Terahertz quantum cascade lasers with copper metal-metal waveguides operating up to 178 K
Terahertz quantum cascade lasers with copper metal-metal waveguides operating up to 178 K
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DOI:
10.1364/oe.16.003242
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发表时间:
2008-03-03
期刊:
影响因子:
3.8
通讯作者:
Linfield, Edmund H.
中科院分区:
文献类型:
--
作者:
Belkin, Mikhail A.;Fan, Jonathan A.;Linfield, Edmund H.
We report terahertz quantum cascade lasers operating in pulsed mode at an emission frequency of 3 THz and up to a maximum temperature of 178 K. The improvement in the maximum operating temperature is achieved by using a three-quantum-well active region design with resonant-phonon depopulation and by utilizing copper, instead of gold, for the cladding material in the metal-metal waveguides. (c) 2008 Optical Society of America.