Generation of 15-nJ bunched noise-like pulses with 93-nm bandwidth in an erbium-doped fiber ring laser

We report on the generation of high power superbroad spectrum bunched noise-like pulses from a passively mode-locked erbium-doped fiber ring laser without using the stretched-pulse technique. The maximum 3-dB spectral bandwidth of the noise-like pulses is about 93 nm with an energy of about 15 nJ. We further show numerically that the superbroad spectrum of the pulses is caused by the transform-limited feature of the pulses together with the Raman self-frequency shift effect.

[1]  I. Duling.  All-fiber ring soliton laser mode locked with a nonlinear mirror. , 1991, Optics letters.

[2]  C. Paré,et al.  Solitary pulses in an amplified nonlinear dispersive medium. , 1989, Optics letters.

[3]  Masataka Nakazawa,et al.  Low threshold, 290 fs erbium‐doped fiber laser with a nonlinear amplifying loop mirror pumped by InGaAsP laser diodes , 1991 .

[4]  C R Doerr,et al.  Technique for obtaining high-energy ultrashort pulses from an additive-pulse mode-locked erbium-doped fiber ring laser. , 1994, Optics letters.

[5]  S K Turitsyn,et al.  Soliton and collapse regimes of pulse generation in passively mode-locking laser systems. , 1995, Optics letters.

[6]  I. Duling.  Dispersion in rare-earth-doped fibers. , 1991 .

[7]  L. Mollenauer,et al.  Discovery of the soliton self-frequency shift. , 1986, Optics letters.

[8]  Hermann A. Haus,et al.  Ultrashort-pulse fiber ring lasers , 1997 .

[9]  High-energy femtosecond stretched-pulse fiber laser with a nonlinear optical loop mirror. , 2002 .

[10]  Y. Silberberg,et al.  Noiselike pulses with a broadband spectrum generated from an erbium-doped fiber laser. , 1997, Optics letters.

[11]  Frank W. Wise,et al.  Generation of 50-fs, 5-nJ pulses at 1.03 μm from a wave-breaking-free fiber laser , 2003 .

[12]  D. Tang,et al.  Soliton collapse and bunched noise-like pulse generation in a passively mode-locked fiber ring laser. , 2005, Optics express.

[13]  Hermann A. Haus,et al.  Stretched-Pulse Additive Pulse Mode-Locking in Fiber , 1994 .

[14]  Jin U. Kang.  Broadband quasi-stationary pulses in mode-locked fiber ring laser , 2000 .