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Recently, Opton Laser International, a supplier specializing in photonics, is currently distributing manufacturer UltraFast Innovations (UFI)'s ultra-high contrast third-order autocorrelator Tundra++. The new generation Tundra aims to characterize the temporal intensity distribution and quality of laser pulses with particularly high sensitivity.This is to avoid the harmful effects caused by the hi...
Two dimensional transition metal chalcogenides have multi valley structures in their energy bands, giving them electron valley degrees of freedom, making them an ideal platform for studying multi body interactions. As the main mechanism of valley depolarization, the valley scattering process of free electrons or bound excitons is crucial for exploring excited state electron phonon interactions and...
The attosecond light source has the characteristics of ultra short pulse width, short wavelength, high coherence, and high-precision synchronous control, and has extremely high potential for application in the field of ultrafast imaging. Especially when the attosecond light source reaches the "water window" band, oxygen and hydrogen atoms have weak absorption of X-rays in this band, so water is re...
Typically, for lasers in optical communication systems, waveguide designs are used to achieve a single transverse mode. By adjusting the thickness of the surrounding area of the cladding layer and the etching depth of the ridge in the ridge waveguide device, a single mode device can be obtained. The importance of lasers is reflected in the following aspects:A chip without ridge waveguide design an...
A research team led by Lawrence Berkeley National Laboratory (Berkeley Lab), Columbia University, and Autonomous University of Madrid has successfully developed a novel optical computing material using photon avalanche nanoparticles. This breakthrough achievement was recently published in the journal Nature Photonics, paving the way for the manufacture of optical memory and transistors at the nano...