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
G. Breitenbach, T. Müller, S. F. Pereira, J.-Ph. Poizat, S. Schiller, and J. Mlynek, "Squeezed vacuum from a monolithic optical parametric oscillator," J. Opt. Soc. Am. B 12, 2304-2309 (1995)