Abstract
Terahertz (THz) quantum cascade lasers (QCL) operating round 2.9 THz are modified with longitudinal computer-generated hologram (LCGH) structures <3 mm in total length to achieve purely electronic discrete tuning on six modes spanning over 160 GHz. The behavior and digital frequency selection offered by LCGH QCLs is shown to be reproducible.
© 2012 Optical Society of America
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