The principle of pump noise suppression is applied to a Nd:YVO4 microchip l
aser, optically pumped by laser diodes. The noise of the microchip laser at
low frequency (below the relaxation oscillation frequency) is compared for
noisy and amplitude squeezed laser diodes. The minimum intensity noise of
the microchip laser is 7 dB above SNL at a frequency of 40 kHz. Very good a
greement between experimental results and theoretical predictions of a mode
l based on quantum Langevin equations is found.