标题:Femtosecond-laser-written superficial cladding waveguides in Nd:CaF2crystal
作者:Li, Rang ;Nie, Weijie ;Lu, Qingming ;Cheng, Chen ;Shang, Zhen ;zquez de Aldana, Javier R. ;Chen, Feng
作者机构:[Li, Rang ;Nie, Weijie ;Cheng, Chen ;Shang, Zhen ;Shang, Zhen ;Chen, Feng ] School of Physics, State Key Laboratory of Crystal Materials, Shandong Uni 更多
通讯作者:Chen, Feng
来源:Optics and Laser Technology
出版年:2017
卷:92
页码:163-167
DOI:10.1016/j.optlastec.2017.01.026
摘要:We report on the superficial cladding waveguides fabricated by direct femtosecond laser writing in Nd: CaF2crystal with three different groups of parameters. The lowest propagation loss of waveguides has been determined to be 0.7 dB/cm at wavelength of 632.8 nm along TE polarization. The near fundamental modal distributions have been imaged through the end-face coupling technique. The guidance of the waveguides is found to possess low sensitivity on polarization of the probe light. By using a confocal microscope system, the micro-photoluminescence mappings and micro-fluorescence spectra are also obtained, which indicates the photoluminescence features of the Nd3+ions are well preserved in the waveguide cores after direct femtosecond laser writing.
© 2017 Elsevier Ltd
收录类别:EI
资源类型:期刊论文
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