TY  - JOUR
AU  - Williams, Benjamin S.
PY  - 2007
DA  - 2007//
TI  - Terahertz quantum-cascade lasers
JO  - Nature Photonics
SP  - 517
EP  - 525
VL  - 1
KW  - QCL review
AB  - Six years after their birth, terahertz quantum-cascade lasers can now deliver milliwatts or more of continuous-wave coherent radiation throughout the terahertz range — the spectral regime between millimetre and infrared wavelengths, which has long resisted development. This paper reviews the state-of-the-art and future prospects for these lasers, including efforts to increase their operating temperatures, deliver higher output powers and emit longer wavelengths.
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ID  - Williams2007
ER  -