An amplifier for terahertz waves
Nature Photonics
2009년11월23일
A powerful amplifier for boosting Terahertz waves ― radiation that lies between the microwave and infrared regions of the spectrum ― is reported this week online in Nature Photonics. This study could be the key to unlocking the potential of terahertz waves (THz) for applications in pharmaceuticals research, security screening for explosives or drugs, and biological imaging.
Terahertz waves are often very weak, which has so far limited their use. Nathan Jukam and colleagues have shown that a powerful amplifier for boosting THz waves can be made by integrating a special switch with a semiconductor laser. This can override the usual limit of the signal strength in the short time period before the laser settles into normal operation mode. The researchers show that the signal can be amplified by a factor of 400, which could greatly enhance the performance of THz equipment.
doi: 10.1038/nphoton.2009.213
리서치 하이라이트
-
7월29일
Engineering: Just add water to activate a disposable paper batteryScientific Reports
-
7월26일
Physics: Slab avalanche origin similar to that of earthquakesNature Physics
-
7월13일
Planetary science: Origins of one of the oldest martian meteorites identifiedNature Communications
-
7월12일
Astronomy: Casualty risk from uncontrolled rocket re-entries assessedNature Astronomy
-
7월12일
Physics: Beam vibrations used to measure ‘big G’Nature Physics
-
7월6일
Biotechnology: Mice cloned from freeze-dried somatic cellsNature Communications
