Terahertz quantum cascade lasers with >1 W output powers
By Lianhe H. Li, Li Chen, Jingxuan Zhu, J. Freeman, P. Dean, A. Valavanis, A. Davies, E. Linfield. 2014
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Terahertz (THz) frequency quantum cascade lasers emitting peak powers of >1 W from a single facet in the pulsed mode are demonstrated. The active region is based on a bound-to-continuum transition with a one-well injector, and is embedded into a surface-plasmon waveguide. The lasers emit at a frequency of ∼3.4 THz and have a maximum operating temperature of 123 K. The maximum measured emitted powers are ∼1.01 W at 10 K and ∼420 mW at 77 K, with no correction made to allow for the optical collection efficiency of the apparatus.
Subfields: Atmospheric Science, Spectroscopy
View Paper: https://www.semanticscholar.org/paper/639ddfab40b4855704fdb7f950dc6297cb138ca0
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Citations in the corpus
- Terahertz Imaging and Sensing Applications With Silicon-Based Technologies (2019, background): “and their operation is limited to frequencies above 2 THz [21].”