Fig. 3: Nonlinear measurement of AuTe2Se4/3 saturable absorber (SA).
From: Ultrafast photonics of two dimensional AuTe2Se4/3 in fiber lasers
a Schematic diagram of saturable absorption measurement. VOA: variable optical attenuators; OC: optical coupler. b Nonlinear transmission of the AuTe2Se4/3 saturable absorber (SA). The error of the power is ± 5% due to the uncertainty of the power monitors.
