785 nm Verona™ long-pass Raman edge filter

Size

Clear

Verona™ improved transition width and low ripple enables you to collect more Raman signal closer to the laser line. We offer deep blocking at the laser line and high transmission. All our measurements and specifications are backed by the KolaDeep™ Spectral Measurement System.

Optical Specifications
Transmission Band	T_avg > 93% 788.9 – 1770.7 nm
Transmission Ripple	Tripple < 2% 788.9 – 1770.7
Laser Wavelength	785 nm
Blocking Band	OD_avg > 6 650 – 785 nm OD > 6 785 nm
Transition Width	< 1.6 from 785 to T = 50% < 25.9 cm-1

General Specifications
Angle of Incidence	0 ± 2 °
Cone Half-angle	0 °
Filter Effective Index	1.76 Understanding ‘Effective Index of Refraction’ n_eff
Optical Damage Rating	Testing has proven to show no signs of degradation when exposed to at least 6.0 W of power from an unfiltered xenon arc lamp over a 25 mm diameter (corresponding to 1.2 W/cm²) for over 500 hrs.

Physical Specifications (for standard parts – please contact us for custom sizes)
Transverse Dimensions, Diameter	12.5 mm
Filter Thickness, Mounted	5 mm
Filter Thickness Tolerance, Mounted	± 0.1 mm
Filter Thickness, Unmounted	3.0 mm
Filter Thickness Tolerance, Unmounted	± 0.1 mm
Clear Aperture	≥ 10 mm
Surface Quality (Scratch-Dig)	60-40