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Optical Engineering

Femtosecond laser-written lithium niobate waveguide laser operating at 1085 nm
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Paper Abstract

We report on the channel waveguide lasers at 1085 nm in femtosecond laser written Type II waveguides in an Nd:MgO:LiNbO3 crystal. The waveguide was constructed in a typical dual-line approach. In the geometry, we found that four vicinal regions of the track pair could guide light propagation. In addition, these guiding cores support polarization-dependent-guided modes. The propagation losses of the waveguides were measured to be as low as 1  dB/cm. Under an optical pump at 808 nm, the continuous-wave waveguide lasing at 1085 nm was generated, reaching a slope efficiency of 27% and maximum output power of 8 mW. The lasing threshold was 71 mW. Our results show that with the femtosecond laser written Nd:MgO:LiNbO3 waveguide as the miniature light source, it was possible to construct all-LiNbO3-based integrated devices for diverse photonic applications.

Paper Details

Date Published: 23 October 2014
PDF: 4 pages
Opt. Eng. 53(10) 107109 doi: 10.1117/1.OE.53.10.107109
Published in: Optical Engineering Volume 53, Issue 10
Show Author Affiliations
Yang Tan, Shandong Univ. (China)
Javier Rodríguez Vázquez de Aldana, Univ. de Salamanca (Spain)
Feng Chen, Shandong Univ. (China)

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