Abstract
Terahertz (THz) quantum cascade laser (QCL) is a semiconductor based heterostructure laser based on intersubband transitions. Although THz QCLs have been developed with relatively high performance, there is always a need to further improve the device performance, for example, achieving high beam collimated, polarization arbitrarily controlled, and high speed modulation. It is also desired that those performance could be achieved through an integrated approach for miniaturalization, easy alignment and reducing cost.
© 2016 Optical Society of America
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