| Abstract: The present invention is directed to the integration of a quantum cascade
laser with a hollow waveguide on a chip to improve both the beam pattern
and manufacturability. By coupling the QCL output into a single-mode
rectangular waveguide the radiation mode structure can be known and the
propagation, manipulation, and broadcast of the QCL radiation can then be
entirely controlled by well-established rectangular waveguide techniques.
By controlling the impedance of the interface, enhanced functions, such
as creating amplifiers, efficient coupling to external cavities, and
increasing power output from metal-metal THz QCLs, are also enabled. |
| Filed: 8/25/2010 |
| Application Number: 12/868440 |
| This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention. |
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