Self-starting mode-locked Cr:ZnS laser using single-walled carbon nanotubes with resonant absorption at 2.4 μm: ZnS laser using single-walled carbon nanotubes with resonant absorption at 2.4 mu m

Research output: Contribution to journalArticleScientificpeer-review

Researchers

  • Daiki Okazaki
  • Hayato Arai
  • Esko Kauppinen

  • Anton Anisimov
  • Shohei Chiashi
  • Shigeo Maruyama
  • Norihito Saito
  • Satoshi Ashihara

Research units

  • University of Tokyo
  • Natl Inst Adv Ind Sci & Technol, National Institute of Advanced Industrial Science & Technology (AIST), Energy Nano Engn Lab
  • RIKEN, RIKEN, RIKEN Ctr Adv Photon, Photon Control Technol Team
  • Canatu Oy

Abstract

We develop a mode-locked Cr:ZnS polycrystalline laser using single-walled carbon nanotubes (SWCNTs) that have resonant absorption at the wavelength of 2.4 μm. The laser generates ultrashort pulses of 49 fs duration, a 2.4 μm center wavelength, and a 9.2 THz (176 nm) spectral span at a repetition rate of 76 MHz. We also confirm self-starting of the mode-locked operation. SWCNTs, if appropriately controlled in terms of their diameters, prove to be useful as ultrafast saturable absorbers in the mid-infrared region.

Details

Original languageEnglish
Pages (from-to)1750-1753
Number of pages4
JournalOptics Letters
Volume44
Issue number7
Publication statusPublished - 1 Apr 2019
MoE publication typeA1 Journal article-refereed

    Research areas

  • HIGH-HARMONIC-GENERATION, DYNAMICS

ID: 33073288