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A frequency comb is phase-locked to a CW laser with an electro-optic-modulator providing 1.6 MHz feedback bandwidth. Residual phase noise is as low as -94 dBc/Hz, and the comb remained locked under mechanical vibration of up to 1.9 g.
We locked a laser to a cavity using an all-digital Pound-Drever-Hall feedback system. By performing the demodulation and feedback controller digitally the low frequency noise performance was improved compared to a conventional analog system.
We demonstrate a fast control of an octave-spanning fiber-based frequency comb with an intracavity electro-optic modulator. The servo bandwidth of both repetition and carrier-envelope offset frequency is greater than 200 kHz.
We employ a novel dynamical approach to study the slow saturable absorber mode-locking with noise. We obtain explicit expressions for the condition of pulse existence and continuum stability, the pulse power and the minimal pulse width, and present the guidelines for optimal system configuration.
A low noise, frequency stabilized, semiconductor based, 10.287 GHz mode-locked laser with 1000 finesse intracavity etalon is demonstrated with a timing jitter (1 Hz-100 MHz) of 10.9 fs and optical frequency fluctuations less than 150 kHz.
A packaged 10 GHz monolithic two-section quantum-dot mode-locked laser is presented, with record narrow 500 Hz RF electrical linewidth for passive mode-locking. Single sideband noise spectra show 147 fs integrated timing jitter over the 4 MHz-80 MHz frequency range.
Using intracavity active phase modulation, we have verified the theory of Haus and Rana and realized timing jitter reduction from 304 fs to 150 fs integrated to Nyquist frequency on a 10.24 GHz actively mode-locked pulse train.
Intensity noise is characterized at all mode-locking regimes over a wide range of parameters. Onset of noise outburst is reported beyond a threshold pump power. Moderate-power operation is preferable for seeding amplifiers for minimum-noise operation.
We present a new approach to active mode-locking (AML) that predicts, under certain conditions, pulse ldquocondensationrdquo, analogous to BEC. In the condensate state, the first AML eigenmode is dominant over all other modes.
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