Samuel I Zapata-Valencia, Heberley Tobon-Maya, Osamu Matoba, Jesús Lancis, Enrique Tajahuerce
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引用次数: 0
Abstract
In this Letter, a method to achieve quantitative phase imaging (QPI) on Hadamard-based single-pixel microscopy (HSPM) is presented. A motionless implementation of the transport of intensity equation (TIE) supported by a focus-tunable lens (FTL) is reported for HSPM. The presented approach enables the use of digital micromirror devices (DMDs) instead of the typically implemented phase-only modulators utilized in QPI single-pixel imaging (SPI). Photobleaching and phototoxicity are minimized under the proposed approach. A minimal light-sample interaction is guaranteed by the DMDs' achievable frame rates, the structured illumination approach, and the use of high-sensitive photodiodes. The feasibility of this method is validated by imaging a calibrated phase-only USAF test target of different height steps. Additionally, epithelial cheek cells are imaged under low-power conditions, 240 µW, to validate the effectiveness of phase retrieval for biological samples.
期刊介绍：
The Optical Society (OSA) publishes high-quality, peer-reviewed articles in its portfolio of journals, which serve the full breadth of the optics and photonics community.
Optics Letters offers rapid dissemination of new results in all areas of optics with short, original, peer-reviewed communications. Optics Letters covers the latest research in optical science, including optical measurements, optical components and devices, atmospheric optics, biomedical optics, Fourier optics, integrated optics, optical processing, optoelectronics, lasers, nonlinear optics, optical storage and holography, optical coherence, polarization, quantum electronics, ultrafast optical phenomena, photonic crystals, and fiber optics. Criteria used in determining acceptability of contributions include newsworthiness to a substantial part of the optics community and the effect of rapid publication on the research of others. This journal, published twice each month, is where readers look for the latest discoveries in optics.
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