High-power quantum-dot superluminescent tapered diode under CW operation

Adam F. Forrest*, Michel Krakowski, Paolo Bardella, Maria Ana Cataluna

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)
47 Downloads (Pure)


A high-power quantum-dot superluminescent diode is demonstrated under continuous-wave operation, with an output power of 137.5 mW and a corresponding spectral bandwidth of 21 nm. This represents not only the highest output power, but also a record-high power spectral density of 6.5 mW/nm for a CW-operated superluminescent diode in the 1.1 - 1.3 μm spectral region, marking more than a 6-fold increase with respect to the state of the art. The two-section contact layout of the reported device introduces additional degrees of freedom, which enable a wide tunability of the bandwidth and power depending on the desired application. A maximum bandwidth of 79 nm was recorded, with an output power of 1.4 mW. The high-power continuous-wave operation of this device would be particularly relevant for continuous, high-speed, high-sensitivity spectroscopy, imaging and sensing applications, as well as in optical communications.

Original languageEnglish
Pages (from-to)10981-10990
Number of pages10
JournalOptics Express
Issue number8
Early online date4 Apr 2019
Publication statusPublished - 15 Apr 2019

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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