Abstract

We present a method of relaxing the conditions of mask design in single-shot phase imaging with a coded aperture (SPICA), for extending the applications of SPICA. SPICA, based on compressive sensing, enables the acquisition of wide, high-resolution optical complex fields in a single exposure without the need for reference light. In our previous work on SPICA, a coded aperture (CA) was implemented with only amplitude modulation, resulting in a low transmission factor and low light efficiency because of the need for an independent phase retrieval process in the reconstruction. We attempt to alleviate these limitations by adapting a reconstruction algorithm to directly associate the phase-retrieval process with a sparsity-based reconstruction. With this approach, it is possible to realize SPICA with an amplitude-modulation-based CA having a high transmission factor, a phase-modulation-based CA, and a complex-amplitude (amplitude and phase)-modulation-based CA. We verified the effectiveness of these relaxed CA designs numerically and experimentally.

© 2016 Optical Society of America

Multidimensional object acquisition by single-shot phase imaging with a coded aperture

Ryoichi Horisaki and Jun Tanida
Opt. Express 23(8) 9696-9704 (2015)

Experimental demonstration of single-shot phase imaging with a coded aperture

Ryoichi Horisaki, Riki Egami, and Jun Tanida
Opt. Express 23(22) 28691-28697 (2015)

Single-shot phase imaging with randomized light (SPIRaL)

Ryoichi Horisaki, Riki Egami, and Jun Tanida
Opt. Express 24(4) 3765-3773 (2016)

Subpixel reconstruction for single-shot phase imaging with coded diffraction

Ryoichi Horisaki, Taichi Kojima, Kyoji Matsushima, and Jun Tanida
Appl. Opt. 56(27) 7642-7647 (2017)

Single-shot phase imaging with a coded aperture

Ryoichi Horisaki, Yusuke Ogura, Masahiko Aino, and Jun Tanida
Opt. Lett. 39(22) 6466-6469 (2014)