Name: 785nm, 50mm Diameter, OD 4.0 Notch Filter
Brand: TECHSPEC
SKU: 67-130
Price: $865.00

Diameter (mm):

50.00 +0.00/-0.10

Optical Density OD (Average):

≥4.0

Clear Aperture CA (mm):

42.5

Center Wavelength CWL (nm):

785.00

Design Wavelength DWL (nm):

785

Full Width-Half Max FWHM (nm):

39.20

Coating:

Hard Coated

Surface Quality:

60-40

Thickness (mm):

5.00

Thickness Tolerance (mm):

±0.1

Transmission (%):

Transmission Wavelength (nm):

585 - 1045

Type:

Notch Filter

Construction:

Mounted in Black Anodized Ring

Reflection at CWL (%):

Transmitted Wavefront, RMS:

<1λ

Mount Thickness (mm):

5.0

Substrate Thickness (mm):

3.5 ±0.5

Regulatory Compliance

RoHS 2015:

Compliant

Certificate of Conformance:

View

Reach 233:

Compliant

Product Family Description

>OD 4.0 Rejection of Laser Wavelength from 355nm to 1064nm
Broad Transmission Range
OD 6.0 Notch Filters Also Available
Low Cost Alternative to Rugate Notch Filters

TECHSPEC® OD 4.0 Notch Filters are low-cost alternatives to Rugate Notch Filters. TECHSPEC OD 4.0 Notch Filters feature narrow rejection bands of just ±2.5% of the center wavelength while offering greater than 99% reflection of the laser wavelength. These optical filters are hard coated to guarantee performance that will not degrade with time, temperature, or humidity. Each optical filter has been mounted in a black anodized ring that has been engraved to ease filter handling, identification, and orientation.

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/cm² @ 532nm, 10ns. Please contact us if you require a filter with a higher LIDT value.

This graph is an example of a standard notch filter transmission curve. For specific wavelength data, please refer to the curve PDF attached to each respective part.

All mounted TECHSPEC® Optical Filters have an arrow on the side of the mount that points to the filter-coated surface for quick reference. Filter oriented such that arrow points to filter coated surface S1. Anti-reflective (AR) coating is applied to S2.

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