高出力レーザーポインター事故

-

この事がこの間で発生した。事が過ぎ去ってから、少し怖くなった。
http://www.laserpenreview.com/laser-10341

Comments

Post a Comment

Popular posts from this blog

The Difference Between Fiber Laser and CO2 Laser

-
Image
The main difference between the fiber laser  and the CO2 laser is that the working materials of the two are different. The working material of the fiber laser is optical fiber, and the working material of the CO2 laser is CO2, which belongs to the gas laser. In addition, the power of the two is relatively large. The difference is that fiber lasers are currently used from a few hundred watts to thousands of watts, while CO2 lasers typically   have a power range of 80W to 600W. The photoelectric conversion efficiency of fiber lasers is higher than that of CO2 lasers. Fiber lasers are superior to CO2 lasers in terms of cutting quality and speed. Fiber lasers are lower than CO2 lasers in terms of use and maintenance costs. Higher than CO2 lasers ; in addition, both fiber lasers and CO2 lasers require a chiller to cool and cool them.
Read more

Femtosecond laser fabrication—realizing dynamics control of electrons

-
Image
Femtosecond lasers are capable of processing any solid material with high quality and high precision using their ultrafast and ultra-intense characteristics. With the continuous development of laser technology, ultrafast laser manufacturing could become one of the primary methods employed in high-end manufacturing in the future. Recently, researchers have realized a new method of electron dynamics control for ultrafast laser micro/nano fabrication. For the first time, the localized transient electron dynamics can be actively controlled to manipulate material properties, which greatly enhances the efficiency, quality, uniformity and precision of laser fabrication. This research was conducted by the group of Professor Lan Jiang from Beijing Institute of Technology, in cooperation with Professor Tian-Hong Cui from the University of Minnesota, and Professor Yongfeng Lu from the University of Nebraska–Lincoln. Their research results were recently reviewed in Light: Science and Appli...
Read more

Fiber-laser in-band pumping enables novel 2 µm high-power short-pulse laser

-
Image
Highly efficient high-power short-pulse lasers in the 2 µm wavelength range based on thulium (Tm3+)-doped materials have a variety of applications that include materials processing (such as polymer-to-metal joining), lidar, mid-infrared optical parametric oscillators (OPOs) that produce wavelengths up to 12 μm, and mid-IR supercontinuum generation. They also would enable direct coherent soft x-ray generation via high-order harmonic generation (HHG). For these applications, a light source with much higher conversion efficiency, average power, pulse energy, and shorter pulse duration is desirable. Now, Masaki Tokurakawa and colleagues at the Institute for Laser Science, University of Electro-Communications (UEC; Tokyo, Japan) have developed novel 2 µm high-power short-pulse lasers based on new technique of fiber-laser in-band pumping at 1611 nm and Kerr-lens mode locking with a new Tm-doped gain medium provided from the University of Hamburg by researcher Christian Kränkel.1, 2 ...
Read more