Ion-implanted optical-stripe waveguides in neodymium-doped calcium barium niobate crystals.
We report on the fabrication and characterization of optical-stripe waveguides in neodymium-doped calcium barium niobate (Nd:CBN) crystals by using He ion implantation assisted with a mask. The guided-mode profiles are successfully modeled through numerical simulations. After annealing at 200 degrees C for 30 min, the waveguide propagation loss could be reduced down to ~3 dB/cm. Room-temperature microluminescence and micro-Raman investigations reveal that the crystal bulk features are well preserved in the active volume of the waveguide, suggesting possible applications as integrated photonic devices.
School of Physics, Shandong University, 250100 Jinan, China.
Yang
Y
Tan
Feng
F
Chen
Daniel
D
Jaque
Wen-Lan
WL
Gao
Huai-Jin
HJ
Zhang
Jose Garcia
JG
Solé
Hong-Ji
HJ
Ma