posted on 2012-02-13, 00:00authored byJ. Gulden, O. M. Yefanov, A. P. Mancuso, R. Dronyak, A. Singer, V. Bernátová, A. Burkhardt, O. Polozhentsev, A. Soldatov, M. Sprung, I. A. Vartanyants
Originally published in Optics Express on 13 February 2012 (oe-20-4-4039)