Spectral control of asymmetric-waveguide large signal modulated diode lasers for non-linear applications

Eugene A. Avrutin*, Nuran Dogru, Boris Ryvkin, Juha T. Kostamovaara

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


The ways of optimising the spectral linewidth of gain-switched asymmetric waveguide lasers with a large effective spot size for applications in non-linear optics are discussed. Theoretical analysis and comparison of different schemes of spectral narrowing for non-linear applications is presented, and the ways of maximising the performance improvement offered by the large effective spot size are compared. It is shown that, while customised single-frequency lasers are the most efficient in generating the non-linear signal, Fabry-Perot lasers operated in self-seeded gain-switched or external cavity mode locked regime are also capable of combining the advantages of the large effective spot size with a spectral linewidth within the tolerances provided by the spectral acceptance of typical non-linear elements.

Original languageEnglish
Pages (from-to)57-65
Number of pages9
JournalIet optoelectronics
Issue number2
Early online date29 Feb 2016
Publication statusPublished - 1 Apr 2016

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