JILA researchers have developed a laser-based source of terahertz radiation that is unusually efficient and less prone to damage than similar systems. The technology might be useful in applications such as detecting trace gases or imaging weapons in security screening.
JILA is a joint institute of the National Institute of Standards and Technology (NIST) and the University of Colorado at Boulder.
Terahertz radiation -- which falls between the radio and optical bands of the electromagnetic spectrum -- penetrates materials such as clothing and plastic but can be used to detect many substances that have unique absorption characteristics at these wavelengths. Terahertz systems are challenging to build because they require a blend of electronic and optical methods.
Terahertz radiation -- which falls between the radio and optical bands of the electromagnetic spectrum -- penetrates materials such as clothing and plastic but can be used to detect many substances that have unique absorption characteristics at these wavelengths. Terahertz systems are challenging to build because they require a blend of electronic and optical methods.
