Why Do Engineers Favor 1550nm Lasers For Applications Near Human Activity?

Laser safety mainly comes down to different factors such as the type of beam (the light), the intensity, the length of time, and the environment. One reason why 1550nm laser in the infrared range has drawn attention is the significantly different way it interacts with the eye.

1)     Varied light absorption features

Since 1550nm pulsed single frequency seed laser is more likely to be taken up by the front part of the eye, such as the cornea and lens, a lot fewer rays get to the retina, unlike most of the visible and near-infrared wavelengths, thus making potential exposure a lesser risk under comparable circumstances.

2)     Not so deep in retina

Visible light and near-infrared wavelengths can traverse the eye's optical components and land directly on the retina. On the other hand, the light of 1550nm microsecond pulsed fiber laser reaches the retina very weakly after absorbing much absorption first.

3)     Laser for close human contact

Fiber lasers of wavelength 1550nm from Techwin are preferred for many optical sensing and human proximity situations like LiDAR because of such optical characteristics. Their choice makes it possible to satisfy design targets as well as to ensure compatibility with laser safety regulations.

4)     Limits of pulses

A microsecond pulsed single frequency seed laser transfers the pulse energy not continually but at shorter time intervals. Although pulse duration is a factor affecting system performance, a safer laser can still be obtained as long as the system is designed properly, taking into consideration output parameters including power.

5)     Predictable performance and protection

The fact that a fiber laser is energy efficient and the way that 1550nm microsecond pulsed fiber laser behaves optically makes the development of very capable industrial and sensing systems that also pose much less threat to the eye when compared to lasers at shorter wavelengths possible. This can be achieved if the laser system is designed correctly, and its use is confined to safety-certified parameters.