Journal
APPLIED PHYSICS LETTERS
Volume 93, Issue 18, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3013819
Keywords
antenna radiation patterns; horn antennas; laser cavity resonators; laser modes; quantum cascade lasers; submillimetre wave antennas; submillimetre wave lasers; waveguide lasers
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Funding
- EC
- Delegation Generale pour l'Armement (DGA)
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A 2.8 THz metal-metal quantum cascade laser operating with a microtransverse-electromagnetic-horn antenna has been demonstrated. By comparing the far-field radiation pattern to a standard ridge cavity with a cleaved facet, a striking improvement of the directionality is observed. The effectiveness of the horn antenna is critically dependent on the control of the lateral modes in the laser cavity.
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