Polarization Sensitive Optical Imaging and Characterization of Soybean Using Stokes-Mueller Matrix Model

Firdous, S.

doi:10.5772/22705

Cited by 6 publications

(5 citation statements)

References 37 publications

(31 reference statements)

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“…In our previous study, we demonstrated that the significant information or image contrast about biomaterials can be obtained through the polarization sensitive optical imaging technique [27][28][29][30][31]. The Mueller matrices of the biomaterial from the 400-800 nm wavelength of light were obtained experimentally and corresponding optical polarization measured parameters were simulated at different wavelengths for forward and reverse decomposition.…”

Section: Resultsmentioning

confidence: 99%

Optical diagnostic of breast cancer using Raman, polarimetric and fluorescence spectroscopy

Anwar¹,

Firdous²,

Rehman³

et al. 2015

Laser Phys. Lett.

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We presented the optical diagnostic of normal and cancerous human breast tissues using Raman, polarimetric and fluorescence spectroscopic techniques. Breast cancer is the second leading cause of cancer death among women worldwide. Optical diagnostics of cancer offered early intervention and the greatest chance of cure. Spectroscopic data were collected from freshly excised surgical specimens of normal tissues with Raman bands at 800, 1171 and 1530 cm −1 arising mainly by lipids, nucleic acids, proteins, carbohydrates and amino acids. For breast cancer, Raman bands are observed at 1070, 1211, 1495, 1583 and 1650 cm −1 . Results demonstrate that the spectra of normal tissue are dominated by lipids and amino acids. Polarization decomposition of the Mueller matrix and confocal microscopic fluorescence provides detailed description of cancerous tissue and distinguishes between the normal and malignant one. Based on these findings, we successfully differentiate normal and malignant breast tissues at an early stage of disease. There is a need to develop a new tool for noninvasive, real-time diagnosis of tissue abnormalities and a test procedure for detecting breast cancer at an early stage.

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Section: Resultsmentioning

confidence: 99%

Optical diagnostic of breast cancer using Raman, polarimetric and fluorescence spectroscopy

Anwar¹,

Firdous²,

Rehman³

et al. 2015

Laser Phys. Lett.

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“…To perform accurate polarimetry, all the issues necessary for careful and accurate radiometry must be considered together with many additional polarization issues. Mueller matrix polarimetry yields four optical parameters, namely depolarization coefficient, linear retardance, optical activity, and diattenuation, which can be used to characterize the tissues or turbid media [22][23][24][25][26][27][28][29][30][31][32][33][34]. We represented very interesting results from the dengueinfected whole blood by exploiting the depolarization nature of polarized light in whole blood; this can be used for the discrimination between the healthy and viral infection diseased blood samples [5].…”

Section: Mueller Matrix Polarimetrymentioning

confidence: 99%

Optical Diagnostic of Dengue Virus Infected Human Blood using Raman, Polarimetric and Fluorescence Spectroscopy

Firdous¹,

Anwar²

2017

Dengue - Immunopathology and Control Strategies

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In this chapter, we present the optical diagnosis of normal and dengue viral-infected human blood using Raman, Polarimetric, Transmission, and Fluorescence Spectroscopic techniques. The possibility of using light in diagnosis and treating illness has been known for thousands of years. The properties of light and lasers provided many modern applications at home, in industry, and in the field of medicine. Laser use in the field of medicine is large and steadily growing. This growth is based on the versatility of laser light. Efficient and accurate diagnosis of dengue is of primary importance for clinical care. A range of laboratory diagnostic methods has been developed to support patient management and disease control. The choice of diagnostic method depends on the purpose for which the testing is done, the type of laboratory facilities and technical expertise available, costs, and the time of sample collection. The dengue viral infection is mostly diagnosed through laboratory tests; these tests include detection of the virus, virus antigen, anti-dengue virus antibody, complement fixation test, neutralization tests, and detection of virus nucleic acid. As dengue infection most rapidly increases in different regions, early diagnostic confirmation of dengue infection in patients allows for timely clinical intervention, etiological investigation, and disease control. Hence, diagnosis of dengue disease during the acute phase should be a priority and is a public health concern. Lasers and optics have many applications in medical sciences; diagnosis and treatment of diseases with lasers and light are latest and noninvasive techniques. Development of light-based apparatus has evolved into tools for improved diagnosis and treatment modalities in medical sciences. The methods of the laser spectroscopy make it possible to obtain direct information regarding the structure and dynamics of the functional groups of biomolecules. Development of new light sources, optics, and diode laser of different wavelengths makes them attractive for spectroscopy of biological molecules. In our study, more than 600 dengue viral-infected blood or blood sera samples and 25 non-dengue healthy blood samples were analyzed using four different optical methodologies. In the first study, Raman spectrum peaks for normal samples observed at 1527, 1170, and 1021 cm −1 show the presence of different biological materials, including lipids, carbohydrates, skeletal CC stretch of acyl chains, and

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“…In this work, we experimentally demonstrate a spatially addressable polarimetric characterization of a reflective-type LC-SLM (Holoeye, LC-R720) using the Mueller-Stokes polarimetric technique. Conventional MMI techniques require 49 intensity images [27] or 36 intensity images [19] at different SOPs of light. These techniques might be suitable for the characterization of samples where only one set of measurement is sufficient, but these are time-consuming for the cases where one needs to take multiple sets of intensity images for detailed characterization of a sample.…”

Section: Introductionmentioning

confidence: 99%

Spatially Addressable Polarimetric Calibration of Reflective-Type Spatial Light Modulator Using Mueller–Stokes Polarimetry

2021

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Mueller–Stokes polarimetry is emerging as a prominent noninvasive imaging technique to study the structural characteristics of an anisotropic medium. Spatial light modulator (SLM) is a programmable liquid crystal device (LCD), which is used to modulate the amplitude, phase, and polarization of light. The compact design and cumbrous manufacturing process of SLM requires its polarimetric calibration prior to its utilization for various applications. In this study, we experimentally demonstrate Mueller–Stokes imaging of a reflective-type SLM (Holoeye, LCR-720) to calibrate its polarization modulation characteristics with respect to its dynamic gray value range (0–255) at different spatial locations of SLM screen. Mueller matrices at 18 different gray values of SLM at an interval of 15, that is, at gray values 0, 15, 30, up to 255 have been experimentally measured using an improvised Mueller matrix imaging polarimeter (MMIP). Crucial polarimetric characteristics, that is, diattenuation, polarizance, state of polarization (SOP), depolarization, and retardance have been estimated with respect to the gray value range of SLM. Significant polarization modulation characteristics [diattenuation (0.08–0.3), polarizance (0.02–0.2), and retardance (0 to π)] have been determined for the SLM. These results indicate that the SLM exhibits spatially variable depolarizing nature and hence it is not perfectly homogeneous in structure. Therefore, it is expected that the outcomes of this study would be helpful for exploring the applicability of Mueller–Stokes polarimetry in advancement of LC technology.

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Polarization Sensitive Optical Imaging and Characterization of Soybean Using Stokes-Mueller Matrix Model

Cited by 6 publications

References 37 publications

Optical diagnostic of breast cancer using Raman, polarimetric and fluorescence spectroscopy

Optical diagnostic of breast cancer using Raman, polarimetric and fluorescence spectroscopy

Optical Diagnostic of Dengue Virus Infected Human Blood using Raman, Polarimetric and Fluorescence Spectroscopy

Spatially Addressable Polarimetric Calibration of Reflective-Type Spatial Light Modulator Using Mueller–Stokes Polarimetry

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