Mueller matrix microscope with a dual continuous rotating compensator setup and digital demodulation

Arteaga, Oriol; Baldrís, Marta; Antó, Joan; Canillas, A.; Pascual, E.; Bertran, Enric

doi:10.1364/ao.53.002236

Cited by 120 publications

(75 citation statements)

References 22 publications

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“…The images are continuously captured by a CMOS camera while two rotating compensators modulate the polarization of light [9,10]. The images are frequency analyzed at the pixel level by digital demodulation as the intensity is detected [3]. The determination of the optical properties keeps the same high lateral resolution of standard microscopy measurements.…”

Section: Technical Modificationsmentioning

confidence: 99%

“…The retardance of the compensators for every wavelength of measurement (that is close to a λ/4 but not perfect) is determined during de calibration process, as it was detailed in Ref. [3]. Fig.1 shows a photo of the modified Zeiss Jenaval polarization microscope.…”

Section: Technical Modificationsmentioning

confidence: 99%

“…Conventional techniques use white light and crossed polarizers which lead to colored interference patterns in the sample image. Recently, we combined methods and techniques developed in the field of polarimetry [1,2] with space resolved measurements to develop a new prototype Mueller matrix microscope [3]. This new instrument uses monochromatic light together with a dual rotating compensator setup to carry out a quantitative analysis of optical anisotropy of the sample in transmission or in reflection (epi-illumination) [3,4].…”

Section: Introductionmentioning

confidence: 99%

“…Recently, we combined methods and techniques developed in the field of polarimetry [1,2] with space resolved measurements to develop a new prototype Mueller matrix microscope [3]. This new instrument uses monochromatic light together with a dual rotating compensator setup to carry out a quantitative analysis of optical anisotropy of the sample in transmission or in reflection (epi-illumination) [3,4]. The dual rotating compensator setup is one of the most popular approaches to measure the complete Mueller matrix, but there several other alternatives discussed in Refs.…”

Section: Introductionmentioning

confidence: 99%

“…The MM microscope is able to measure the magnitude and orientation of linear dichroism and linear birefringence, the circular birefringence, the circular dichroism and to evaluate also the depolarization. This paper reports an upgraded version of our previously described Mueller matrix microscope [3]. Our new setup is based on a commercial polarization microscope that has been modified to do Mueller matrix measurements.…”

Section: Introductionmentioning

confidence: 99%

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Conversion of a polarization microscope into a Mueller matrix microscope. Application to the measurement of textile fibers

Kuntman¹,

Arteaga²,

Roca³

et al. 2015

Opt. Pura Apl.

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Conversión de un microscopio de polarización en un microscopio de matriz de Mueller. Aplicación a la medida de fibras textiles. ABSTRACT:This work reports the conversion of a commercial polarization microscope (Zeiss Jenaval) into an automatized Mueller matrix microscope. A Mueller matrix measurement provides the value of all the optical properties of a specimen (linear dichroism, linear birefringence, circular dichroism etc.) at a specific wavelength. In contrast to traditional polarization microscopes, which use white light and crossed polarizers to generate colored interference patterns that are analyzed by the microscope user and give only semi-quantitative results, here we demonstrate that it is possible to convert a polarization microscope into a Mueller microscope by only adding two motorized rotating compensators into the optical path without altering the optics or other opto-mechanical elements of the microscope. To our knowledge this is the most compact, fast and handy Mueller microscope ever developed. The performance of this new Mueller matrix microscope is illustrated with some birefringence measurements on textile fibers.Key words: microscopy, polarimetry, Mueller matrix, birefringence. RESUMEN:Este trabajo describe la conversión de un microscopio de polarización comercial (Zeiss Jenaval) en un microscopio de matriz de Mueller automatizado. Una medida de la matriz de Mueller proporciona todas las propiedades ópticas de una muestra (dicroísmo lineal, birrefringencia lineal, dicroísmo circular, etc) para una longitud de onda dada. Los microscopios de polarización tradicionales usan luz blanca y polarizadores cruzados para generar un patrón de colores interferencia que debe ser interpretado por el usuario del microscopio y proporciona resultados sólo semi-cuantitativos. En este trabajo demostramos que añadiendo dos compensadores rotatorios actuados por sendos motores es posible convertir un microscopio de polarización en un microscopio de matriz de Mueller sin alterar la óptica u otros elementos opto-mecánicos del microscopio. Creemos que este es el microscopio de matriz de Mueller más compacto, rápido y práctico que se ha desarrollado. El funcionamiento de este microscopio se demuestra con algunas medidas de birrefringencia en fibras textiles.Palabras clave: microscopía, polarimetría, matriz de Mueller, birrefringencia.

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Section: Technical Modificationsmentioning

confidence: 99%

Section: Technical Modificationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Conversion of a polarization microscope into a Mueller matrix microscope. Application to the measurement of textile fibers

Kuntman¹,

Arteaga²,

Roca³

et al. 2015

Opt. Pura Apl.

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Molecular Technology for Chirality Control: From Structure to Circular Polarization

Uchida

Narushima

Yuasa

2019

Molecular Technology

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Controlled Pinning of Conjugated Polymer Spherulites and Its Application in Detectors

Dörling

Sánchez-Díaz

Arteaga

et al. 2017

Advanced Optical Materials

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is of great interest because of their impact on mechanical, and functional properties, including thermal conductivity, [1] charge carrier mobility, [2][3][4][5][6][7] and electrical conductivity. [8,9] In addition, for suitable macroscopic polymer chain arrangements, polarized absorption and emission can be observed. [10] As a consequence, a variety of methods have been developed to manipulate and control the microstructure and the orientation of conjugated polymers. [11] Some of these methods result in spherulites, densely branched, polycrystalline regions of material with spherically, or in 2 dimensions circularly, radiating fibers. [12,13] Because of their circular shape, which contains all possible fiber orientations in the plane, spherulites are an attractive system to probe orientation-dependent electrical and optical properties. Conventional deposition techniques such as spin-and blade-coating usually result in isotropic layers with a random orientation of the crystalline lamellae down to the microscopic scale. This is caused by the immense density of nucleation sites and the resulting uncontrolled growth. Several methods to control the nucleation density have been demonstrated. For example, a careful control of the solvent partial pressure during swelling of an already deposited layer allows redissolving all but a few crystallites, which can then be regrown under controlled conditions to microscopic spherulites. [3,14] Another method, which is experimentally simpler to realize, uses the epitaxial growth of conjugated polymers or small molecules on crystalline 1,3,5-trichlorobenzene (TCB) from the melt, [15] or directly from solution, [16] resulting in larger macroscopic spherulitic structures. In the former, molten TCB acts as solvent for the conjugated system and upon reducing the temperature below the melting point, TCB solidifies, enforcing the epitaxial crystallization of the conjugated system. For the solution process, on the other hand, a given amount of TCB is mixed together with the conjugated component into a carrier solvent such as chlorobenzene (CB). During deposition at room temperature, the wet film dries, increasing the concentration of the solid content in the solution until the solubility limit is reached and the solutes start solidifying. In order to create oriented structures, TCB should crystallize before the polymer or small molecule, which defines a minimum TCB to polymer content (around 4% in volume for a 20 g L −1 P3HT solution in CB). [16] The growth direction of spherulites can be controlled to some extent by patterning the substrate, [17] or by enforcing aThe nucleation of single macroscopic spherulites at desired positions, as well as ordered arrays of multiple spherulites, is demonstrated by combining the use of crystallizable solvents with local control of solvent evaporation during solution deposition. Moreover, the temperature assisted localized frustration of molecular orientation is shown, enabling the fabrication of samples containing both isotropic areas and spherulites....

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Mueller matrix microscope with a dual continuous rotating compensator setup and digital demodulation

Cited by 120 publications

References 22 publications

Conversion of a polarization microscope into a Mueller matrix microscope. Application to the measurement of textile fibers

Conversion of a polarization microscope into a Mueller matrix microscope. Application to the measurement of textile fibers

Molecular Technology for Chirality Control: From Structure to Circular Polarization

Controlled Pinning of Conjugated Polymer Spherulites and Its Application in Detectors

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