Abstract

Both vacuum-squeezed and bright amplitude-squeezed states of light are experimentally generated from a frequency doubler with a semimonolithic Fabry–Perot configuration consisting of a type II nonlinear crystal and a concave mirror. Vacuum squeezing of 3.2±0.1dB and amplitude squeezing of 1.3±0.2dB are obtained simultaneously at a pump power of 8 mW. The two quadrature-squeezed optical fields that are generated are of identical frequency at 1080-nm wavelength and orthogonal polarization. Optimizing the input pump power by 19 mW yields as much as 5.0±0.2dB of maximum vacuum squeezing. The advantages of the system are its simplicity and multiple utility.

© 2005 Optical Society of America

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