—from prototype to volume

Learn more about our custom manufacturing capabilities or submit an inquiry here.

Compatible Mounts