chanelink logo
CHANELINK
Deutsch

Scientists use glass to create femtosecond lasers

371
2023-09-28 17:12:33
Übersetzung anzeigen

Image source: Federal Institute of Technology in Lausanne, Switzerland

 

Science and Technology Daily, Beijing, September 27th (Reporter Zhang Jiaxin) Commercial femtosecond lasers are manufactured by placing optical components and their mounting bases on a substrate, which requires strict alignment of optical components. So, is it possible to manufacture femtosecond lasers entirely from glass? According to the latest issue of Optics magazine, scientists at the Federal Institute of Technology in Lausanne, Switzerland have successfully achieved this, with lasers no larger than credit cards and easier to align.

Researchers stated that due to the lower thermal expansion of glass compared to traditional substrates, it is a stable material. Therefore, they chose glass as the substrate and used commercial femtosecond lasers to etch special grooves on the glass to accurately place the basic components of the laser. Even in precision manufacturing at the micron level, the grooves and components themselves are not precise enough to achieve laser quality alignment. In other words, the reflector is not fully aligned, so at this stage, their glass device cannot be used as a laser.

So, researchers further designed etching to position a mirror in a groove with micro mechanical bending, which can locally twist the mirror when irradiated by femtosecond laser. By aligning the mirror in this way, they ultimately created a stable, small-scale femtosecond laser.

Despite its small size, the peak power of the laser is about 1 kilowatt, and the time to emit pulses is less than 200 femtoseconds, which is so short that light cannot pass through human hair.

This method of permanently aligning free space optical components through laser material interaction can be extended to various optical circuits, with extreme alignment resolutions as low as sub nanometer level.

 

Reprinted from：LDWORLD

Ähnliche Empfehlungen

  • Which automotive parts can use laser soldering technology

    Laser soldering is widely used in the manufacturing of automotive parts. Here are some common automotive parts that can be welded using laser soldering:Automotive electronic control systemEngine Control Unit (ECU): The engine control unit is the "brain" of the car engine, which receives signals from various sensors and controls the operation of the engine based on these signals. Laser soldering ca...

    02-10
    Übersetzung anzeigen

  • Researchers develop innovative quantum dot lasers for advanced frequency combs

    Researchers at the University of California, Santa Barbara have made significant breakthroughs in laser technology, introducing a groundbreaking quantum dot mode-locked laser that allows for independent generation of amplitude and frequency modulation combs from a single device. This cutting-edge dual mode laser paves the way for the creation of small-sized and energy-efficient frequency combs for...

    2023-11-17
    Übersetzung anzeigen

  • Han's Laser's net profit in the third quarter decreased by 45.37% year-on-year

    Recently, Han's Laser released a third quarter report, stating that the company achieved a revenue of 3.301 billion yuan in the third quarter, a year-on-year decrease of 8.96% (after adjustment); The net profit attributable to shareholders of the listed company was 209 million yuan, a year-on-year decrease of 45.37% (after adjustment).During the reporting period, the company's operating profit, to...

    2023-10-25
    Übersetzung anzeigen

  • Targeting military laser technology! Two major enterprises plan to establish a joint venture company

    Latest news: Rheinmetall and European Missile Group Germany plan to establish a joint venture to develop shipborne laser weapons.The cooperation between the two companies in the field of military laser technology has been ongoing for several years. In 2022 and 2023, under the framework of the High Energy Marine Laser Demonstration Working Group (ARGE), the jointly developed laser was successfully ...

    01-15
    Übersetzung anzeigen

  • Top management changes at Laser Photonics Corp., a US laser equipment manufacturer

    Recently, Laser Photonics Corp. (LPC), a Nasdaq listed equipment developer, announced that it has appointed John T. Armstrong as its new Executive Vice President. Before assuming his position at LPC, Armstrong served as Vice President of Astronics Test Systems, a subsidiary of Astronics Corporation, a global leader in advanced technology and products in critical mission areas such as aerospace a...

    2024-11-20
    Übersetzung anzeigen