Passive Q-Switching with Erbium-Doped Fiber Laser Using Titanium Dioxide Colloid as a Saturable Absorber

Norizan Ahmed, N. H. Kamarulzaman, Nur Farhanah Zulkipli, Suziana Omar, Zulzilawati Jusoh, Husna A. Rahman, Baktiar Musa, Moh Yasin, Sulaiman Wadi Harun

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

We successfully demonstrate a Q-switched erbium-doped fiber laser (EDFL) using titanium dioxide (TiO2) coated onto a fiber ferrule as a saturable absorber (SA). The fiber ferrule is immersed into a TiO2 colloid, using the dip-coating method to prepare the SA. Stable pulses operating at 1,565 nm with a 3 dB bandwidth of 1.9 nm are achieved within the pump power range from 63.41 to 104.62 mW. A maximum repetition rate of 72.89 kHz and a pulse energy of 29.91 nJ are respectively generated, while the minimum pulse width is 3.02 μs. To the best of our knowledge, this is the first demonstration of EDFL passive Q-switching using TiO2 colloid.

Original languageEnglish
Pages (from-to)595-599
Number of pages5
JournalJournal of Russian Laser Research
Volume43
Issue number5
DOIs
Publication statusPublished - Sept 2022

Keywords

  • TiO colloids
  • energy efficiency
  • passive Q-switching
  • saturable absorber

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