For the first time to the authors' knowledge, an integrated optical distributed Bragg reflector laser with a fixed photorefractive grating in LiNbO3 is demonstrated. Sample preparation, grating fabrication, and laser characteristics are reported. The device is pumped by a fiber pigtailed laser diode (λp≈1480 nm) through the Bragg grating in a double-pass configuration, yielding an emission in the backward direction at λ=1531.7nm . The laser threshold is 40 mW; as much as 5 mW of output power has been obtained at 110 mW of launched pump power in cw operation.
© 1998 Optical Society of America
Ch. Becker, A. Greiner, Th. Oesselke, A. Pape, W. Sohler, and H. Suche, "Integrated optical Ti:Er:LiNbO3 distributed Bragg reflector laser with a fixed photorefractive grating," Opt. Lett. 23, 1194-1196 (1998)