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Optica Publishing Group
  • Journal of Lightwave Technology
  • Vol. 31,
  • Issue 5,
  • pp. 756-760
  • (2013)

550-mW Output Power From a Narrow Linewidth All-Phosphate Fiber Laser

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Abstract

We present a compact monolithic all-phosphate glass fiber laser with up to 550 mW of output power operating on a single longitudinal mode. We measured a linewidth of less than 60 kHz and relaxation oscillation peak amplitudes below ${-}100$ dB/Hz without active RIN-supression. The laser cavity has been formed by inscribing fiber Bragg gratings (FBG) directly into heavily Er3+Yb3+ doped phosphate glass fiber using femtosecond laser pulses and a phasemask. The compact form factor and higher output power combined with the low noise and narrow line width characteristic make this laser an ideal candidate for ranging, interferometry and sensing applications.

© 2012 IEEE

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