Ultrafast laser waveguide writing: lithium niobate and the role of circular polarization and picosecond pulse width

被引：62

作者：

Nejadmalayeri, Amir H.

Herman, Peter R.

机构：

[1] Univ Toronto, Photon Grp, Dept Elect & Comp Engn, Toronto, ON M5S 3G4, Canada

[2] Univ Toronto, Inst Opt Sci, Toronto, ON M5S 3G4, Canada

来源：

OPTICS LETTERS | 2006年 / 31卷 / 20期

关键词：

D O I：

10.1364/OL.31.002987

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

For the first time to our knowledge, ultrafast laser writing has generated room-temperature stable guided-wave optics in bulk lithium niobate for the telecommunication spectrum. Among a seven-dimensional parameter space for waveguide optimization, two frequently overlooked parameters, pulse duration and polarization, were found to be key in overcoming undesired nonlinear optical responses imposed by this material. Single-mode waveguides were best formed with circularly polarized light having a relatively long pulse duration of similar to 1.0 ps. The waveguides were highly polarization dependent and guided in both telecommunication bands near 1300 and 1550 nm, exhibiting losses as low as 0.7 dB/cm. (c) 2006 Optical Society of America.

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页码：2987 / 2989

页数：3

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