High-quality and Large-size Topological Insulator Bi2Te3-Gold Saturable Absorber Mirror for Mode-Locking Fiber Laser

Hou-Ren Chen, Chih Ya Tsai, Hsin-Ming Cheng, Kuei-Huei Lin, Po Hsiu Yen, Chyong-Hua Chen, Wen Feng Hsieh

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

A novel high-quality, large-size, reflection-type topological insulator Bi2Te3-Gold (BG) film-based nonlinear optical modulator has been successfully fabricated as a two-dimensional saturable absorber mirror (SAM) by pulsed laser deposition (PLD). This BG-SAM possesses saturation fluence of 108.3 mu J/cm(2), modulation depth (Delta R) of 6.5%, non-saturable loss of 38.4%, high damage threshold above 1.354 mJ/cm(2) and excellent uniformity providing for the generation of passive mode-locked (ML) pulses for erbium-doped fiber lasers (EDFLs) on a large sample area. Under 124 mW 976 nm pumping, We obtained 452-fs continuous-wave ML pulses with pulse energy of 91 pJ and full width at halfmaximum (FWHM) of 6.72-nm from this EDFL. The results clearly evidence that the PLD is an efficient method for fabricating BG-SAM that is suitable for a compact ultrafast ML fiber laser system.
Original languageEnglish
Article number38444
JournalScientific Reports
Volume6
DOIs
StatePublished - 5 Dec 2016

Keywords

  • OPTICAL-PROPERTIES
  • Graphene
  • BI2SE3
  • SB2TE3
  • GENERATION
  • FILMS
  • GHZ
  • FS

Fingerprint Dive into the research topics of 'High-quality and Large-size Topological Insulator Bi2Te3-Gold Saturable Absorber Mirror for Mode-Locking Fiber Laser'. Together they form a unique fingerprint.

Cite this