Abstract

We have developed a stable, reliable source of continuous-wave squeezed vacuum at 1064 nm, using a subthreshold monolithic lithium niobate optical parametric oscillator. Quantum-noise reduction below the vacuum noise level in a bandwidth of 30 MHz with a maximum of 5.5 ± 0.2 dB at 2 MHz is demonstrated. The reconstruction of the Wigner function of a continuous-wave, strongly squeezed-vacuum state is obtained.

© 1995 Optical Society of America

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