Composite cavity semiconductor fiber ring laser.
A passive subring cavity that served as mode selector was inserted into a semiconductor fiber ring laser to generate a stable lasing spectrum. A narrow linewidth of less than 10 kHz with unidirectional operation in the composite cavity ring laser was achieved. Tuning over a range of 20 nm was obtained by application of 0-30 V dc to a piezoelectric transducer in the subring cavity.
Z
Z
Hu
L
L
Zheng
Y
Y
Zhang
Q
Q
Tang