Hoogland, H., Thai, A., Sánchez, D., Cousin, S. L., Hemmer, M., Engelbrecht, M., et al. (2013). All-PM coherent 2.05 µm Thulium/Holmium fiber frequency comb source at 100 MHz with up to 0.5 W average power and pulse duration down to 135 fs. Optics Express, 21(25), 31390-31394. doi:10.1364/OE.21.031390.