Buried waveguide in neodymium-doped phosphate glass obtained by femtosecond laser writing using a do

• 作 者: 龙学文 白晶 刘欣 赵卫 程光华
• 机 构: State Key Laboratory of Transient Optics and Photonics, Xi’an Institute of Optics and Precision Mech
• 出 处: Chinese Optics Letters
• 发表日期: 2013年10期
• 关键词: waveguide neodymium writing reconstructed buried irradiated refractive separated

We fabricate a buried channel waveguide in neodymium-doped phosphate glass using a double line approach by femtosecond laser writing.Raman spectra reveal an expansion of the glass network in the laser irradiated region.Given the stress-induced positive refractive index change,waveguiding between two separated tracks is demonstrated.The refractive index difference profile of the waveguide is reconstructed from the measured near-field mode.Propagation loss is measured by scattering technique.Microluminescence spectra reveal that the Nd3+fluorescence property is not significantly affected by waveguide formation process,which indicates that the inscribed waveguide is a good candidate for active device.

We fabricate a buried channel waveguide in neodymium-doped phosphate glass using a double line approach by femtosecond laser writing. Raman spectra reveal an expansion of the glass network in the laser irradiated region. Gain the stress-induced positive refractive index change, waveguiding between two The separated refractive index difference profile of the waveguide is reconstructed from the measured near-field mode. Propagation loss is measured by a scattering technique. Microluminescence spectra reveal that the Nd3 + fluorescence property is not significantly affected by the waveguide formation process, which indicates that the inscribed waveguide is a good candidate for active device.