3 dB squeezing by single-pass parametric amplification in a periodically poled KTiOPO4 crystal |
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| Authors: | Hirano T Kotani K Ishibashi T Okude S Kuwamoto T |
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| Affiliation: | Department of Physics, Gokushuin University, Toshima-ku, Tokyo 171-8588, Japan. Takuya.Hirano@gakushuin.ac.jp |
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| Abstract: | We present the experimental observation of pulsed squeezed light from a degenerate optical parametric amplifier pumped by a second harmonic of a continuous-wave mode-locked Nd:YVO4 laser. With a single pass through a 10 mm long periodically poled KTiOPO4 crystal, the classical parametric gain of 11 is observed. The measured noise reduction in the quiet quadrature is 3.2 dB below the shot-noise level. |
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