Laser Beams and lenses Two Unruly Teenagers Pt1

Описание к видео Laser Beams and lenses Two Unruly Teenagers Pt1

We use laser beams and lenses on all our laser machines and we take them at face value, trusting reputable manufacturers' specification sheets. The problem is that laser machine builders are not cash gobbling research institutes. they need to be efficient profit making organizations. Hence they put their trust in top quality components that seem to work sufficiently well and require no close scutiny.
As a user of laser technology, I have noticed many detailed inconsistencies with these key elements of our machines that DO require much closer scutiny. I have known for a long time that lens design is based on transmitting normal light images and that passing a laser beam through a lens is a completely different application that exposes the inherent weakness of spherical lens geometry. Yes, superficially it seems to sort of work, however, forensic examination of that interaction has led me to gain a complete understanding of how the laser cutting mechanism works and In doing so it has raised serious questions about the laser beam itself .
In this 2 part series, I first examine what the laser tube manufactuers are selling us and the problems that we all ignore. In part 2, I look closely at how a lens works and what happens when it attempts to focus a laser beam. We all think we know the answer.... but even I was taken aback with the reality of that interaction.

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