期刊
APPLIED PHYSICS LETTERS
卷 96, 期 3, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3273056
关键词
optoelectronic devices; photonic crystals; quantum cascade lasers
资金
- EPSRC (U.K.)
- EC
- DGA
- C-Nano Ile-de-France
- Engineering and Physical Sciences Research Council [EP/E048811/1] Funding Source: researchfish
- EPSRC [EP/E048811/1] Funding Source: UKRI
The use of integrated photonic structures to tailor the behavior of light is extremely promising for optimizing performance and for introducing advanced functionalities into optoelectronic devices. We demonstrate a powerful method based on photonic-band engineering which allows the optimization of the resonator quality factors of devices operating on band-edge photonic-crystal states. We also show that carefully designed pi-shifts in two-dimensional photonic-resonators give enhanced beam properties. The application of these general techniques to terahertz quantum cascade lasers yields improved maximum operating temperatures, and angularly narrow, single-lobed surface emission of approximate to 12 degrees x8 degrees. The devices operate at approximate to 2.8/2.9 THz, with peak output powers of 5 mW at 78 K.
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