Yb<sup>3+</sup>-ring-doped fiber for high-energy pulse amplification
We report what is to our knowledge the first demonstration of pulse amplification in a cw-pumped fiber in which the doped gain medium has a ring shape surrounding a single-mode core. For a given pump power, ring doping reduces the gain and hence the power lost to amplified spontaneous emission. Ther...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
1997.
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| Subjects: | |
| Online Access: | Get fulltext |
| Summary: | We report what is to our knowledge the first demonstration of pulse amplification in a cw-pumped fiber in which the doped gain medium has a ring shape surrounding a single-mode core. For a given pump power, ring doping reduces the gain and hence the power lost to amplified spontaneous emission. Thereby, a significantly larger amount of energy can be stored in the amplifier. Using an Yb<sup>3+</sup>-doped fiber pumped by 540 mW of power at 1000 nm, we measured 69 mJ of extracted pulse energy at 1047 nm, the highest value reported to date from a single-mode Yb<sup>3+</sup>-doped fiber. We predict that a fiber cladding pumped by a diode bar can produce pulse energies in excess of 1 mJ. |
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