Supported by the National Key Basic Research and Development Program of China(No 2010CB735904);NSFC(No 61007054);Doctoral Program of High School Research Fund(No 20104408110002);the Improvement and Development Project of Shenzhen Key Lab(No CXB201005240014A);the Science and Technology Project of Shenzhen City(No JC201105170693A);the Key Program of Basic Research Project of Shenzhen(No JC201005250048A);the Applied Technology Developmental Project of Shenzhen University(No 201221);the Research Grants Council of Hong Kong,China(No GRF PolyU 526511).
We demonstrate an erbium-doped ring-cavity fiber laser Q-switched by a graphene oxide-based saturable absorber(GOSA).The GOSA was fabricated by vertically evaporating GO-polyvinylalcohol(GO/PVA)composite dispersion,an...