lossless beam shaping for multi-kW
lasers by focusing in multiple foci
Applications:

| Description | Afocal multi-focal optics: Providing 3 separate foci along the optical axis near focus of the focusing lens, to be located between the collimator and the focusing lens distances between foci depend on focal length of the focusing lens, variable balance of energy portions in foci, theoretically lossless beam shaping |
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| Number of foci | 3 | |||||
| ΔF, mm 3 foci layout |
f ’, mm (lens) | 100 | 150 | 200 | 250 | 345 |
| ΔF, mm | 2.6 - 2.6 | 5.8 - 5.8 | 10.4 - 10.4 | 16.3 - 16.3 | 31.1 - 31.1 | |
| Input | Collimated beam, divergence within ± 5 mrad | |||||
| Clear Aperture, mm | 30 | |||||
| Laser | - TEM00 (single mode) and multimode, any M² - CW or pulsed - Recommended maximum average power 6 kW - Fluence up to 50 mJ/cm² by 5 ns pulses |
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| Spectral band | 1020 - 1100 nm, other wavelengths on request | |||||
| Transmission @ 1070 nm | > 98% | |||||
| Angular field of view | ± 1° | |||||
| Adjustment Ring | Used to vary balance of energy portions in foci | |||||
| Working Distance | focal plane of the focusing lens, for example F-Θ lens | |||||
| Mounting | Internal threads M47x0.75 at entrance and exit | |||||
| Water cooling | by 6-1/8 fittings | |||||
| Mounting | M27x1, at entrance and exit | |||||
| Diameter | 71 mm | |||||
| Length | 56 mm | |||||
| Weight | 0.45 kg | |||||