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Views: 0 Author: Site Editor Publish Time: 2025-12-13 Origin: Site
Strong absorption by plant tissues (especially water)
Controllable energy and fast response
Compact size, low power consumption, and compatibility with mobile platforms
Safety, reliability, and simple maintenance
Targeted Chlorophyll Absorption: The 450nm blue wavelength aligns perfectly with chlorophyll’s strongest absorption peak, efficiently disrupting the photosynthetic system.
Mechanism of Action: Light energy is directly absorbed by chlorophyll, converted into heat to destroy cell structures, and precisely "kill" weeds.
Energy Density: A 6.1W blue laser achieves 100% weed control rate at an energy density of 1.86J/mm².
Moisture Thermal Effect: The far-infrared wavelength is highly absorbed by water (accounting for over 80% of plant composition), generating intense heat to rupture cells.
Key Feature: A "instant-kill" strong thermal effect, with nearly 100% of energy absorbed by water.
Penetration: Primarily acts on the plant surface, resulting in shallow thermal damage.
Compact and lightweight design (single module < 1kg), without compromising drone endurance.
Low power consumption (total power consumption of a 100W system is approximately 160W), extending flight time.
Case Study: The RYS Laser eVTOL-1 drone, equipped with a 2000W blue laser system, eliminates 120,000 weeds per hour.
Bulky size and excessive weight (single unit > 15kg).
High power consumption drastically shortens battery life.
Requires additional cooling systems, increasing complexity and weight.
Multi-module parallel configuration achieves a coverage width of 2-3 meters.
Low energy consumption reduces operational costs.
Ideal for medium-to-small farms and precision agriculture.
High power output processes 8,000㎡ per hour, eliminating 600,000 weeds.
Ideal for large-scale farms and extensive agriculture.
Case Study: Carbon Robotics’ LaserWeeder G2, equipped with 24 150W CO₂ lasers, removes 600,000 weeds per hour.
Conclusion: CO₂ lasers hold an advantage for large-scale farms, while blue lasers are more cost-effective for medium-to-small farms.
Ergonomic design for easy one-handed operation (≤2kg).
Low-voltage operation ensures high safety.
Suitable for small-scale applications such as orchards, greenhouses, and home gardening.
Bulky and heavy, making handheld use impossible.
High-voltage system poses significant safety risks.
Precisely identifies and targets weeds without damaging delicate seedlings.
Small heat-affected zone protects crop root systems.
Low energy consumption supports long-term continuous operation.
Excessively strong thermal effect may cause indirect damage to seedlings.
High energy consumption and poor heat dissipation in greenhouse environments.
Conclusion: The blue laser is more precise and safe for precision weeding in greenhouses.
Comprehensive evaluation:
The 450nm blue semiconductor laser will become the mainstream green blade of future farmlands, with irreplaceable advantages in the following aspects:
40%+ lower energy consumption, in line with global carbon neutrality trends.
Maintenance-free design reduces waste.
Miniaturized production lowers material consumption.
CO₂ lasers will maintain their advantage in ground-based equipment for large-scale farms in the short term (5-8 years), especially in scenarios requiring high-power and rapid weeding. However, in the long run, as blue laser power increases and costs decrease, CO₂ lasers will gradually lose market share.
Dongguan Blueuniverse Laser Co., Ltd manufactured blue diode lasers from 1W to 500W, we also can offer professional OEM&ODM service for weeding control lasers.
BU-LASER provides Diode laser modules with multiple specification choices(output power, beam divergence, beam size, working distance, and dimension) better meet customers’ needs of accurate laser positioning/locating/orientating. To know more, please contact us at song@bu-laser.com.
