Open AccessMulti-pulse time delay integration method for flexible 3D super-resolution range-gated imaging
Author(s) -
Xinwei Wang,
Youfu Li,
Yan Zhou
Publication year - 2015
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.23.007820
Subject(s) - optics , laser , pulse (music) , range (aeronautics) , convolution (computer science) , femtosecond pulse shaping , materials science , intensity (physics) , pulse width modulation , temporal resolution , ultrashort pulse , computer science , physics , artificial intelligence , voltage , quantum mechanics , detector , artificial neural network , composite material
Constructing flexible regular-shaped range-intensity profiles by the convolution of illuminator laser pulse and sensor gate pulse is crucial for 3D super-resolution range-gated imaging. However, ns-scale rectangular-shaped laser pulse with tunable pulse width is difficult to be obtained, especially for pulsed solid-stated lasers. In this paper we propose a multi-pulse time delay integration (MPTDI) method to reshape range-intensity profiles (RIP) free from the above limitation of pulsed lasers. An equivalent laser pulse temporal shaping model is established to evaluate and optimize the MPTDI method. By using MPTDI, the RIP shape and depth of viewing can both be flexibly changed as desired. Here typical triangular and trapezoidal RIPs are established for 3D imaging under triangular and trapezoidal range-intensity correlation algorithms. In addition, a prototype experiment is demonstrated to prove the feasibility of MPTDI.