Abstract

We investigate the intensity noise induced by pump-power fluctuations in a diode-pumped single-frequency codoped Tm–Ho:YAG laser and we measure, in the frequency domain, the corresponding transfer function. Good agreement between the measured transfer functions and the theoretical prediction is found. A relative intensity-noise level of -110 dB/Hz from 1 kHz to the relaxation-oscillation frequency, with complete suppression of the relaxation-oscillation peak, is achieved by use of a suitable optoelectronic feedback circuit.

© 2000 Optical Society of America

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