Abstract

We report what we believe to be the first demonstration of stable gain-switched 845nm pulse generation (Er3+: S324I1324 transition) by a weak modulated 1550nm seed laser, from an Er3+-doped fluoride fiber pumped by a cw 974nm laser diode. When the pump power of the 974nm laser diode is set to a certain value, the injection of a weak (<1mW) modulated 1550nm seed laser into the 845nm lasing cavity can depopulate the lower state I1324 of 845nm lasing, switch the gain to regulate the conventionally chaotic spiking, and generate stable synchronous 845nm pulse trains with the repetition rate up to 100kHz.

© 2008 Optical Society of America

Full Article  |  PDF Article

References

  • View by:
  • |
  • |

  1. W. Koechner, Solid State Laser Engineering (Springer-Verlag, 1999).
  2. A. Yariv, Quantum Electronics (Wiley, 1975).
  3. S. Schuster and H. Haug, J. Opt. Soc. Am. B 13, 1605 (1996).
    [Crossref]
  4. P. F. Moulton, J. Opt. Soc. Am. B 3, 125 (1996).
    [Crossref]
  5. J. J. Zayhowski, J. Ochoa, and A. Mooradian, Opt. Lett. 14, 1318 (1989).
    [Crossref] [PubMed]
  6. M. Jiang and P. Tayebati, Opt. Lett. 32, 1797 (2007).
    [Crossref] [PubMed]
  7. S. K. Nikumb, H. J. J. Seguin, V. A. Seguin, R. J. Willis, Z. Cheng, and H. Reshef, Appl. Opt. 28, 1624 (1989).
    [Crossref] [PubMed]
  8. G. S. Qin and Y. Ohishi, IEEE J. Quantum Electron. 43, 316 (2007).
    [Crossref]
  9. Y. Ohishi, M. Yamada, T. Kanamori, S. Sudo, and M. Shimizu, Opt. Lett. 22, 1235 (1997).
    [Crossref] [PubMed]
  10. M. Cai and K. J. Vahala, Opt. Lett. 26, 884 (2001).
    [Crossref]
  11. E. P. Ostby, L. Yang, and K. J. Vahala, Opt. Lett. 32, 2650 (2007).
    [Crossref] [PubMed]
  12. S. M. Spillane, T. J. Kippenberg, and K. J. Vahala, Nature 415, 621 (2002).
    [Crossref] [PubMed]

2007 (3)

2002 (1)

S. M. Spillane, T. J. Kippenberg, and K. J. Vahala, Nature 415, 621 (2002).
[Crossref] [PubMed]

2001 (1)

1997 (1)

1996 (2)

1989 (2)

Cited By

OSA participates in Crossref's Cited-By Linking service. Citing articles from OSA journals and other participating publishers are listed here.

Alert me when this article is cited.


Figures (2)

Fig. 1
Fig. 1

(a) Upconversion mechanism of Er 3 + -doped fluoride fiber excited at 974 nm , (b) cavity structure of a gain-switched 845 nm laser using a Er 3 + -doped fluoride fiber pumped at 974 nm , (c) dependence of the output power of 845 nm lasing on the pump power of the 974 nm LD. Inset of (c): the emission spectra of 845 nm lasing with the injection of a 1 mW 1550 nm seed laser into the 845 nm lasing cavity.

Fig. 2
Fig. 2

(a) Dependence of the relaxation oscillation of 845 nm lasing when the modulation rate of a 1 mW 1550 nm seed laser is set to 1 kHz (b) stable gain-switched 845 nm pulse train with a repetition rate of 40, 80, and 100 kHz , respectively, (c) the expanded gain-switched 845 nm pulse trains when the modulation rate of a 1 mW 1550 nm seed laser was set at 40, 80, 100, and 200 kHz , respectively, (d) the pulse shape of the gain-switched 845 nm laser and that of the modulated 1550 nm seed laser.

Metrics