High Power Fixed Beam Expander
A fixed expansion ratio laser beam expander for high power applications, featuring four main advantages over the competition:
- Large input aperture
- Fine divergence adjustment
- Sliding lens design
- Hard locking
The fixed beam expander is available for 1st, 2nd, and 3rd harmonics of both Neodymium and Ytterbium laser lines. The divergence adjustment solution is embedded in the system to allow for smooth and fine divergence adjustment compensation, which is crucial in the laser machining process fine-tuning.
The expander is designed to comply with strict stability and robustness requirements that are imposed by industrial laser applications, making it suitable for both industrial and demanding scientific use. The hard locking function allows locking the lenses in place, making the beam expander resistant to high loads from acceleration and deceleration when it is mounted onto moving parts.
It is advised to consider a high power beam expander design if average power exceeds the following values:
1st harmonic: >100W
2nd harmonic: >50W
3rd harmonic: >10W
Features & Benefits:
- Diffraction limited performance
- Fixed beam expansion products range from 0.8x to 2.4x
- 343, 355, 515, 532, 1030, 1064 nm
- Divergence adjustment with sliding lens design
- <100 µrad beam wander
- No internal foci
- LIDT: >25 J/cm2 @ 1064 nm, 10 ns, 100 Hz, >10 J/cm2 @ 532 nm, 10 ns, 100 Hz, >5 J/cm2 @ 355 nm, 10 ns, 100 Hz
Applications:
- Laser marking/engraving
- Laser microfabrication with moderate powers (e.g. surface structuring, 2 photon polymerisation, cutting)
