Scientists presented the latest femtosecond laser

There are many laser light sources available these days. Each of them has its own characteristics and different

Areas of use:stargazing, disease treatment and surface micro-machining. “Our goal is to develop new ones,” explains Yuri Stepanenko, head of the ultrafast laser technologies group at the Institute of Physical Chemistry of the Polish Academy of Sciences. “We are dealing with sources that produce ultrashort pulses of light. Actually very, very short - femtosecond pulses. This is the scale on which, for example, intracellular chemical reactions occur. To see them, we need to capture the process in a very short time. And thanks to the new laser, we can do this.”

Ultrashort (extremely short) laserspulses, or femtosecond lasers, are optical quantum generators capable of generating pulses of laser radiation that contain a sufficiently small number of optical field oscillations.

In addition, the new laser allows very preciseremove various particles from surfaces without destroying the coating. You can, for example, clean the Mona Lisa using a new method without damaging the layers of paint. Only dust and dirt with a layer of about 10 nanometers will be removed. Although, notes Dr. Bernard Pichal, co-author of an article about a new development in Journal of Lightwave Technology, “the laser is even too precise for this kind of work.” To clear the picture, only nanosecond pulses are needed. These are impulses that last a thousand times longer.

Scientists are confident that soon their invention will beimplemented in more industrial applications. Perhaps humanity is waiting not only for thinner and lighter laptops, but also for a better understanding of what is happening inside the human body.

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