Excellent
91°C+159°C
Todd DunningMAUnited States
Optical Materials for Laser SystemsBirch Laser Cleaning Settings
The key with Birch lies in its notable porosity, which we've found makes it more absorbent to laser energy than denser hardwoods. This property allows the process to remove surface contaminants and restore natural grain effectively, but it also increases the risk of uneven heating if not managed carefully. We typically start with reduced power levels to prevent charring in those open pores, gradually increasing as the cleaning progresses to expose underlying layers without compromising structural integrity. In our experience, this approach improves adhesion removal in applications like furniture manufacturing or architectural restoration, where preserving the wood's flexibility is essential. Watch for localized discoloration mid-process, and adjust scan speeds upward to reduce dwell time on porous areas, ensuring the material's moderate strength holds up across multiple passes.
Birch Machine Settings
Power Range
45
W
1
45
120
Wavelength
1,064
nm
355
1,064
1.1e4
Spot Size
80
μm
0.1
80
500
Repetition Rate
50
kHz
1
50
200
Energy Density
4.5
J/cm²
0.1
4.5
20
Pulse Width
12
ns
0.1
12
1,000
Scan Speed
500
mm/s
10
500
5,000
Pass Count
2
passes
1
2
10
Overlap Ratio
50
%
10
50
90
Birch Material Safety
Shows damage risk across parameter space. Green = safe, Red = damage danger.
Pulse
DANGER
Fluence:17.90 J/cm²
From optimal:58%
Pulse Duration (ns)
1000
750
500
250
0
1
21
41
61
80
100
120
Birch Energy Coupling
Shows laser energy transfer efficiency. Green = high coupling (energy absorbed), Red = poor coupling (energy reflected).
Pulse
MODERATE
Fluence:— J/cm²
From optimal:42%
Pulse Duration (ns)
1000
750
500
250
0
1
21
41
61
80
100
120
Birch Thermal Stress Risk
Shows thermal stress and distortion risk. Green = low stress risk, Red = high stress/warping/cracking risk.
Pulse
ELEVATED
Fluence:— J/cm²
From optimal:46%
Pulse Duration (ns)
1000
750
500
250
0
1
21
41
61
80
100
120
Birch Cleaning Efficiency
Shows cleaning performance across parameter space. Green = optimal effectiveness, Red = ineffective.
Pulse
MODERATE
Fluence:17.90 J/cm²
From optimal:38%
Pulse Duration (ns)
1000
750
500
250
0
1
21
41
61
80
100
120
Birch Heat Buildup
See if your multi-pass cleaning will overheat and damage the material
Heat Safety
100%40%
Heat Control
86%25%
Cooling Efficiency
83%20%
Pass Optimization
66%15%
📈 Heat Profile
Safe (<150°C)
Damage (>250°C)
🔧 Laser Settings
Pulse Energy:900.00 mJ
Total Sim Time:60.4s
🌡️ Live Temperature
20°C
✅ Safe
Pass 1 of 2
Time: 0.0s / 60.4s
▶️ Simulation Controls
Diagnostic & Prevention Center
Proactive strategies and reactive solutions for birch
🌡️thermal management
Heat accumulation
Impact: Excessive heat can damage substrate or alter material properties
Solutions:
- ✓Reduce repetition rate
- ✓Increase scan speed
- ✓Add cooling time between passes
Prevention: Monitor surface temperature and adjust parameters accordingly
🔍surface characteristics
Variable surface roughness
Impact: Inconsistent cleaning results across different surface textures
Solutions:
- ✓Adjust energy density based on surface condition
- ✓Use multiple passes with progressive settings
- ✓Pre-characterize surface before cleaning
Prevention: Standardize surface preparation procedures
Birch Dataset Download
Parameter Relationships
Shows how changing one parameter physically affects others. Click any node to see its downstream impacts and role.
Power Range
Amplifies damage risk in Pulse Width and Energy Density. Keep low to maintain safety margins.
Spot Size
Same power in a smaller spot creates much higher energy density.
Energy Density
Higher power delivers more energy per pulse, removing more material.
Pulse Width
More power means higher peak intensity. Too much can damage the material.
Pass Count
Using more passes means you can use lower power and still get the job done.
