Compact integrated actively Q-switched waveguide laser

Christoph Wieschendorf*, Josiah Firth, Leonardo Silvestri, Simon Gross, François Ladouceur, Michael J. Withford, David J. Spence, Alex Fuerbach

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)


A miniaturized deformed helix ferroelectric liquid crystal transducer cell was used in combination with a femtosecond laser inscribed active waveguide to realize a compact actively Q-switched laser source. The liquid crystal cell was controlled by a low-voltage frequency generator and laser pulse durations below 40 ns were demonstrated at repetition rates ranging from 0.1 kHz to 20 kHz and a maximum slope efficiency of up to 22%. This novel, integrated and low-cost laser source is a promising tool for a broad range of applications such as trace gas sensing, LIDAR, and nonlinear optics. To the best of our knowledge, this is the first demonstration of an actively Q-switched glass waveguide laser that has a user-variable repetition rate and can be fully integrated.

Original languageEnglish
Pages (from-to)1692-1701
Number of pages10
JournalOptics Express
Issue number3
Publication statusPublished - 6 Feb 2017


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