| Item # | K2WB1(/M) | K2WL1(/M) | K2XE1(/M) | K2XL1(/M) | K2XE2(/M) |
| Wavelength Range | 420 - 730 nm | 430 - 730 nm | 650 - 1100 nm |
| Bandwidth (FWHM)a | 35 nm at 550 nm | 10 nm at 550 nm | 17 nm at 850 nm |
| Switching Speedb | < 150 ms | < 250 ms | < 760 ms |
| Clear Aperture | Ø20 mm | Ø35 mm | Ø20 mm | Ø35 mm | Ø20 mm |
| Polarized Transmissionc | 45% at 550 nm | 17% at 550 nm | 44% at 850 nm |
| Out-of-Band Blocking | OD > 2 |
| Minimum Incremental Step Size | 1 nm |
| Tuning Accuracy | ±FWHM/10 |
| Field of View | ±6° |
| Wavelength Uniformity | FWHM/8 | FWHM/4 |
| Damage Threshold | Pulsed (ns) | 0.1 J/cm2 | 0.1 J/cm2 (810 nm, 10 Hz, 7.2 ns, Ø216 µm) |
| Pulsed (fs) | 0.02 J/cm2 (532 nm, 76 Hz, 100 fs, Ø162 µm) | 0.006 J/cm2 (800 nm, 100 Hz, 36.4 fs, Ø189 µm) |
| CW | 0.8 W/cmd (532 nm, Ø0.471 mm) | - |
| Filter Head Dimensions | 52.6 mm x 52.6 mm x 48.5 mm (2.07" x 2.07" x 1.91") | 79.0 mm x 79.0 mm x 39.5 mm (3.11" x 3.11" x 1.56") | 52.6 mm x 52.6 mm x 78.5 mm (2.07" x 2.07" x 3.09") | 79.0 mm x 79.0 mm x 60.5 mm (3.11" x 3.11" x 2.38") | 52.6 mm x 52.6 mm x 87.5 mm (2.07" x 2.07" x 3.44") |
| Filter Head Front/Rear Threading | SM1 (1.035"-40) Internal Threads | SM2 (2.035"-40) Internal Threads | SM1 (1.035"-40) Internal Threads | SM2 (2.035"-40) Internal Threads | SM1 (1.035"-40) Internal Threads |
| Filter Head Mounting Options | 8-32 (M4 x 0.7) Tap for Post Mounting (3 Places) 4-40 Taps for Cage System |
| Operating Temperature | 15 to 40 °C |
| Storage Temperature | -15 to 65 °C |