Wavefront engineering for mid-infrared and terahertz quantum cascade lasers [Invited]

@inproceedings{Yu2010WavefrontEF,
  title={Wavefront engineering for mid-infrared and terahertz quantum cascade lasers [Invited]},
  author={Nanfang Yu and Federico Capasso},
  year={2010}
}
We review our recent work on beam shaping of mid-infrared (mid-IR) and terahertz (THz) quantum cascade lasers (QCLs) using plasmonics. Essentials of QCLs are discussed; these include key developments, the operating principle based on quantum design, and beam quality problems associated with laser waveguide design. The bulk of the present paper is focused on the use of surface plasmons (SPs) to engineer the wavefront of QCLs. This is achieved by tailoring the SP dispersion using properly… CONTINUE READING

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