5.9 GHz graphene based q-switched modelocked mid-infrared monolithic waveguide laser

Fiona Thorburn, Adam Lancaster, Sean McDaniel, Gary Cook, Ajoy Kumar Kar

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Abstract

A high repetition rate Q-switched modelocked ~2.1 µm monolithic waveguide laser is reported. Ultrafast laser inscription is used to fabricate 3D depressed cladding channel waveguides in holmium doped yttrium aluminium garnet. This results in a transversely single mode waveguide laser. With the use of a graphene based saturable output coupler, Q-switched modelocking was achieved with a pulse repetition frequency of 5.9 GHz and up to 170 mW of average output power. This first demonstration of multi-GHz repetition rate operation from a Ho3+:YAG laser provides a compact and convenient source for a number of applications.

Original languageEnglish
Pages (from-to)26166-26174
Number of pages9
JournalOptics Express
Volume25
Issue number21
DOIs
Publication statusPublished - 12 Oct 2017

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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