LP02-257RU-25

257 nm RazorEdge® ultrasteep long-pass edge filter

Product Code Description Lead Time Price Quantity Buy / Get Quote
LP02-257RU-25 257 nm RazorEdge® ultrasteep long-pass edge filter Please Call £1013.00
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Specifications

Angle of Incidence:

0 ± 2 °

Blocking Band:

ODabs > 6 257.3 nm

Blocking Band:

ODavg > 6 202 – 257.3 nm (typical)

Clear Aperture:

≥ 22 mm

Cone Half-angle:

Edge Steepness:

0.8%

Edge Steepness:

2.1 nm

Edge Steepness:

308.5 cm-1

Edge Wavelength:

259.2nm

Filter Effective Index:

2.23 Understanding 'Effective Index of Refraction' neff

Filter Thickness Tolerance, Mounted:

± 0.1mm

Filter Thickness, Mounted:

3.5mm

Laser Wavelength:

257.3nm

Mounted / Unmounted:

Mounted

Optical Damage Rating:

0.5 J/cm2 @ 266 nm (10 ns pulse width), 1 J/cm2 @ 532 nm (10 ns pulse width)

Orientation:

Arrow on ring indicates preferred direction of propagation of light

Product Type:

RazorEdge Long Pass Edge Filter

Semrock Filter Family:

RazorEdge® Raman Filters

Shape:

round

Size:

25 x 3.5 mm

Substrate Thickness:

2.0mm

Substrate Type:

Fused Silica

Surface Quality (Scratch-Dig):

60-40

Transition Width:

2.6 nm

Transition Width:

385 cm-1

Transmission Band:

Tavg > 90% 263 – 580.4 nm

Transverse Dimensions, Diameter:

25mm

Transverse Tolerance, Mounted:

+ 0.0 / - 0.1 mm

RazorEdge filters allow you to see the weakest signals closer to the laser line, especially for Raman spectroscopy applications. With their deep laser-line blocking, ultrawide and low-ripple passbands, hard-coated reliability, and high laser damage threshold, they offer lasting performance and value.