Complex-amplitude single-pixel imaging using coherent structured illumination

Abstract

This research presents a coherent structured illumination single-pixel imaging scheme to image objects with complex amplitudes. By utilizing a phase-only spatial light modulator for phase modulation, we can efficiently generate the Hadamard basis structured light and the reference light that interfere with each other to form the coherent structured illumination. Using the 4-step phase-shifting, the spectrum of the object is acquired by detecting the zero-frequency component of the object light with a single-pixel photodetector. The desired complex-amplitude image can be further retrieved by applying an inverse Hadamard transform. The proposed scheme is experimentally demonstrated by imaging two etched glass objects, a dragonfly wing, and a resolution test chart. Benefiting from the phase modulation, this scheme has a high efficiency, a high imaging quality, a high spatial resolution, and a simple and stable configuration to obtain both the phase and amplitude information of the target object. The proposed scheme provides a promising complex-amplitude imaging modality with single-pixel detection. Thus it might find broad applications in optical metrology and biomedical science.

Complex-amplitude Fourier single-pixel imaging via coherent structured illumination

“…Recently, several attempts were made to acquire the complex-amplitude information of objects by using SPI techniques, such as single-pixel diffractive imaging, [27][28][29] single-pixel wavefront sensing, [30][31][32] singlepixel ptychography, [33] single-pixel digital holography, [34][35][36][37][38][39] and single-pixel phase imaging based on common-path interferometry. [40][41][42][43][44][45][46] Benefiting from the advantages of SPI, the complex-amplitude single-pixel imaging is becoming a promising imaging modality in the fields of optical microscopy, [40] optical metrology, [45] and biomedical science. [39] In this paper, we present a novel complex-amplitude Fourier single-pixel imaging (CFSI) method by combining coherent structured illumination [29,35,40,42,45] and common-path interference [40][41][42][43][44][45][46] with a Fourier basis scan.…”

“…[40][41][42][43][44][45][46] Benefiting from the advantages of SPI, the complex-amplitude single-pixel imaging is becoming a promising imaging modality in the fields of optical microscopy, [40] optical metrology, [45] and biomedical science. [39] In this paper, we present a novel complex-amplitude Fourier single-pixel imaging (CFSI) method by combining coherent structured illumination [29,35,40,42,45] and common-path interference [40][41][42][43][44][45][46] with a Fourier basis scan. [47][48][49][50][51] Different from previous CFSI methods [37,42,44] that use the digital micromirror device (DMD) for complex-amplitude modulation, we employ a phase-only liquid-crystal-on-silicon spatial light modulator (LCoS-SLM) for complex-amplitude modulation.…”

Complex-amplitude Fourier single-pixel imaging via coherent structured illumination

“…Single-pixel imaging (SPI), as an emerging imaging technique characterized by using structured illumination and a single-pixel detector, has the potential to overcome the challenge [11]. Thus, several attempts were made to achieve the complex amplitude information of objects by using SPI techniques, such as singlepixel diffractive imaging [12][13][14], single-pixel wavefront sensing [15][16][17], single-pixel ptychography [18], singlepixel digital holography [19][20][21][22][23][24], and single-pixel phase imaging based on common-path interferometry [25][26][27][28][29][30].…”

“…In this letter, we present a novel complex-amplitude Fourier single-pixel imaging (CFSI) method by combining coherent structured illumination [14,20,25,27,29] and common-path interference [25][26][27][28][29][30] with Fourier basis scan [31][32][33][34]. Different from previous CFSI methods [22,27,28] that use the digital micromirror device based on the super-pixel method for complex-amplitude modulation, we employ a phase-only spatial light modulator to generate both the structured light and the reference light to form the coherent structured illumination.…”