Nakazawa Masataka, Nakahara Seiji, Hirooka Toshihiko, Yoshida Masato, Kaino Toshikuni, Komatsu Kyoji
Research Institute of Electrical Communication, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan.
Opt Lett. 2006 Apr 1;31(7):915-7. doi: 10.1364/ol.31.000915.
We report saturable absorber materials in the 1.5 microm band that consist of poly-methyl-methacrylate (PMMA) and polystyrene (PS) polymers with single-wall carbon nanotubes (SWNTs). A very uniform dispersion of SWNT in PMMA and PS polymers has been realized by using chlorobenzene or tetrahydrofuran as a dispersion solvent. These materials, which are as thick as 1 mm, are easily optically polished on both surfaces. This was difficult to achieve with previous thin-film materials. By incorporating PMMA/SWNT as a saturable absorber, a 171 fs pulse is successfully generated in a passively mode-locked fiber laser.
我们报道了在1.5微米波段的可饱和吸收体材料，其由聚甲基丙烯酸甲酯（PMMA）、聚苯乙烯（PS）聚合物与单壁碳纳米管（SWNT）组成。通过使用氯苯或四氢呋喃作为分散溶剂，实现了SWNT在PMMA和PS聚合物中的非常均匀的分散。这些厚度达1毫米的材料在两个表面都易于进行光学抛光。这对于先前的薄膜材料来说是难以实现的。通过将PMMA/SWNT用作可饱和吸收体，在被动锁模光纤激光器中成功产生了171飞秒脉冲。
