High-power quantum-dot tapered tunable external-cavity lasers based on chirped and unchirped structures

Stephanie Haggett, Michel Krakowski, Ivo Montrosset, Maria Ana Cataluna (Lead / Corresponding author)

    Research output: Contribution to journalArticle

    8 Citations (Scopus)

    Abstract

    A high-power tunable external cavity laser configuration with a tapered quantum-dot semiconductor optical amplifier at its core is presented, enabling a record output power for a broadly tunable semiconductor laser source in the 1.2-1.3 µm spectral region. Two distinct optical amplifiers are investigated, using either chirped or unchirped quantum-dot structures, and their merits are compared, considering the combination of tunability and high output power generation. At 1230 nm, the chirped quantum-dot laser achieved a maximum power of 0.62 W and demonstrated nearly 100-nm tunability. The unchirped laser enabled a tunability range of 32 nm and at 1254 nm generated a maximum power of 0.97 W, representing a 22-fold increase in output power compared with similar narrow-ridge external-cavity lasers at the same current density.
    Original languageEnglish
    Pages (from-to)22854-22864
    Number of pages11
    JournalOptics Express
    Volume22
    Issue number19
    DOIs
    Publication statusPublished - 22 Sep 2014

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  • Student Theses

    Development of versatile wavelength tunable external cavity quantum dot lasers

    Author: White, S., 2016

    Supervisor: Cataluna, M. (Supervisor) & Lamond, A. (Supervisor)

    Student thesis: Doctoral ThesisDoctor of Philosophy

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