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We report on a low-noise diode laser system for coherent precision spectroscopy of individual ro-vibrational molecular states. A 10 fold reduction of frequency-noise of our diode laser with respect to grating stabilized diode lasers is presented.
We investigate the noise characteristics of an ultra-high repetition rate Raman fiber laser mode-locked by dissipative four-wave mixing and demonstrate a significant reduction of the number of supermodes by incorporating a subcavity into the laser.
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