Gain-switching pulse generation of Tm-doped fiber ring laser pumped with 1.6-µm laser diodes
✍ Scribed by H. Nakagami; S. Araki; H. Sakata
- Publisher
- John Wiley and Sons
- Year
- 2011
- Tongue
- English
- Weight
- 137 KB
- Volume
- 8
- Category
- Article
- ISSN
- 1612-2011
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✦ Synopsis
We present a Tm-doped fiber laser operating around 1.9 μm by bi-directional pumping with 1.6 μm-band laser diodes. The laser output pulse is built by using a gain-switching pump pulse with a bias pump pulse. The output pulse power is measured to 119 mW when the bias pump power and the gainswitching pulse power are 71.7 and 46.6 mW, respectively. The output power is changed by tuning the feedback ratio of the variable-ratio output coupler and maximized at the feedback ratio of 0.81. The laser wavelength varies from 1.88 to 1.92 μm depending on the length of the Tm-doped fiber.
Laser output wavelength, μm 1.92 1.90 1.88 1.86 0.4 0.6 0.8 1.0 1.2 Tm-doped fiber length, m
Laser output wavelength against the length of the Tm-doped fiber