Transient absorption microscopy: advances in chemical imaging of photoinduced dynamics

Davydova, Dar’ya; Cadena, Alejandro De la; Akimov, D. A.; Dietzek, Benjamin

doi:10.1002/lpor.201500181

Cited by 74 publications

(65 citation statements)

References 166 publications

(322 reference statements)

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“…Finally, it is worth mentioning a novel ultrafast technique that is based on confocal pump–probe microscopy . This innovative tool combines femtosecond TA spectroscopy with microscopy techniques, obtaining at the same time both high temporary resolution and spatial resolution, even below the diffraction limitation . With respect to the conventional pump–probe approaches, besides time and probe frequency, the information on spatial coordinates can also be achieved.…”

Section: Principle Of Transient Absorption Spectroscopymentioning

confidence: 99%

Dynamics of Strongly Coupled Hybrid States by Transient Absorption Spectroscopy

Wang

Sun

et al. 2018

Adv Funct Materials

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Since the birth of quantum mechanics the construction and control of novel hybrid quantum states are among the dream targets of scientists. In this regard, due to recent technological advances, hybrid states based on strong coupling occurring between light and matter have become a laboratory reality. For example, it is demonstrated that strong coupling involving microcavities or surface plasmon polaritons shows great potential for novel nanoplasmonic devices such as lasers, all-optical switching, field-effect transistors, and for the evergreen field of quantum computation. Further developments in this field require, however, a better understanding of the underlying mechanisms governing strong coupling, especially from a time-dependent point of view, time-resolved spectroscopy being one of the leading experimental approaches to address this aspect. In this perspective, after a brief introduction of the strong coupling concept, the recent research progress on the dynamics of strongly coupled systems involving J-aggregates, broadly absorptive dyes, semiconductor quantum dots, and perovskite films with either microcavities or surface plasmons polaritons is summarized and discussed. Finally, challenges and perspectives for developing strong coupling concept are further illustrated, with special attention to phonon-photon interaction, as one of the most intriguing topics in condensed matter physics.

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Section: Principle Of Transient Absorption Spectroscopymentioning

confidence: 99%

Dynamics of Strongly Coupled Hybrid States by Transient Absorption Spectroscopy

Wang

Sun

et al. 2018

Adv Funct Materials

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“…The absorption change is a function of delay time, i.e., Δ A (τ). Moreover, if the probe pulse contains a broad spectrum, the absorption change will be a function of wavelength too, i.e., Δ A (τ,λ) . Therefore, the transient absorption microscopy enables the investigation of the excited states in microscopic scale.…”

Section: Imaging Approaches For Static Platformsmentioning

confidence: 99%

Optical Imaging Approaches to Monitor Static and Dynamic Cell‐on‐Chip Platforms: A Tutorial Review

Arandian

Bagheri

Ehtesabi

et al. 2019

Small

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Miniaturized laboratories on chip platforms play an important role in handling life sciences studies. The platforms may contain static or dynamic biological cells. Examples are a fixed medium of an organ‐on‐a‐chip and individual cells moving in a microfluidic channel, respectively. Due to feasibility of control or investigation and ethical implications of live targets, both static and dynamic cell‐on‐chip platforms promise various applications in biology. To extract necessary information from the experiments, the demand for direct monitoring is rapidly increasing. Among different microscopy methods, optical imaging is a straightforward choice. Considering light interaction with biological agents, imaging signals may be generated as a result of scattering or emission effects from a sample. Thus, optical imaging techniques could be categorized into scattering‐based and emission‐based techniques. In this review, various optical imaging approaches used in monitoring static and dynamic platforms are introduced along with their optical systems, advantages, challenges, and applications. This review may help biologists to find a suitable imaging technique for different cell‐on‐chip studies and might also be useful for the people who are going to develop optical imaging systems in life sciences studies.

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“…Pump-probe imaging of transient optical absorption is an emerging field in nonlinear microscopy [24,25]. Recently, this concept has been adopted by photoacoustic imaging for enriching the molecular contrast and refining the spatial resolution.…”

Section: Pump-probe Photoacoustic Imagingmentioning

confidence: 99%

Emerging concepts in functional and molecular photoacoustic imaging

2016

Current Opinion in Chemical Biology

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Providing the specific imaging contrast of optical absorption and excellent spatial scalability across the optical and ultrasonic dimensions, photoacoustic imaging has been rapidly emerging and expanding in the past two decades. In this review, I focus on a few latest advances in this enabling technology that hold the potential to transform in vivo functional and molecular imaging at multiple length scales. Specifically, multi-parametric photoacoustic microscopy enables simultaneous high-resolution mapping of hemoglobin concentration, oxygen saturation and blood flow—opening up the possibility of quantifying the metabolic rate of oxygen at the microscopic level. The pump-probe approach harnesses a variety of photoinduced transient optical absorption as novel contrast mechanisms for high-specificity molecular imaging at depth and as nonlinear excitation strategies for high-resolution volumetric microscopy beyond the conventional limit. Novel magneto-optical and photochromic probes lead to contrast-enhanced molecular photoacoustic imaging through differential detection.

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Transient absorption microscopy: advances in chemical imaging of photoinduced dynamics

Cited by 74 publications

References 166 publications

Dynamics of Strongly Coupled Hybrid States by Transient Absorption Spectroscopy

Dynamics of Strongly Coupled Hybrid States by Transient Absorption Spectroscopy

Optical Imaging Approaches to Monitor Static and Dynamic Cell‐on‐Chip Platforms: A Tutorial Review

Emerging concepts in functional and molecular photoacoustic imaging

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