Abstract
We demonstrate an ultra-compact and low-threshold thulium microcavity laser that is monolithically integrated on a silicon chip. The integrated microlaser consists of an active thulium-doped aluminum oxide microcavity beside a passive silicon nitride bus waveguide, which enables on-chip pump-input and laser-output coupling. We observe lasing in the wavelength range of 1.8–1.9 μm under 1.6 μm resonant pumping and at varying waveguide-microcavity gap sizes. The microlaser exhibits a threshold as low as 773 μW (226 μW) and a slope efficiency as high as 24% (48%) with respect to the pump power coupled into the silicon nitride bus waveguide (microcavity). Its small footprint, minimal energy consumption, high efficiency, and silicon compatibility demonstrate that on-chip thulium lasers are promising light sources for silicon microphotonic systems.
© 2016 Optical Society of America
Full Article | PDF ArticleMore Like This
Khadijeh Miarabbas Kiani, Henry C. Frankis, Richard Mateman, Arne Leinse, Andrew P. Knights, and Jonathan D. B. Bradley
Opt. Mater. Express 11(11) 3656-3665 (2021)
Nanxi Li, Purnawirman Purnawirman, Zhan Su, E. Salih Magden, Patrick T. Callahan, Katia Shtyrkova, Ming Xin, Alfonso Ruocco, Christopher Baiocco, Erich P. Ippen, Franz X. Kärtner, Jonathan D. B. Bradley, Diedrik Vermeulen, and Michael R. Watts
Opt. Lett. 42(6) 1181-1184 (2017)
Khadijeh Miarabbas Kiani, Henry C. Frankis, Hamidu M. Mbonde, Richard Mateman, Arne Leinse, Andrew P. Knights, and Jonathan D. B. Bradley
Opt. Lett. 44(23) 5788-5791 (2019)