Si/SiGe bound-to-continuum quantum cascade terahertz emitters - art. no. 69961C

摘要: A review will he presented of recent work on Si/SiGe heavy-hole quantum cascade emitters showing progress towards a laser using the bound-to-cotinumum design for active region. The sample was grown by low energy plasma enhanced chemical vapour deposition in significantly less time than comparable structures and designs III-V or technology molecular beam epitaxy more standard techniques. Clear intersuband electroluminescence is demonstrated at 4.2 K between 6.7 10.1 THZ. This inside restrahlung band where materials cannot lase, unlike Group IIV materials. wageguide losses also be some ideas how to an region with gain higher waveguide discussed.