Name: 25mm Dia., 355nm Laser Line Longpass Filter
SKU: 47-499
Price: ₹64,859

25mm Dia., 355nm Laser Line Longpass Filter

Laser Line Longpass Filters

Stock #47-499 10 to 12 days

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₹64,859

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₹64,859

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Diameter (mm):

25.00 +0.0/-0.1

Angle of Incidence (°):

0 ±2

Bandwidth (nm):

>400

OD 6 Blocking Wavelength Range (nm):

200 - 355

Optical Density OD (Average):

≥6.0

Clear Aperture CA (mm):

Design Wavelength DWL (nm):

355

Fused Silica (Corning 7980)

Coating:

Hard Coated

Surface Quality:

60-40

Thickness Tolerance (mm):

±0.1

Transmission (%):

93.00

Transmission Wavelength (nm):

359.6 - 800.8

Type:

Longpass Filter

Edge Steepness (nm):

1.80

Transition Width (nm):

<3.6

Clear Aperture (%):

Durability:

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

Temperature Dependence (ppm/°C):

Angle Tuning Range, for 0 - 8° Shift:

-0.3% of Laser Wavelength

Mount Thickness (mm):

3.5

Laser Blocking Wavelength (nm):

355

0.5 J/cm² @ 266nm, 10ns, 10Hz
1 J/cm² @ 532nm, 10ns, 10Hz

Regulatory Compliance

RoHS 2015:

Compliant

Reach 209:

Compliant

Certificate of Conformance:

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Product Family Description

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.