10-Ghz Ultralow-Noise Optical Sampling Stream From A Semiconductor Diode Ring Laser
Active modelocking; Optical analog-to-digital conversion; Semiconductor optical amplifiers; Timing jitter
In this letter, we report, what is to our knowledge, the lowest-noise pulsetrain produced to date with an actively mode-locked external-cavity semiconductor diode laser. Operating characteristics at 10 GHz include dispersion-compensated pulsewidths as short as 1.2 ps, amplitude noise as low as 0.12% rms, and residual phase noise as low as 43-fs rms. Potential application of such a laser in a next-generation optical analog-to-digital converter would theoretically provide as much as 8.6 b of resolution, while sampling a 5-GHz waveform at the Nyquist frequency.
IEEE Photonics Technology Letters
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DePriest, C. M.; Braun, A.; and Abeles, J. H., "10-Ghz Ultralow-Noise Optical Sampling Stream From A Semiconductor Diode Ring Laser" (2001). Scopus Export 2000s. 167.