36V PWM high power Water Cooling 450nm 120W Blue laser Module for Laser Weeder
BU-LASER launches this industrial heavy-duty 450nm combined 120W blue laser module, purpose-built for intelligent agricultural laser weeding robots, autonomous farm weeding equipment, greenhouse precision weed removal and row-crop targeted weed control systems. It integrates multi-emitter beam combining diodes, built-in 36V high-current PWM constant-current driver, and heavy-duty circulating water cooling system, delivering stable 120W real CW optical power. The 450nm blue spectrum boasts ultra-high absorption efficiency against plant chlorophyll, enabling fast, chemical-free, precise weed eradication without damaging cash crops, perfectly matching 24/7 unmanned farm field operation demands.
Core Advantages Optimized for Laser Weeding Equipment
1. 450nm Wavelength: Superior Chlorophyll Absorption for Efficient Weed Killing
450nm ±5nm blue wavelength achieves 2–3x higher light absorption by weed chlorophyll compared to infrared lasers, requiring only half the energy to destroy weed cell tissue and terminate growth.
Instant photothermal effect vaporizes leaf moisture and ruptures vascular tissue of weeds, achieving complete eradication with a single short irradiation;
Narrow spectral linewidth ≤5nm FWHM eliminates stray light, ensuring energy concentrates only on targeted weeds, avoiding accidental heat damage to adjacent crops;
Zero herbicide residues, eco-friendly soil protection, fully compliant with organic agriculture and green farming standards.
2. Combined 120W Ultra-High Power for High-Speed Field Weeding
Multi-beam space combining technology stacks multiple laser emitters into one uniform collimated beam, delivering steady 120W CW power with 0–120W stepless PWM power adjustment.
Supports fast-moving robotic weeder platforms at 0.3–1.2 m/s travel speed; eliminates incomplete weed scorching common with 30–80W low-power modules;
High-energy-density focusing spot rapidly eliminates small seedling weeds, broadleaf weeds and grass weeds in a single shot, drastically boosting farm weeding throughput.
3. Integrated 36V PWM Driver, Perfect Compatibility with Agricultural Robot Control Systems
Standard DC 36V wide input voltage (34–38V tolerance), matching the battery power architecture of most agricultural unmanned vehicles, field robots and autonomous weeding machinery.
Dynamic power adjustment function: automatically lower power for tiny seedling weeds, boost full power for mature large weeds, cutting total energy consumption and extending module service life;
Fully encapsulated driver circuit inside housing, no external drive board needed, simplifying wiring layout inside compact robot chassis.
4. Heavy-Duty Water Cooling System Adapted to Harsh Outdoor Farm Environments
Custo high-flow circulating water cooling system, engineered for extreme outdoor temperature swings (hot summer fields up to 45℃):
Thermal resistance ≤0.28°C/W, stably stabilizes laser diode junction temperature at 50±1°C under continuous 120W full-power operation, preventing power decay caused by field heat accumulation;
Fanless internal design avoids dust, farm soil particles and crop debris suction into optical components, reducing maintenance frequency in dusty field conditions; MTBF ≥10,000 hours for all-day unmanned agricultural production.
