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Ultrafast lasers for materials processing

A new type of ultrafast laser technology is being developed to create high-precision microstructures, such as those needed for smartphone displays. The project aims to make the technology cheaper and more efficient, with potential applications in glass processing, polymer ablating, and future laser surgery.

Rare-earth-based lasing in multiple bands simultaneously

Researchers successfully demonstrate room-temperature multiband microlasers spanning a large wavelength range using rare earth elements. The lasing process combines downshifting and upconversion, expanding the emission wavelength range. The resulting microlasers exhibit good intensity stability and are suitable for practical applications.

Three-channel Kondo effect discovered in cubic holmium compound

Researchers have discovered a three-channel Kondo effect in a cubic holmium compound using numerical methods, predicting an exotic quantum ground state and potential applications. The study found a residual entropy value at ultra-low temperatures, matching the predicted value by the three-channel Kondo effect.

SourceTokyo Metropolitan University·JournalJournal of the Physical Society of Japan·TypeComputational simulation/modeling·DateOct 30, 2021