Silicon oxynitride optical resonators can maintain Q values above 100 million, even in ambient environments. Published D. Chen et al, ACS Photonics 4 (9) (2017). Link: http://pubs.acs.org/doi/abs/10.1021/acsphotonics.7b00752
By adding small amounts of Zr to the silica toroid resonator, the Raman lasing threshold is dramatically reduced. Published in: H. Choi et al, ACS Photonics 3 (12) 2016. Link: http://pubs.acs.org/doi/abs/10.1021/acsphotonics.6b00608
With only a single monolayer of small organic molecule, the threshold for comb generation is dramatically reduced. Published in: X. Shen et al, Science Advances 4 (1), eaao4507, (2018). Link: http://advances.sciencemag.org/content/4/1/eaao4507
By combining gold nanoparticles with ultra-high Q cavities, the threshold and span of cavity-enhanced frequency combs are improved. Published in: R. Castro-Beltran et al, ACS Photonics 4 (11) 2017. Link: http://pubs.acs.org/doi/10.1021/acsphotonics.7b00808
- We have several projects investigating light-matter interactions between the whispering gallery mode and different material coatings. For example, we are studying how nanomaterial coatings which exhibit non-linear optical properties can be used to manipulate the optical behavior of the device. We are also investigating using active materials, such as nonlinear optical polymers and small molecules, as coatings.
- We have projects which are devoted to developing new integrated optical devices, such as low threshold on-chip lasers and photonic circuitry (low-loss waveguides, splitters). Additional projects are also geared to developing new optical instruments for diagnostics.
- In addition to developing new devices, we also perform 2D and 3D FEM and FDTD simulations to better understand our experimental results and direct our experiments.