785 nm RazorEdge® ultrasteep long-pass edge filter

Size

Clear

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.

Optical Specifications
Transmission Band	T_avg > 93% 790.1 – 1770.7 nm
Laser Wavelength	785 nm
Edge Wavelength	786.7 nm
Blocking Band	OD_avg > 6 638 – 785 nm (typical) OD > 6 785 nm
Transition Width	3.9 nm 63 cm-1
Edge Steepness	0.002 1.6 nm 25.4 cm-1

General Specifications
Angle of Incidence	0 ± 2 °
Cone Half-angle	5 °
Filter Effective Index	1.9 Understanding 'Effective Index of Refraction' n_eff
Optical Damage Rating	0.5 J/cm² @ 266 nm (10 ns pulse width),1 J/ @ 53 cm² 2 nm (10 ns pulse width)

Physical Specifications (for standard parts - please contact us for custom sizes)
Transverse Dimensions, Diameter	25 mm
Filter Thickness, Mounted	3.5 mm
Filter Thickness Tolerance, Mounted	± 0.1 mm
Filter Thickness, Unmounted	2.0 mm
Filter Thickness Tolerance, Unmounted	± 0.1 mm
Clear Aperture	≥ 22 mm
Surface Quality (Scratch-Dig)	60-40
Substrate Type	Fused Silica
Orientation	Arrow on ring is preferred direction of propagation of light