Motorized beam expander features x1 to x4 range, that can be continuously zoomed along the range. Product is available for 1-st, 2-nd & 3-rd harmonics of both Neodymium and Ytterbium laser lines. Divergence adjustment solution is embedded in the system to allow for smooth and fine divergence adjustment compensation, which is crucial in laser machining process fine-tuning.

Expander is designed to comply strict stability, longevity, and robustness requirements that are inflicted by industrial lasers applications, which makes it suitable for both – industrial and demanding scientific use.

The main features of the product:

• System lifetime >2.5M cycles
• Diffraction limited performance for ≥Ø4.5 mm beam in whole expansion range even at λ=343 nm
• Ability to sustain high laser beam energy, therefore extend laser system uptime
• Collimation is maintained during zooming

• Only 7.5mm on-axis dielectric thickness makes sure device introduces minimum GDD (Group Delay Dispersion).O
• Compatible with 50 fs and shorter pulses

The product is available for all 3 harmonics – IR, GREEN  & UV for both – Neodymium and Ytterbium lasers. 
Divergence adjustment mechanism provides smooth and fine divergence adjustment compensation, and fine  is crucial in laser machining process fine-tuning.

Beam expander expander is designed to comply strict stability, longevity, and robustness requirements imposed by industrial lasers applications, which makes it suitable for both – industrial and demanding scientific use.

There are  two options available - open-loop and closed-loop. From construction perspective both options are almost identical, except closed loop model has integrated lens position encoders, which is additional layer of assurance to guarantee precision & repeatability to already reliable system. Although both systems have the same precision/repeatability spec, closed loop system provides real time data of lens' positions, which is demanded by the most precise applications

It is advised to consider high power beam expander design if average power exceeds the following values:

• 1st harmonic >100W;
• 2nd harmonic  >50W;
• 3rd harmonic  >10W.

LIDT in ns regimes:

• >30 J/cm² @ 1064 nm, 10 ns, 100 Hz
• >20 J/cm² @ 532 nm, 10 ns, 100 Hz
• >10 J/cm² @ 355 nm, 10 ns, 10 Hz

LIDT with ultrafast pulses:

• >3.7 J/cm² @ 1030 nm, 10 ps, 10 kHz
• >1.8 J/cm² @ 515 nm, 10 ps, 10 kHz
• >0.3 J/cm² @ 343 nm, 1 ps, 1 kHz