发明名称 |
Terahertz lasers and amplifiers based on resonant optical phonon scattering to achieve population inversion |
摘要 |
The present invention provides quantum cascade lasers and amplifier that operate in a frequency range of about 1 Terahertz to about 10 Terahertz. In one aspect, a quantum cascade laser of the invention includes a semiconductor heterostructure that provides a plurality of lasing modules connected in series. Each lasing module includes a plurality of quantum well structure that collectively generate at least an upper lasing state, a lower lasing state, and a relaxation state such that the upper and the lower lasing states are separated by an energy corresponding to an optical frequency in a range of about 1 to about 10 Terahertz. The lower lasing state is selectively depopulated via resonant LO-phonon scattering of electrons into the relaxation state.
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申请公布号 |
US2005058168(A1) |
申请公布日期 |
2005.03.17 |
申请号 |
US20030661831 |
申请日期 |
2003.09.12 |
申请人 |
HU QING;WILLIAMS BENJAMIN S. |
发明人 |
HU QING;WILLIAMS BENJAMIN S. |
分类号 |
H01S5/00;H01S5/22;H01S5/30;(IPC1-7):H01S5/00 |
主分类号 |
H01S5/00 |
代理机构 |
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代理人 |
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地址 |
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