Fig. 8From: Suppression of residual amplitude modulation appeared in commercial electro-optic modulator to improve iodine-frequency-stabilized laser diode using frequency modulation spectroscopyRAM signals before and after suppression. a, c Modulation signals that drive EOM amplifier and raw RAM signals detected by APD4; b, d fast Fourier transform (FFT) amplitudes of the raw RAM signals; a, b Before suppression; c, d After suppressionBack to article page