Experimental Study on the Imaging of the Squeezed State Light with - 4.93dB Quantum-noise Reduction at 1064 nm

摘要

A stable amplitude squeezed state light was generated by utilizing the optical parametric down-conversion (OPDC) technique based on periodically poled KTiOPO_4(PPKTP) in an optical parametric oscillator (OPO) resonator. We observed a -4.93dB of squeezing in homodyne measurement. The imaging experiments of resolution target were conducted. It shown that the imaging resolution with squeezed state light as light source was 1.26 times that of the resolution with coherent light as light source. The squeezed state light was applied for imaging of real objects and we found that the imaging with squeezed light as light source is more distinct and has less distortion.