Open AccessA signal to noise ratio measurement for single shot laser pulses by use of an optical Kerr gate
Author(s) -
Junfang He,
Changjun Zhu,
Yishan Wang,
Guanghua Cheng,
Kuaisheng Zou,
Dengke Wu,
Xudong Xie
Publication year - 2011
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.19.004438
Subject(s) - optics , laser , physics , shot noise , detector , dynamic range , signal (programming language) , grating , optical path , kerr effect , signal to noise ratio (imaging) , pulse (music) , noise (video) , materials science , nonlinear system , quantum mechanics , artificial intelligence , computer science , image (mathematics) , programming language
A new design of signal to noise ratio (SNR) measurement for single shot laser pulses, based on a stepped grating and an optical Kerr gate (OKG), is presented. A single shot laser pulse was simultaneously divided into multi-pulses in both time and space. Intensity-space distribution of laser multi-pulses, which was recorded with a CCD detector, was transformed into intensity-time distribution. Time resolution of 1.95 ps and detection time range of 42.9 ps were obtained, respectively. Moreover, optical spatial localization attenuators were introduced into optical path to acquire wide dynamic range in the SNR measurement and, as a result, the dynamic range has been extended remarkably.