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technology and tochnews


The new law in technology and laser physics makes Tochnews eye surgery simpler



Revisiting a common type of laser, scientists have found a way to rapidly increase the amount of energy emitted in a very short period of time, with potential applications in surgery.

Scientists have developed a new type of laser that can deliver large amounts of energy in a very short time, with potential applications or sensitive materials engineering in eye and heart surgery.



It was conducted in the laboratory of the School of Physics at the University of Sydney. Antoine Runge. Credit: Louis Cooper / University of Sydney

Professor Martijon de Starke, director of the Sydney University Institute of Photonics and Optical Science, said: "This laser has a property that reduces its pulse duration by at least one trillion seconds, reducing its energy to the ceiling.

“This makes it an ideal candidate for processing material that requires small, powerful pulses. An application may involve corneal surgery, which relies on gently removing material from the eye. It requires strong, small light pulses to heat and damage the surface. "

This research was recently published in Nature Photonics.


Scientists have achieved this remarkable result by returning to the common laser technology common in telecommunications, metrology and spectroscopy. These lasers use the effect of so-called soliton waves, which are light waves that keep their shape longer.

Solitons were first discovered in the 19th century, not in the light, but in the water waves in England's industrial canals.


Dr Andrea Blanco-Redondo at the Sydney Nanoscience Hub, now at Bell Labs in the US. Sincerely: University of Sydney

Dr Andrea Blanco-Redondo, co-author of Silicon Photonics at Nokia Bell Labs in the US, said: "Soliton lasers are the simplest, cost-effective and powerful way to achieve these small bursts. However, so far, conventional soliton lasers have not been able to provide enough energy.

Doctor. "Our result makes Soliton Laser usable for biomedical applications," says Blanco-Redondo.

The research is based on previous work established by the University of Sydney Institute for Photography and Optical Science, which published the invention of the pure-quartile soliton in 2016.



Prof. Martijn de Starke (left) and Dr in the School of Physics at the University of Sydney. Antoine Runge. Credit: Louis Cooper / University of Sydney

New law in laser physics


In a typical soliton laser, light energy is inversely proportional to its pulse duration, represented by the equation E = 1 / t. If you reduce the light pulse time, you get double the power.

Using quartic solitons, light energy is inversely proportional to the third energy of the pulse duration, or E = 1 / t3. If your pulse is half the time, the energy distributed at that time is multiplied by eight factors.

“This is the proof of the new law in laser physics that is so important in our research,” says Dr. Runge. 

Establishing this proof of principle, the team produces more powerful soliton lasers.

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technology and tochnews technology and tochnews Reviewed by MVP on June 21, 2020 Rating: 5

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