DLR Stuttgart group has just published a paper on their innovative 100 kHz SLR system. Otsubo has contributed as a coauthor.
Authors: D. Hampf, E. Schafer, F. Sproll, T. Otsubo, P. Wagner, W. Riede
Title: Satellite laser ranging at 100 kHz pulse repetition rate
Journal: CEAS Space Journal, doi 10.1007/s12567-019-00247-x