To achieve that, Hayazawa turned to terahertz time-domain ... the signal to be easily distinguished from noise. Being new to the technique, Hayazawa wondered whether this external modulation was ...

"The novel aspect to our approach is that the second laser extracts information and allows us to do this without resorting to a weak return signal. "The use of a second laser provides a robust and ...

"We are designing a detection system for an unknown and at the same time most likely ... an extraterrestrial laser signal with 10,000 near-infrared pulses per second from an exoplanet orbiting ...