Germanium laser cleaning visualization showing process effects
Ikmanda Roswati
Ikmanda RoswatiPh.D.Indonesia
Ultrafast Laser Physics and Material Interactions
Published
Jan 6, 2026

Germanium Settings

Germanium Machine Settings

Optimal laser parameters and operating ranges for effective cleaning

Wavelength

1,064
nm
355
1,064
1.1e4

Spot Size

200
μm
0.1
200
500

Energy Density

0.8
J/cm²
0.1
0.8
20

Pulse Width

20
ns
0.1
20
1,000

Scan Speed

1,000
mm/s
10
1,000
5,000

Pass Count

2
passes
1
2
10

Overlap Ratio

60
%
10
60
90

Laser Power

60
W
1
60
120

Laser Power Alternative

50
W
10
50
100

Frequency

20
kHz
1
20
200

Germanium Material Safety

Shows damage risk across parameter space. Green = safe, Red = damage danger.
WARNING
Fluence:3.98 J/cm²
From optimal:54%
Pulse Duration (ns)
1000
750
500
250
0
0
33
67
100
133
167
200
Power (W)

Germanium Energy Coupling

Shows laser energy transfer efficiency. Green = high coupling (energy absorbed), Red = poor coupling (energy reflected).
MODERATE
Fluence:— J/cm²
From optimal:42%
Pulse Duration (ns)
1000
750
500
250
0
0
33
67
100
133
167
200
Power (W)

Germanium Thermal Stress Risk

Shows thermal stress and distortion risk. Green = low stress risk, Red = high stress/warping/cracking risk.
ELEVATED
Fluence:— J/cm²
From optimal:50%
Pulse Duration (ns)
1000
750
500
250
0
0
33
67
100
133
167
200
Power (W)

Germanium Cleaning Efficiency

Shows cleaning performance across parameter space. Green = optimal effectiveness, Red = ineffective.
GOOD
Fluence:3.98 J/cm²
From optimal:29%
Pulse Duration (ns)
1000
750
500
250
0
0
33
67
100
133
167
200
Power (W)

Germanium Heat Buildup

Excellent

Heat Safety

Heat Control

Cooling Efficiency

Pass Optimization

📈 Heat Profile

Safe (<150°C)
Damage (>250°C)
0°C100°C200°C300°C✓ Safe🚨 Damage20°CPass 1Pass 2

🔧 Laser Settings

Pulse Energy:2000.00 mJ
Total Sim Time:60.2s

🌡️ Live Temperature

20°C
✅ Safe
Pass 1 of 2
Time: 0.0s / 60.2s

▶️ Simulation Controls

Germanium Dataset

Download Germanium properties, specifications, and parameters in machine-readable formats
32
Variables
0
Laser Parameters
0
Material Methods
11
Properties
3
Standards
3
Formats
View all Semiconductor datasets

License: Creative Commons BY 4.0 • Free to use with attribution •Learn more

Parameter Relationships

Shows how changing one parameter physically affects others. Click any node to see its downstream impacts and role.
WavelengthSpotSizeEnergyDensityPulseWidthScanSpeedPassCountOverlapRatioLaserPowerLaserPowerAlternativeFrequency

Spot Size

Directly affects Scan Speed and Energy Density. Increase this to amplify downstream effects.

Energy Density

Smaller spots concentrate energy into a smaller area.

Scan Speed

A bigger spot lets you scan faster while keeping good coverage.

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