Fig. 9From: Suppression of residual amplitude modulation appeared in commercial electro-optic modulator to improve iodine-frequency-stabilized laser diode using frequency modulation spectroscopyDetected P(33) transition of the Iodine molecules absorption (first-derivative). a Before and b after RAM suppression (with both temperature and DC-offset controls). The background is almost null after RAM suppression. Dashed lines are the average lines for 100 sBack to article page