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We report lasing wavelength bistability with respect to applied bias on the saturable absorbers in two-section mode-locked quantum dot lasers. We show data from three different devices exhibiting wavelength bistability. All lasers display wavelength bistability. Only one lasing wavelength is present at a time, with all other wavelengths totally quenched. The switchable ranges (the wavelength difference...
We have calculated the quantum-limited lineshape of the comb lines from a mode-locked Ti:sapphire laser using experimentally-derived parameters for the linear response and quantum noise drivers from a generalized soliton perturbation theory. The detailed lineshape has small contributions from relaxation oscillations and frequency pulling. Our results are relevant in determining the fundamental limitation...
We have calculated the spontaneous emission limited lineshape of the comb lines from a mode-locked Ti:sapphire laser using experimentally-derived parameters for the linear response. The lineshape has contributions from the dynamic response of the laser. Our results allow us to determine the fundamental limitation due to spontaneous emission on the uncertainty of frequency measurements using femtosecond...
Pulse shaping theory is extended to include rapid waveform update for line-by-line pulse shaping. The fundamental trade-off between response speed and waveform fidelity is illustrated through simulation.
Measurements of the pulse dynamics in a mode-locked laser show that gain dynamics must be included. The dynamical response of the timing and phase are measured using femtosecond comb techniques, allowing prediction of the width of the comb lines due to noise.
The linear response of a mode-locked laser to a perturbation of the pump power is measured quantitatively. Relaxation oscillations, frequency pulling, and nonlinear changes in the timing and phase of the pulse train are observed.
We report a two-section mode-locked quantum dot laser with an emission wavelength that is bistable with respect to applied reverse bias on the saturable absorber region.
Observations of the response of a mode-locked Ti:sapphire laser to an abrupt change in pump power show that gain dynamics should be included in a complete theory of its response to perturbations.
The linewidth of a mode-locked laser's frequency comb induced by spontaneous emission, or quantum noise, is shown to obey different scaling laws in the linear-dispersionless, i.e., Schawlow-Townes, nonlinear-dispersive, or pure soliton, and intermediate operating regimes.
Two mode-locked femtosecond fiber lasers, connected via a 7 km fiber link, are synchronized to an RMS timing jitter of 19 fs, observed over the entire Nyquist bandwidth (half of the repetition frequency of 100 MHz).
We report the lowest timing jitter and tight optical phase coherence between 1550-nm mode-locked laser sources and an 800-nm femtosecond frequency comb serving as the clockwork for an optical atomic clock.
Summary form only given. We examine the connection between wavelength and spatial mode that occurs in Kerr-lens mode-locking (KLM) lasers because self-phase modulation and self-focusing have the same underlying origin. We demonstrate that a laser generating 10-fs pulses exhibits a strong wavelength dependence in its output beam; that is it has a frequency-dependent mode size (FDMS). The measurements...
Summary form only given. In the present paper, we discuss scaling to high output powers without using higher pump powers. This is particularly important for the gain media in the fluoride material system that exhibit low thermal conductivity, and even more so for gain media that exhibit nonradiative processes that decrease power rapidly as temperature rises, such as Cr:LiSrAlF/sub 6/. The recent arrival...
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