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| Content Provider | IET Digital Library |
|---|---|
| Author | Hiti, Ahmed Shakir Al Masoodi, Ahmed H. H. Al Wong, Wei Ru Harun, Sulaiman Wadi |
| Abstract | This study experimentally demonstrates a Q-switched fibre laser using a new tungsten tri-oxide (WO3)-based saturable absorber (SA). Using the drop and casting approach, we managed to prepare a thin film that contained WO3 powders in polyvinyl alcohol. A small bit of the film was used to form an SA which was placed in a ytterbium-doped fibre laser cavity to generate a Q-switched laser. The laser, operating at 1063.78 nm, was realised at the threshold pump power of 85 mW with a repetition rate of 23.87 kHz and a pulse width of 5.56 μs. At the pump power of 147 mW, the laser produced the maximum pulse energy of 625 nJ, signal-to-noise ratio of 59 dB, the repetition rate of 39.79 kHz and pulse width of 2.37 μs. To the best of our knowledge, this is the first demonstration of using WO3 SA to generate the pulse laser in the 1 μm region. |
| Starting Page | 278 |
| Ending Page | 284 |
| Page Count | 7 |
| ISSN | 17518768 |
| Volume Number | 14 |
| e-ISSN | 17518776 |
| Issue Number | Issue 5, Oct (2020) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-opt/14/5 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-opt.2019.0153 |
| Journal | IET Optoelectronics |
| Publisher Date | 2020-04-20 |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | Casting Casting Approach Design of Specific Laser System Drop Approach Energy 625.0 NJ Fibre Laser Fibre Lasers And Amplifier Frequency 23.87 KHz Frequency 39.79 KHz Laser Beam Modulation Laser Cavity Resonator Laser Resonator And Cavities Mode Locking And Tuning Optical Pumping Optical Saturable Absorption Optical Saturation And Related Effect Optical Transient Phenomena Passively Q-switched Ytterbium Laser Polyvinyl Alcohol Powder Power 147.0 MW Power 85.0 MW Pulse Energy Pulse Laser Pulse Width Pulsing And Switching Q Switching Q-switched Fibre Laser Repetition Rate Self-induced Transparency Signal to Noise Ratio Thin Film Threshold Pump Power Time 2.37 Mus Time 5.56 Mus Tungsten Compound Tungsten Trioxide Film Absorber Tungsten Trioxide-based Saturable Absorber Wavelength 1.0 Mum Wavelength 1063.78 Nm WO3 Ytterbium Ytterbium-doped Fibre Laser Cavity |
| Content Type | Text |
| Resource Type | Article |
| Subject | Atomic and Molecular Physics, and Optics Electrical and Electronic Engineering |
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