Terahertz optics articles from across Nature Portfolio

Using short pulses in the terahertz spectral range following optical injection, ultrafast excitation of trions to excitons and free carriers in monolayer MoSe₂ can be realized within picoseconds, advancing nanoscale optoelectronics devices.

A Brillouin laser-driven terahertz oscillator is developed. The phase noise level of the generated terahertz waves is less than –100 dBc Hz^–1, translating to timing noise below 10 as Hz^–1/2 at 10 kHz Fourier frequency, over a carrier frequency range from 300 GHz to 3 THz.

Prof. Manijeh Razeghi, a true star who radiates energy and light, calls on all women to realize their true value and potential.

A new design of electron gun that uses terahertz waves to accelerate electrons in a high field gradient brings a tabletop answer to the generation of ultrashort electron bunches.

Excitation of magnons — quanta of spin-waves — in an antiferromagnet can be used for high-speed data processing. The addition and subtraction of two such modes opens up possibilities for magnon-based information transfer in the terahertz spectral region.

Understanding the mechanism underlying light-induced superconductivity could help manifest it at higher temperatures. Experiments now show that the excitation of a specific phonon leads to a resonant enhancement of this effect in K₃C₆₀.