Open AccessGeneration of femtosecond pulsed quadrature phase squeezed light
Author(s) -
Hongyu Liu,
Chen Li,
Ling Liu,
Ying Miao,
Kui Liu,
Junxiang Zhang,
Jiangrui Gao
Publication year - 2013
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.62.164206
Subject(s) - optical parametric oscillator , femtosecond , potassium titanyl phosphate , optics , squeezed coherent state , laser , materials science , degenerate energy levels , physics , optical parametric amplifier , ultrashort pulse , amplitude , quantum noise , optoelectronics , quantum , optical amplifier , quantum mechanics , coherent states
We demonstrate experimentally the short pulse amplitude squeezed light from a singly resonant synchronously pumped optical parametric oscillator (SPOPO). The SPOPO operates in the frequency degenerate case and below threshold, with using a periodically poled potassium titanyl phosphate crystal. The pump laser is the second harmonic of a ultrashort mode-locked femtosecond pulse at 850 nm. The reduction of quantum noise of 2.58 dB is obtained experimentally. The squeezing extent is deduced to be 4.48 dB.