  We report on a passively mode-locked Tm, Ho:CLNGG laser operating at 2090 nm,
pumped by a multimode fiber-coupled 793 nm laser diode, representing the first
demonstration of an affordable diode-pumped sub-100-fs mode-locked laser in the
2.1-\mum wavelength range. Due to the disordered nature of the gain material
that exhibits a broad and smooth gain profile, pulses as short as 88 fs were
achieved with an average output power of 120 mW at a repetition rate of 70.3
MHz. The stable self-starting mode-locked operation was obtained using a
semiconductor saturable absorber mirror based on GaSb material system.
