Selecting and using a Beam Quality Enchancement System
The Beam Quality Enhancement System (BQES) is a passive optical component designed to improve the mode quality of imperfect or multimode laser beams. It works by introducing an adjustable iris between two precision lenses, allowing selective filtering of higher-order or unstable edge modes.
By shaping the beam’s spatial profile, the BQES enhances beam symmetry, reduces hot spots, and improves focus consistency — especially useful for applications like fine welding, drilling, and precision heating. It is a simple, mechanical method of improving beam shape without adding complexity to the laser source.
Specing a Beam Quality Enhancement System
1. Choose the Aperture Series
Select a unit that matches your system’s beam delivery series:
- Available in 19 mm, 25 mm, and 38 mm
The internal aperture and mechanical threads are matched to standard Haas tubing and mount sizes.
2. Check the Clear Aperture and Adjustment Range
Each BQES includes:
- Two lens assemblies
- An adjustable iris between them
Make sure the clear aperture and iris adjustment range are compatible with your beam diameter. As a rule of thumb, your beam should fill 50–80% of the maximum iris opening for optimal effect.
3. Verify Wavelength Compatibility
Although the BQES is optomechanically universal, the lenses inside are wavelength-specific.
Select optics designed for your laser type (e.g., fiber, CO₂, diode, UV).
If unsure, contact Haas to confirm the correct internal lens set for your wavelength.