Terahertz quantum cascade lasers with >1 W output powers
2014; Institution of Engineering and Technology; Volume: 50; Issue: 4 Linguagem: Inglês
10.1049/el.2013.4035
ISSN1350-911X
AutoresLianhe Li, Li Chen, Jingxuan Zhu, Joshua R. Freeman, Paul Dean, A. Valavanis, A. G. Davies, E. H. Linfield,
Tópico(s)Atmospheric chemistry and aerosols
ResumoTerahertz (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.
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