Monolithic waveguide laser mode-locked by embedded Ag nanoparticles operating at 1 μm
Li Rang,
Pang Chi,
Li Ziqi,
Dong Ningning,
Wang Jun,
Ren Feng,
Akhmadaliev Shavkat,
Zhou Shengqiang,
Chen Feng
Affiliations
Li Rang
School of Physics, State Key Laboratory of Crystal Materials, Shandong University, 27 Shan Da Nan Lu, Jinan 250100, China
Pang Chi
School of Physics, State Key Laboratory of Crystal Materials, Shandong University, 27 Shan Da Nan Lu, Jinan 250100, China
Li Ziqi
School of Physics, State Key Laboratory of Crystal Materials, Shandong University, 27 Shan Da Nan Lu, Jinan 250100, China
Dong Ningning
Key Laboratory of Micro-Nano Optoelectronic Materials and Devices, Key Laboratory of Materials for High-Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
Wang Jun
Key Laboratory of Micro-Nano Optoelectronic Materials and Devices, Key Laboratory of Materials for High-Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
Ren Feng
Department of Physics, Center for Ion Beam Application and Center for Electron Microscopy, Wuhan University, Wuhan 430072, China
Akhmadaliev Shavkat
Helmholtz-Zentrum Dresden-Rossendorf, Institute of Ion Beam Physics and Materials Research, Bautzner Landstr. 400, Dresden 01328, Germany
Zhou Shengqiang
Helmholtz-Zentrum Dresden-Rossendorf, Institute of Ion Beam Physics and Materials Research, Bautzner Landstr. 400, Dresden 01328, Germany
Chen Feng
School of Physics, State Key Laboratory of Crystal Materials, Shandong University, 27 Shan Da Nan Lu, Jinan 250100, China
Monolithic waveguide laser devices are required to achieve on-chip lasing. In this work, a new design of a monolithic device with embedded Ag nanoparticles (NPs) plus the Nd:YAG ridge waveguide has been proposed and implemented. By using Ag+ ion implantation, the embedded Ag NPs are synthesized on the near-surface region of the Nd:YAG crystal, resulting in the significant enhancement of the optical nonlinearity of Nd:YAG and offering saturable absorption properties of the crystal at a wide wavelength band. The subsequent processing of the O5+ ion implantation and diamond saw dicing of crystal finally leads to the fabrication of monolithic waveguide with embedded Ag NPs. Under an optical pump, the Q-switched mode-locked waveguide lasers operating at 1 μm is realized with the pulse duration of 29.5 ps and fundamental repetition rate of 10.53 GHz, owing to the modulation of Ag NPs through evanescent field interaction with waveguide modes. This work introduces a new approach in the application of monolithic ultrafast laser devices by using embedded metallic NPs.
