Abstract
Continuous-wave oscillation characteristics of a 1. 06- mu m Nd**3** plus :YAG laser with a long optical-fiber resonator were investigated. Output power of 27 mW was obtained for a low-loss graded-index multimode fiber 83 m in length. Laser oscillations with a cavity length up to 770 m were attained by using a graded-index fiber. The mode pattern of the output beam from a mirror coated at the fiber end face exhibited a typical speckle pattern. A single-mode fiber with a length of 1 m was also used as the laser cavity, and a clear Gaussian beam with an output power of 1 mW was observed.
| Original language | English |
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| Pages (from-to) | 838-842 |
| Number of pages | 5 |
| Journal | Journal of the Optical Society of America |
| Volume | 73 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 1983 |