TY - JOUR
T1 - Residual amplitude modulation in laser electro-optic phase modulation
AU - Whittaker, Edward A.
AU - Gehrtz, Manfred
AU - Bjorklund, Gary C.
PY - 1985/8
Y1 - 1985/8
N2 - An important practical limitation to the sensitivity of frequency-modulation spectroscopy arises because of imperfect phase modulation of the laser beam. This imperfection manifests itself as residual amplitude modulation (RAM), and we present data from a careful series of experiments designed to elucidate its origin. Experimentally, we find two components to the RAM, one that depends for its intensity on the laser frequency and one that does not. We present a model that correctly accounts for the intensity and rf phase and frequency behavior of the laser- frequency-dependent component. We are unable to offer a plausible explanation for the laser-frequency-independent component.
AB - An important practical limitation to the sensitivity of frequency-modulation spectroscopy arises because of imperfect phase modulation of the laser beam. This imperfection manifests itself as residual amplitude modulation (RAM), and we present data from a careful series of experiments designed to elucidate its origin. Experimentally, we find two components to the RAM, one that depends for its intensity on the laser frequency and one that does not. We present a model that correctly accounts for the intensity and rf phase and frequency behavior of the laser- frequency-dependent component. We are unable to offer a plausible explanation for the laser-frequency-independent component.
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U2 - 10.1364/JOSAB.2.001320
DO - 10.1364/JOSAB.2.001320
M3 - Article
AN - SCOPUS:0001368531
SN - 0740-3224
VL - 2
SP - 1320
EP - 1326
JO - Journal of the Optical Society of America B: Optical Physics
JF - Journal of the Optical Society of America B: Optical Physics
IS - 8
ER -