Comparison of Advantages and Disadvantages of Different Laser Wavelengths

A comparative analysis of common laser wavelengths (905nm, 1064nm, 1535nm) based on key characteristics for various applications (e.g., Laser Radar, medical, communication, military):

1. 905nm Laser

Advantages:

Low Cost: Mature semiconductor laser technology with a well-established supply chain, suitable for large-scale commercial use (e.g., consumer-grade Laser Radar).

Good Penetration: Ideal for short to medium-range detection.

Disadvantages:

Poor Eye Safety: Close to the visible light spectrum (human eye range: 400-700nm), posing a risk of retinal damage. Power must be limited (Class 1 safety standard).

Atmospheric Attenuation: Strong scattering in fog, rain, and other adverse weather conditions, reducing long-distance performance.

Typical Applications: Automotive  Laser Radar, gun aiming, short-range laser rangefinders.

ERDI TECH 905nm Laser Rangefinder Model:

 LRF200A/LRF1200A/LRF1500A/LRF2000A/LRF4000A(1000m-4000m)

2. 1535nm Laser

Advantages:

Eye Safety: Belongs to the "retina-safe" band (primarily absorbed by the cornea, minimizing retinal damage), allowing higher power output (Class 1M standard).

Atmospheric Penetration: Better performance in fog and smoke compared to 905nm and 1064nm.

Disadvantages:

High Cost: Requires Indium Gallium Arsenic (In/Ga/Ar) detectors or Erbium:YAG lasers, with a less mature supply chain.

Lower Efficiency: Typically has lower photoelectric conversion efficiency than 905nm.

Typical Applications: Military Laser Radar, security surveillance, meteorological detection.

ERDI TECH 1535nm Eye Safe Erbium Glass DPSS Laser: 

ER20/ER40/ER100/ER200/ER300/ER500/ER800/ER1000/ER2000/ER8000/ER10000 (Pulse energy: 20μJ-100 mJ.

ERDI TECH 1535nm Eye-safety Laser Rangefinder Models/Laser Distance Ranging Sensors:

LRF0105C/LRF0308C/LRF0405C/LRF0610C/LRF0815C/LRF1220C/LRF1525C/LRF1830C/LRF2535C (Ranging distance: 2000m-25000m)

3. 1064nm Laser

Advantages:

High Power Output: Solid-state lasers can achieve high-energy pulses, suitable for industrial processing (cutting, welding) and military applications (laser weapons).

Atmospheric Penetration: Slightly better than 905nm, making it suitable for long-range detection (e.g., laser rangefinders/target designators).

Disadvantages:

Eye Risk: Still falls within the near-infrared spectrum, requiring careful power control (Class 1M standard).

Detector Cost: Expensive detectors.

Typical Applications: Industrial processing, military, laser rangefinder, space communication.

ERDI TECH 1064nm Laser Rangefinder & Target Designator：

LDR25K1/LDR40K1/LDR60K1/LDR80K1/LDR100K1 (Single Pulse Energy: 25mJ-100mJ)

Comprehensive Comparison Table