Abstract

Using a master - slave configuration, a robust synchronization was achieved for two-color Erbium and Ytterbium mode-locked fiber lasers. Due to enhanced nonlinear interaction in the fiber, noise-free pulse-locking was achieved allowing for a cavity mismatch tolerance of 140 μm. This is the highest tolerable cavity-length difference ever been obtained for synchronized mode-locked oscillators.

© 2004 Optical Society of America

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References

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  1. O. G. Okhotnikov, L. Gomes, N. Xiang, T. Jouhti, and A. B. Grudinin, �??Mode-locked ytterbium fiber laser tunable in the 980-1070 -nm spectral range,�?? Opt. Lett. 28, 1522 (2003).
    [CrossRef] [PubMed]
  2. O. G. Okhotnikov, T. Jouhti, J. Konttinen, S. Karirinne and M. Pessa, �??1.5- µm monolithic GaInNAs semiconductor saturable-absorber mode locking of an erbium fiber laser,�?? Opt. Lett. 28, 364 (2003).
    [CrossRef] [PubMed]
  3. M. Rusu, S. Karirinne, M. Guina, A. B. Grudinin, and O. G. Okhotnikov, �??Femtosecond neodymium-doped fiber laser operating in the 894-909 nm spectral range,�?? IEEE Photon Technology Lett. 16, 1029 (2004).
    [CrossRef]
  4. T. R. Schibli, J. Kim, O. Kuzucu, J. T. Gopinath, S. N. Tandon, G. S. Petrich, L. A. Kolodziejski, J. G. Fujimoto, E. P. Ippen, and F. X. Kaertner, �??Attosecond active synchronization of passively mode-locked lasers by balanced cross correlation,�?? Opt. Lett. 28, 947 (2003).
    [CrossRef] [PubMed]
  5. R. K. Shelton, S. M. Foreman, L-S Ma, J. L. Hall, H. C. Kapteyn, M. M. Murnane, M. Notcutt, and J. Ye, �??Subfemtosecond timing jitter between two independent, actively synchronized, mode-locked lasers,�?? Opt. Lett. 27, 312 (2002).
    [CrossRef]
  6. A. Leitenstofer, C. Fürst, and A. Laubereau, �??Widely tunable two-color mode-locked Ti:sapphire laser with pulse jitter of less than 2 fs,�?? Opt. Lett. 20, 916 (1995).
    [CrossRef]
  7. Z. Wei, Y. Kobayashi, Z. Zhang, and K. Torizuka, �??Generation of two-color femtosecond pulses by self-synchronizing Ti:sapphire and Cr:forsterite lasers,�?? Opt. Lett. 26, 1806 (2001).
    [CrossRef]
  8. Z. Wei, Y. Kobayashi, and K. Torizuka, �??Relative carrier-envelope phase dynamics between passively synchronized Ti:sapphire and Cr:forsterite lasers,�?? Opt. Lett. 27, 2121 (2002).
    [CrossRef]
  9. M. Betz, F. Sotier, F. Tauser, S. Trumm, A. Laubereau, and A. Leitenstorfer, �??All-optical phase locking of two femtosecond Ti:sapphire lasers: a passive coupling mechanism beyond the slowly varying amplitude approximation,�?? Opt. Lett. 29, 629 (2004).
    [CrossRef] [PubMed]
  10. M. Rusu, R. Herda and O. G. Okhotnikov, �??Passively synchronized Erbium (1550 nm) and Ytterbium (1040 nm) mode-locked fiber lasers sharing the cavity,�?? Opt. Lett. 29, (October 2004).
    [CrossRef] [PubMed]
  11. Femtomaster fibre laser, Fianium Ltd, <a href="http://www.fianium.com/products/femto.htm">http://www.fianium.com/products/femto.htm</a>
  12. C. Furst, A. Leitenstorfer and A. Laubereau, �??Mechanism for Self-Synchronization of Femtosecond Pulses in a Two-Color Ti:Sapphire Laser,�?? IEEE Sel. Topics in Quant. Electron. 2, 473 (1996).
    [CrossRef]

IEEE Photon Technology Lett. (1)

M. Rusu, S. Karirinne, M. Guina, A. B. Grudinin, and O. G. Okhotnikov, �??Femtosecond neodymium-doped fiber laser operating in the 894-909 nm spectral range,�?? IEEE Photon Technology Lett. 16, 1029 (2004).
[CrossRef]

IEEE Sel. Topics in Quant. Electron. (1)

C. Furst, A. Leitenstorfer and A. Laubereau, �??Mechanism for Self-Synchronization of Femtosecond Pulses in a Two-Color Ti:Sapphire Laser,�?? IEEE Sel. Topics in Quant. Electron. 2, 473 (1996).
[CrossRef]

Opt. Lett. (9)

A. Leitenstofer, C. Fürst, and A. Laubereau, �??Widely tunable two-color mode-locked Ti:sapphire laser with pulse jitter of less than 2 fs,�?? Opt. Lett. 20, 916 (1995).
[CrossRef]

Z. Wei, Y. Kobayashi, Z. Zhang, and K. Torizuka, �??Generation of two-color femtosecond pulses by self-synchronizing Ti:sapphire and Cr:forsterite lasers,�?? Opt. Lett. 26, 1806 (2001).
[CrossRef]

R. K. Shelton, S. M. Foreman, L-S Ma, J. L. Hall, H. C. Kapteyn, M. M. Murnane, M. Notcutt, and J. Ye, �??Subfemtosecond timing jitter between two independent, actively synchronized, mode-locked lasers,�?? Opt. Lett. 27, 312 (2002).
[CrossRef]

Z. Wei, Y. Kobayashi, and K. Torizuka, �??Relative carrier-envelope phase dynamics between passively synchronized Ti:sapphire and Cr:forsterite lasers,�?? Opt. Lett. 27, 2121 (2002).
[CrossRef]

O. G. Okhotnikov, T. Jouhti, J. Konttinen, S. Karirinne and M. Pessa, �??1.5- µm monolithic GaInNAs semiconductor saturable-absorber mode locking of an erbium fiber laser,�?? Opt. Lett. 28, 364 (2003).
[CrossRef] [PubMed]

T. R. Schibli, J. Kim, O. Kuzucu, J. T. Gopinath, S. N. Tandon, G. S. Petrich, L. A. Kolodziejski, J. G. Fujimoto, E. P. Ippen, and F. X. Kaertner, �??Attosecond active synchronization of passively mode-locked lasers by balanced cross correlation,�?? Opt. Lett. 28, 947 (2003).
[CrossRef] [PubMed]

O. G. Okhotnikov, L. Gomes, N. Xiang, T. Jouhti, and A. B. Grudinin, �??Mode-locked ytterbium fiber laser tunable in the 980-1070 -nm spectral range,�?? Opt. Lett. 28, 1522 (2003).
[CrossRef] [PubMed]

M. Betz, F. Sotier, F. Tauser, S. Trumm, A. Laubereau, and A. Leitenstorfer, �??All-optical phase locking of two femtosecond Ti:sapphire lasers: a passive coupling mechanism beyond the slowly varying amplitude approximation,�?? Opt. Lett. 29, 629 (2004).
[CrossRef] [PubMed]

M. Rusu, R. Herda and O. G. Okhotnikov, �??Passively synchronized Erbium (1550 nm) and Ytterbium (1040 nm) mode-locked fiber lasers sharing the cavity,�?? Opt. Lett. 29, (October 2004).
[CrossRef] [PubMed]

Other (1)

Femtomaster fibre laser, Fianium Ltd, <a href="http://www.fianium.com/products/femto.htm">http://www.fianium.com/products/femto.htm</a>

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Figures (8)

Fig. 1.
Fig. 1.

Configuration of the master-slave ultrashort pulse lasers synchronization setup.

Fig. 2.
Fig. 2.

(a) Autocorrelation trace of the master laser output pulse. Corresponding pulse spectrum is shown as an inset.

Fig. 2.
Fig. 2.

(b) Autocorrelation trace of slave laser output pulse. Corresponding pulse spectrum is shown as an inset.

Fig. 3.
Fig. 3.

Cavity detuning diagram for master/slave configuration: measured repetition rate of the Yb-fiber slave laser versus its cavity-length variation. The synchronization range is highlighted.

Fig. 4.
Fig. 4.

The wavelength of the slave laser versus the offset of the cavity length. The anomalous dispersion of the slave laser cavity is 2 ps/nm.

Fig. 5.
Fig. 5.

Slave laser cavity mismatch tolerance versus master laser pulse energy. The anomalous dispersion of the slave laser cavity is 2 ps/nm.

Fig. 6.
Fig. 6.

Slave laser cavity mismatch tolerance versus average dispersion of the cavity. The master pulse energy is 1.0 nJ.

Fig. 7.
Fig. 7.

Variation of RF power at the slave laser output in the synchronized mode. The central frequency corresponds to the repetition rate of the master laser. Bandwidth - 100 Hz.

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