Generation of twin beams from an optical parametric oscillator pumped by a frequency-doubled diode laser.
Quantum-correlated twin beams were generated from a triply resonant optical parametric oscillator with an a-cut KTP crystal pumped by a frequency-doubled diode laser. A total output of 5.1 mW was obtained in the classical-nonclassical light-conversion system driven by a 50-mW diode laser at 1080 nm. A quantum-noise reduction of 4.3 dB (63%) in the intensity difference between the twin beams was successfully observed at the detection frequency of 3 MHz.
Kansai Advanced Research Center, National Institute of Information and Communications Technology, Iwaoka, Iwaka-cho, Nishi-ku, Kobe, Japan. k.hayasaka@osa.org
Kazuhiro
K
Hayasaka
Yun
Y
Zhang
Katsuyuki
K
Kasai