Carbon nanotube mode lockers with enhanced nonlinearity via evanescent field interaction in D-shaped fibers

被引：226

作者：

Song, Yong-Won ^{[1
]}

Yamashita, Shinji

Goh, Chee S.

Set, Sze Y.

机构：

[1] Univ Tokyo, Dept Elect Engn, Tokyo 1138656, Japan

[2] Alnair Labs Corp, Tokyo 1540005, Japan

来源：

OPTICS LETTERS | 2007年 / 32卷 / 02期

关键词：

D O I：

10.1364/OL.32.000148

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We demonstrate a novel passive mode-locking scheme for pulsed lasers enhanced by the interaction of carbon nanotubes (CNTs) with the evanescent field of propagating light in a D-shaped optical fiber. The scheme features all-fiber operation as well as a long lateral interaction length, which guarantees a strong nonlinear effect from the nanotubes. Mode locking is achieved with less than 30% of the CNTs compared with the amount of nanotubes used for conventional schemes. Our method also ensures the preservation of the original morphology of the individual CNTs. The demonstrated pulsed laser with our CNT mode locker has a repetition rate of 5.88 MHz and a temporal pulse width of 470 fs. (c) 2006 Optical Society of America.

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页码：148 / 150

页数：3

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