2015

Self-sweeping single-frequency fiber laser

A fiber laser with frequency tuning based on new physical principles is demonstrated. A formation in active medium of dynamic spatial gain and refractive index gratings by a standing wave field leads to the generation of sequence of pulses, which equally spaced in time and frequency domain. Each pulse has a spectral width of less than 1 MHz and has the same phase as previous one. The possibility of practical applications of the source for interrogation of fiber sensors based on Bragg gratings and for short pulse synthesis by coherent combining of the sequence is proved. The simplicity and robustness are additional benefits of the laser.

Publications

1. Lobach I.A. et al., Self-scanned single-frequency operation of a fiber laser driven by a self-induced phase grating, Laser Phys. Lett., 11, No. 4, 045103 (2014).
2. Lobach I.A. et al., Single-frequency Bismuth-doped fiber laser with quasi-continuous self-sweeping, Opt. Express, 23, 24833-24842 (2015).
3. Lobach I.A. et al., Fourier synthesis with single-mode pulses from a multimode laser, Opt. Lett., 40, 3671-3674 (2015).
4. Lobach I.A., Kablukov S.I., Application of a self-sweeping Yb-doped fiber laser for high-resolution characterization of phase-shifted FBGs, J. Lightwave Technol., 31, No. 18, 2982-2987 (2013).