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We report the active frequency stabilization of a diode-pumped microchip Nd:YAG laser using a frequency-modulation sideband locking technique. The novel aspect of this scheme is that the piezo-mounted output coupler acts as both the frequency modulator and the frequency-correcting element. When the laser is locked to a reference cavity of 300-MHz free spectral range and 5-MHz linewidth, the laser frequency stability is found to be 88 kHz relative to the cavity.
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Zhou et al. (1991) studied this question.
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