Terahertz quantum cascade lasers (QCLs) represent a transformative development in the field of terahertz photonics, providing coherent radiation within a traditionally challenging spectral region ...

Researchers have made a breakthrough in the control of terahertz quantum cascade lasers that could lead to the ability to transmit data at 100 gigabits per second. The transmission of data at that ...

The terahertz quantum cascade laser on its mounting. Credit: University of Leeds Lasers that switch on and off billions of times per second are the backbone of optical communications networks, but ...

Cambridge, Mass. – October 22, 2007 – In a major feat of nanotechnology engineering researchers from Harvard University have demonstrated a laser with a wide-range of potential applications in ...

By combining adiabatic optical coupling, silicon-based feedback and cavity engineering, and ultra-compact laser concepts, CEA ...

A new publication from Opto-Electronic Advances; DOI 10.29026/oea.2024.240077 , discusses agile cavity ringdown spectroscopy enabled by moderate optical feedback to a quantum cascade laser. Optical ...

The quest is on to make terahertz sources that are small, portable and capable of operating at room temperature. Such a breakthrough could lead to advances in everything from cancer screening to ...

Biomass can be converted into valuable gases. But in order to control this process, the amount of water vapor has to be measured. This is notoriously hard, because other components of the gas can ...

Resonantly tunable quantum cascade lasers (QCLs) are high-performance laser light sources for a wide range of spectroscopy applications in the mid-infrared (MIR) range. Their high brilliance enables ...

Attempts to decrease the threshold current and improve the performance of a quantum cascade laser (QCL) have led Kale Franz and colleagues to stumble upon a surprising result. Instead of emitting just ...