For as long as small, hidden radio transmitters have existed, people have wanted a technology to detect them. One of the more effective ways to find hidden electronics is the nonlinear junction ...

The need for improvements in terahertz-spectrum sources. How lasers and graphene layers are being used to create harmonics into the THz band. The multiple experiments that were run and the overview of ...

Figure | Schematic of the experimental configuration to generate and detect THz third harmonic generation. A multicycle driving field at the frequency w is transmitted through a lowpass filter. Inside ...

Scientists have found a way to see ultrafast molecular interactions inside liquids using an extreme laser technique once thought impossible for fluids. When they mixed nearly identical chemicals, one ...