The penetration depth
The penetration depth of laser light in biological tissue depends on the wavelength. Red and infrared laser light has the highest penetration depth, green and blue light develops its effects only on the surface areas.
| 500 mW Laser outcome | Green | Red | Infrared |
| in 1mm depth | 0,5 mW | 50 mW | 250mW |
| in 6mm depth | 0,000000000000004 mW | 0,0005 mW | 0,8 mW |
Laser power of different wavelengths in different tissue depths
500 mW Laser:
In 1mm depth
In 6mm depth
