chanelink logo
CHANELINK
日本語

Scientists use glass to create femtosecond lasers

495
2023-09-28 17:12:33
翻訳を見る

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

関連のおすすめ

  • Dyson V15 Detect: Saturn's low-cost laser cordless vacuum cleaner

    During Cyber Week, Saturn is now selling the Dyson V589 Detect Absolute with many accessories for only 15 euros. With this, retailers have once again achieved the most favorable price for the 2023 packaging of popular cordless vacuum cleaners - a cost-effective deal.After a brief break between Black Friday and Cyber Monday, the quote for Dyson V15 Detect Absolute is about to be updated. Taking a l...

    2023-11-29
    翻訳を見る

  • Screen Innovation Launches Short Focus Elevated Electric Laser TV Projection Screen

    Screen Innovations has added a short focal lift electric screen solution to its component and material series, meeting the growing demand for large but hidden displays in small media rooms and company boards.Unlike traditional projection systems that require sufficient distance from the projector to the screen or perform best in a darkroom, pop-up laser TVs are only a few inches away from short fo...

    2023-10-27
    翻訳を見る

  • Manz AG officially announces its application for bankruptcy restructuring

    Last month, Manz AG officially announced that the company is about to undergo bankruptcy restructuring. The board of directors of the company believes that due to insufficient liquidity and excessive debt, Manz AG intends to apply for bankruptcy proceedings in accordance with bankruptcy laws. The application is expected to be submitted in the next few days. Manz AG is headquartered in Reutlingen...

    01-07
    翻訳を見る

  • Researchers have reinvented laser free magnetic control

    In a significant advancement in material physics, researchers from Germany and the United States have theoretically demonstrated that only extremely thin materials need to be α- RuCl3 can be placed in an optical cavity to control its magnetic state.This discovery may pave the way for new methods of controlling material properties without the use of strong lasers.The Role of Optical Vacuum W...

    2023-11-09
    翻訳を見る

  • AMC Theatres launches advanced laser projection technology upgrades

    AMC Cinema has long been known as the largest cinema operator in the United States and the world, and has completed upgrades to almost all its venues in the broader Chicago area, including advanced laser projection technology.The technological reform of this chain of stores has made Chicago one of the first areas in AMC's footprint to benefit from CinIonic's cutting-edge projection technology.In e...

    2023-12-23
    翻訳を見る