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What limits the intensity noise?

April 26, 2017intensity limits noise

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What limits the intensity noise?

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The intensity noise of our ECDLs is directly related to the current noise in the laser-diode drive current. In constant-current mode, the intensity noise of the laser output is limited by the current noise of the drive electronics. Our low-noise controllers make our systems among the quietest ECDLs available at <0.1% RIN. In stable-power mode, the current noise is necessarily increased by the feedback mechanism. This results in small increases in both short-term intensity noise and linewidth.