1. Watt-level green random laser at 532 nm by SHG of a Yb-doped fiber laser
- Author
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Rota-Rodrigo, S., Gouhier, B., Dixneuf, C., Antoni-Micollier, L., Guiraud, G., Leandro, D., Lopez-Amo, M., Traynor, N., and Santarelli, G.
- Subjects
Physics - Optics - Abstract
We have developed a Watt-level random laser at 532 nm. The laser is based on a 1064 nm random distributed ytterbium-gain assisted fiber laser seed with a 0.35 nm line-width 900mW polarized output power. A study for the optimal length of the random distributed mirror was carried out. An ytterbium-doped fiber master oscillator power amplifier architecture is used to amplify the random seeder laser without additional spectral broadening up to 20 W. By using a periodically poled lithium niobate (PPLN) crystal in a single pass configuration we generate in excess of 1 W random laser at 532 nm by second harmonic generation with an efficiency of 9 %. The green random laser exhibits an instability <1 %, optical signal to noise ratio >70 dB, 0.1 nm linewidth and excellent beam quality.
- Published
- 2019
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