Excellent
108°C+142°C
Ikmanda RoswatiPh.D.Indonesia
Ultrafast Laser Physics and Material InteractionsRedwood Laser Cleaning Settings
We've found that cleaning redwood with lasers requires careful initial setup to avoid surface charring from its porous structure. Start low on power and speed. This softwood, unlike denser hardwoods, absorbs energy quickly but holds heat poorly. In our experience, it cleans beautifully for heritage pieces or outdoor restorations. We typically use short pulses to lift dirt without digging into the grain. Its natural oils help resist moisture, so it shines up fast after marine or garden use. But watch the high porosity—it soaks up residue if you overlap too much. Adjust by increasing passes lightly. Compared to oak, redwood flexes more under heat, so steady scanning prevents cracks. This keeps the wood's warm tone intact for furniture or art work.
Redwood Machine Settings
Power Range
100
W
1
100
120
Wavelength
1,064
nm
355
1,064
1.1e4
Spot Size
100
μm
0.1
100
500
Repetition Rate
50
kHz
1
50
200
Energy Density
1.2
J/cm²
0.1
1.2
20
Pulse Width
10
ns
0.1
10
1,000
Scan Speed
500
mm/s
10
500
5,000
Pass Count
2
passes
1
2
10
Overlap Ratio
50
%
10
50
90
Dwell Time
100
μs
0
100
200
Redwood Material Safety
Shows damage risk across parameter space. Green = safe, Red = damage danger.
Pulse
DANGER
Fluence:25.46 J/cm²
From optimal:71%
Pulse Duration (ns)
1000
750
500
250
0
1
21
41
61
80
100
120
Redwood Energy Coupling
Shows laser energy transfer efficiency. Green = high coupling (energy absorbed), Red = poor coupling (energy reflected).
Pulse
GOOD
Fluence:— J/cm²
From optimal:29%
Pulse Duration (ns)
1000
750
500
250
0
1
21
41
61
80
100
120
Redwood Thermal Stress Risk
Shows thermal stress and distortion risk. Green = low stress risk, Red = high stress/warping/cracking risk.
Pulse
HIGH RISK
Fluence:— J/cm²
From optimal:58%
Pulse Duration (ns)
1000
750
500
250
0
1
21
41
61
80
100
120
Redwood Cleaning Efficiency
Shows cleaning performance across parameter space. Green = optimal effectiveness, Red = ineffective.
Pulse
GOOD
Fluence:25.46 J/cm²
From optimal:33%
Pulse Duration (ns)
1000
750
500
250
0
1
21
41
61
80
100
120
Redwood Heat Buildup
See if your multi-pass cleaning will overheat and damage the material
Heat Safety
100%40%
Heat Control
81%25%
Cooling Efficiency
83%20%
Pass Optimization
66%15%
📈 Heat Profile
Safe (<150°C)
Damage (>250°C)
🔧 Laser Settings
Pulse Energy:2000.00 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 redwood
🌡️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
Redwood 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.
