Hamamatsu Photonics develops an industrial pulsed laser system delivering the world’s highest output power of 250 joules

PublishTime：2021-09-16

●Hamamatsu Photonics develops an industrial pulsed laser system delivering the world’s highest output power of 250 joules!
●Hamamatsu Photonics successfully developed an industrial pulsed laser system that produces a pulse energy of 250 J (joules) which is the world’s highest energy among LD-pumped lasers. The development of this laser system stems from the “Research and Development of Next Generation Laser Processing Technology” project supported by the NEDO, which is a national research and development agency in Japan. This new laser system boosts the energy storage capability of the laser medium as well as beam quality to deliver more than double the energy amplification capability while still maintaining the same size as currently available industrial pulsed lasers.
Acquiring and integrating the processing-machining data from this laser system will allow a useful database to be built for optimizing laser processing conditions by using artificial intelligence (AI). This will not only streamline laser processing-machining tasks but also open up new frontiers in energy and medical and applications.
●At future manufacturing sites, production equipment will be linked through cloud computing to streamline automation and enable labor-saving by using AI and harnessing the IoT (Internet of Things) that connects everything via the internet. These types of high-tech innovations are making lasers an essential tool for future manufacturing because laser machining and processing conditions are easy to control digitally.
Lasers used for material processing and machining are broadly classified into two groups. One group is CW (continuous wave) lasers that continuously emit light at a constant intensity. The other group is pulsed lasers that repetitively emit pulsed light at very short time intervals. CW lasers are used for heat treatment tasks such as laser welding and cutting making them the mainstream tool for laser processing and machining. Pulsed lasers, on the other hand, have not yet been widely used in these applications except for laser peening). This is because high-power semiconductor lasers (laser diodes, or LD) and large-size laser mediums that are needed for developing high-power pulsed laser systems have not been available. This has hindered the task of setting up systems to find critical processing and machining conditions such as the optimum irradiation time and energy.
To overcome these challenges, Hamamatsu Photonics have been developing high-power pulsed laser systems as part of the “Development of Advanced Laser Processing with Intelligence Based on High-Brightness and High-Efficiency Next-Generation Laser Technologies (TACMI Project)”) supported by the New Energy and Industrial Technology Development Organization (NEDO), which is a national research and development agency in Japan. In 2019, we developedan industrial pulsed laser*3) that produces a pulse energy of 117 joules by using 4 LD modules*4 that we manufactured in-house and 2 laser amplifiers*5) each equipped with 6 ceramic laser mediums).
We continued efforts to further boost the output power and this time succeeded in creating an industrial pulsed laser system that delivers a pulse energy of 250 joules, which is the world’s highest energy among LD-pumped lasers). At the same time, using this new laser system, we also evaluated basic conditions essential for designing a 1 kJ (kilojoule) class laser, which will prove an important milestone in laser technology development, and confirmed that it is practical and achievable.
Hamamatsu Photonics plans to announce this achievement at the NEDO booth of the OPIE ’21). This is Japan’s largest optoelectronics exhibition and will be held at the Pacifico Yokohama from Wednesday June 30th through to Friday July 2nd 2021. We will also exhibit laser-machined samples.

Brand of Product：	HAMAMATSU
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Product Category：	industrial pulsed laser system More
Application：	More
Data Type：	Supplier and Product Introduction More
Safety & Environment Standards：	More
Operating Temperature：	Please see the document for details
Qualification Grade：	More
Qualification Approval：	More
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Language：	English Chinese Chinese and English Japanese
Date of Creation：	June 28, 2021
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Data Size：	370 KB

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