Mode-locking nanoporous alumina membrane embedded with carbon nanotube saturable absorber

Kurashima, Yuichi; Yokota, Yoshihiko; Miyamoto, Iwao; Kataura, Hiromichi; Sakakibara, Youichi
June 2009
Applied Physics Letters;6/1/2009, Vol. 94 Issue 22, p223102
Academic Journal
The saturable absorption effect of semiconducting single-wall carbon nanotubes (SWCNTs) covering the near-infrared region is promising for mode-locking devices of short pulse lasers. However, an issue remains that the heat generated at the SWCNTs would destroy the devices. In this research, we fabricated a nanostructured heat sink in which the SWCNTs are stuffed into specially developed nanopores of heat conductive alumina. Actually, it induced stable mode-locked operation of an Er fiber laser for over 4 months.


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