[12p-B415-1~14] 3.6 Ultrashort-pulse and high-intensity lasers

[12p-B415-8] [Young Scientist Presentation Award Speech] Cr²⁺: ZnS mid-infrared mode-locked laser using single walled carbon nanotubes III

〇Daiki Okazaki¹, Hayato Arai², Kauppinen Esko³, Shohei Chiashi², Shigeo Maruyama^2,4, Satoshi Ashihara¹ (1.IIS, UTokyo, 2.The Faculty of Eng., UTokyo, 3.Aalto Univ., 4.AIST)

Keywords:mid-infrared, laser, femtosecond

In this research, we are developing a Cr:ZnS mid-infrared femtosecond laser using a SWCNT film with a diameter larger than usual as a saturable absorber. Here we show experimentally that this diameter control can provide excellent saturable absorption characteristics of SWCNT at the oscillation wavelength of Cr:ZnS. Subsequently, SWCNT samples having different thicknesses were prepared, and the oscillation characteristics of the mode-locked Cr:ZnS laser obtained using them were evaluated.