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594 nm EdgeBasic™ best-value long-pass edge filter

Part Number: BLP01-594R-25

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  • Your filter spectrum may differ slightly from the typical spectrum above, but is certified to meet the optical specifications noted below.
Semrock Optical Filter: BLP01-594R
594 nm EdgeBasic™ best-value long-pass edge filter
EdgeBasic filters offer an ideal combination of performance and value for applications including Raman spectroscopy and fluorescence imaging and measurements. They offer exceptional laser-line blocking and high transmission for Raman applications that do not require measuring the smallest possible Raman shifts and when cost is an issue.
Part NumberSizePrice1Stock StatusQuantity
BLP01-594R-2525 mm x 3.5 mm$385In StockAdd To Cart
BLP01-594R-23.3-D23.3 mm x 2.0 mm
$385Confirmed AROAdd To Cart

Don’t see a size you need? Create your own custom sized part – delivery confirmed ARO.

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Diameter: mmDimension 1: mm
Dimension 2: mm 
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Custom Sizing Limits:
Diameter Range: 5mm - 50.8mm
Rectangular Dimensions: 5mm - 50.8mm

Substrate thickness/tolerance as listed on Specifications tab.
Dimensional tolerances are ±0.1mm for unhoused parts.

For sizes outside the limits listed above, please contact customer service at 1-866-SEMROCK

1) US domestic pricing only. If you are ordering from outside the US, please contact your nearest regional distributor for the correct list price.
Optical Specifications
Transmission Band 1Tavg > 93% 610.9 – 900 nm
Edge Wavelength 1607 nm
Transition Width (nm)14.9 nm
Transition Width (cm-1)411 cm-1
Blocking Band 1ODavg > 5 200 – 275 nm (by design)
Blocking Band 2ODavg > 5 275 - 474.8nm
Blocking Band 3ODabs > 6 474.8 – 594.3 nm

General Filter Specifications
Laser Wavelength 1594 nm
Laser Wavelength 1 (low)593.5 nm
Laser Wavelength 1 (high)594.3 nm
Angle of Incidence0 ± 2 degrees
Cone Half-angle5 degrees
Optical Damage RatingNot tested
Filter Effective Index1.78 Understanding ‘Effective Index of Refraction’ neff

Physical Filter Specifications (applies to standard sized parts; contact us regarding other sizes)
Transverse Dimensions (Diameter)25 mm
Transverse Tolerance (mounted)+ 0.0 / – 0.1 mm
Filter Thickness (Mounted)3.5 mm
Filter Thickness Tolerance (Mounted)± 0.1 mm
Clear Aperture≥ 22 mm
Substrate Thickness (unmounted)2.0 mm
Substrate Thickness Tolerance (unmounted)± 0.1 mm
OrientationArrow on ring indicates preferred direction of propagation of light

Laser Clean-up Filters


591/6 nm BrightLine® single-band bandpass filter

• Tavg > 93% 588 – 594.5 nm
• Center Wavelength of 591 nm and GMBW of 6 nm
• FWHM of 10.0 nm

Custom sizing delivery confirmed ARO (sizing fee applies).
Part # FF01-591/6-25
(Non-US pricing info)

Dichroic Beamsplitters


594 nm laser BrightLine® single-edge laser dichroic beamsplitter

• Laser Dichroic Beamsplitter with edge at 599.5 nm
• Rabs > 94% 593.5 – 594.3 nm
• Ravg > 90% 350 – 593.5 nm
• Tavg > 93% 605 – 1200 nm
• Flatness / RWE: Laser

Custom sizing delivery confirmed ARO (sizing fee applies).
Part # Di02-R594-25x36
(Non-US pricing info)

US domestic pricing only. If you are ordering from outside the US, please contact your nearest regional distributor for the correct list price.
Tech Note
Cleaning Optical FiltersInstructions for cleaning hard coated optical filters
Filter ReliabilityCompares the performance and reliability of hard coated filters to traditional soft-coated filters and provides information about the testing standards for Semrock filters
Measuring Light with Wavelengths & WavenumbersCompares units of wavelength to wavenumbers and provides formulas for calculating wavenumber shift
Laser Damage ThresholdProvides information for calculating laser damage threshold for pulsed and continuous wave lasers
Working with Optical DensityTables to describe the relationship between OD and transmission with tips for quickly calculating OD
Filter Spectra at Non-normal Angles of IncidenceDiscusses how angle tuning affects the spectral response of different types of filters.
Filter Types for Raman Spectroscopy ApplicationsCompares the performance of different combinations of LWP and SWP edge filters, notch and laser line filters for Raman applications
Transition Width & Edge SteepnessDescribes how measurements for edge steepness and transition width differ
Journal Article
Thin-Film Filters for Raman SpectroscopyTuran Erdogan, PhD, and Victor Mizrahi, PhD, Semrock Inc., Spectroscopy, December 2004
Describes the types and functions of filters commonly used in Raman spectroscopy
Raman SpectroscopyAn overview of Raman spectroscopy, including solutions from Semrock and additional learning resources.

594 EdgeBasic Long pass Long-pass Longpass LWP Long-Wave-Pass BLP01-594R 594R BLP01 BLP BLP01-594R-25 BLP01-594R-23.3-D

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