Elahi, P., Kalaycıoğlu, H., Akcaalan, Ö., Şenel, Ç., İlday, F.Ö., "Burst-mode Thulium All-fiber Laser Delivering Femtosecond Pulses at a 1 GHz Intra-burst Repetition Rate", Optics Letters, 42, 19, 3808-3811, 2017.