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

Daiki Okazaki, Hayato Arai, Esko Kauppinen, Anton Anisimov, Shohei Chiashi, Shigeo Maruyama, Norihito Saito, Satoshi Ashihara*

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

10 Citations (Scopus)

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.

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

Keywords

  • HIGH-HARMONIC-GENERATION
  • DYNAMICS

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