Noise of the stretched pulse fiber laser. II. Experiments

For pt.I see ibid., p.649, 1997. The noise characteristics of the stretched pulse fiber ring laser are determined from the power spectrum of the current of a detector illuminated by the output pulse train. Amplitude fluctuations as low as 0.05% of the pulse energy and jitter <80 fs (measurement time=0.09 s) are obtained with no external stabilization. These are the lowest noise levels reported to date for a passively mode-locked laser. The experimental results are compared with the noise theory of the companion paper. Good agreement is obtained between theory and experiment. Comparison with theory also shows that the jitter at frequencies higher than 60 Hz is due to amplified spontaneous emission (quantum) fluctuations when the measurement time is on the order of 0.1 s.

[1]  D. Dykaar,et al.  Timing-jitter stabilization of a colliding-pulse mode-locked laser by active control of the cavity length. , 1991, Optics letters.

[2]  C E Soccolich,et al.  Noise characterization of femtosecond color-center lasers. , 1990, Optics letters.

[3]  Hermann A. Haus,et al.  All-solid-state femtosecond source at 1.55 μm , 1995 .

[4]  Ian Fuss.  An interpretation of the spectral measurement of optical pulse train noise , 1994 .

[5]  Wilson Sibbett,et al.  Noise characterization of mode-locked color-center laser sources , 1990 .

[6]  H. Haus,et al.  Self-starting additive pulse mode-locked erbium fibre ring laser , 1992 .

[7]  J. Whitaker,et al.  Noise characterization of a self-mode-locked Ti:sapphire laser. , 1992, Optics letters.

[8]  Hermann A. Haus,et al.  Noise of mode-locked lasers , 1993, Optical Society of America Annual Meeting.

[9]  Shu Namiki,et al.  Observation of nearly quantum-limited timing jitter in an all-fiber ring laser , 1996 .

[10]  Hermann A. Haus,et al.  Quantum noise in a solitonlike repeater system , 1991 .

[11]  H. Haus,et al.  77-fs pulse generation from a stretched-pulse mode-locked all-fiber ring laser. , 1993, Optics letters.

[12]  E. Desurvire,et al.  Erbium‐Doped Fiber Amplifiers: Principles and Applications , 1995 .

[13]  Govind P. Agrawal,et al.  Nonlinear Fiber Optics , 1989 .

[14]  W Sibbett,et al.  Regeneratively initiated self-mode-locked Ti:sapphire laser. , 1991, Optics letters.

[15]  S. Kelly,et al.  Characteristic sideband instability of periodically amplified average soliton , 1992 .

[16]  W Sibbett,et al.  Nearly quantum-limited timing jitter in a self-mode-locked Ti:sapphire laser. , 1994, Optics letters.

[17]  Kohichi Robert Tamura.  Additive pulse mode-locked erbium-doped fiber lasers , 1994 .

[18]  M. Nakazawa,et al.  Broadband light generation by femtosecond pulse amplification with stimulated Raman scattering in a high-power erbium-doped fiber amplifier. , 1995, Optics letters.

[19]  M. Dennis,et al.  Intracavity dispersion measurement in modelocked fibre laser , 1993 .

[20]  T. Pfeiffer,et al.  Chromatic dispersion of erbium-doped silica fibres , 1992 .

[21]  Hermann A. Haus,et al.  Pulse dynamics in stretched‐pulse fiber lasers , 1995 .

[22]  Hermann A. Haus,et al.  Squeezing of pulses in a nonlinear interferometer , 1990 .

[23]  Hermann A. Haus,et al.  Additive pulse mode locking , 1989, Annual Meeting Optical Society of America.

[24]  E. Ippen,et al.  Femtosecond fiber laser pulses amplified by a KCl:Tl+ color-center amplifier for continuum generation in the 1.5-microm region. , 1996, Optics Letters.

[25]  Simon Fleming,et al.  Measurement and analysis of pump-dependent refractive index and dispersion effects in erbium-doped fiber amplifiers , 1996 .

[26]  Mark J. W. Rodwell,et al.  Subpicosecond laser timing stabilization , 1988 .

[27]  W. Knox.  In situ measurement of complete intracavity dispersion in an operating Ti:sapphire femtosecond laser. , 1992, Optics letters.

[28]  James G. Fujimoto,et al.  Analytic theory of additive pulse and Kerr lens mode locking , 1992 .

[29]  Shu Namiki,et al.  Relaxation oscillation behavior in polarization additive pulse mode‐locked fiber ring lasers , 1996 .

[30]  H. Haus,et al.  Random walk of coherently amplified solitons in optical fiber transmission. , 1986, Optics letters.

[31]  M. S. Heutmaker,et al.  Timing jitter and pump-induced amplitude modulation in the colliding-pulse mode-locked (CPM) laser , 1991 .

[32]  H. Haus,et al.  Noise of the stretched pulse fiber laser. I. Theory , 1997 .

[33]  G. Nykolak,et al.  Performance of a high concentration Er/sup 3+/-doped alumino silicate fiber amplifier , 1996, IEEE Photonics Technology Letters.

[34]  J. Gordon.  Dispersive perturbations of solitons of the nonlinear Schrödinger equation , 1992 .

[35]  J. Taylor,et al.  Source of spectral and temporal instability in soliton fiber lasers. , 1992, Optics letters.

[36]  Hermann A. Haus,et al.  Additive-pulse modelocking in fiber lasers , 1994 .

[37]  Mark J. W. Rodwell,et al.  Noise characterization of femtosecond fiber Raman soliton lasers , 1989, Annual Meeting Optical Society of America.

[38]  M. H. Ober,et al.  Mode locking with cross-phase and self-phase modulation. , 1991, Optics letters.

[39]  Irl N. Duling,et al.  Experimental study of sideband generation in femtosecond fiber lasers , 1994 .

[40]  J. Fujimoto,et al.  Structures for additive pulse mode locking , 1991 .

[41]  D. Linde.  Characterization of the noise in continuously operating mode-locked lasers , 1986 .

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

[43]  H. Haus,et al.  Squeezing in fibers with optical pulses. , 1991, Optics letters.

[44]  D. W. Crust,et al.  Reduction of phase noise in passively mode-locked lasers , 1992 .

[45]  M N Islam,et al.  Synchronization of two passively mode-locked erbium-doped fiber lasers by an acousto-optic modulator and grating scheme. , 1996, Optics letters.