Characterization of ultrashort electromagnetic pulses

Walmsley, Ian A.; Dorrer, C.

doi:10.1364/aop.1.000308

Cited by 369 publications

(269 citation statements)

References 337 publications

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“…This complex measurement can be achieved using high-speed photodiode which converts a fast optical signal into a fast electric current, fast oscilloscopes to observe the waveform, wide bandwidth spectrum analyzers and other elements. Short pulse characterization using time-frequency map such as frequency-resolved optical gating (FROG) (Trebino, 2000), spectral phase interferometry for direct-field reconstruction (SPIDER) (Dorrer et al, 1999) are well established tools for ultrafast metrology (Walmsley and Dorrer, 2009;Wollenhaupt et al, 2007). Extending these techniques to a single photon time and frequency resolved detection is challenging and may be achieved if combined with on-chip tunable detectors (Gustavsson et al, 2007) or upconversion processes (Gu et al, 2010;Ma et al, 2011).…”

Section: Spectral Diffusionmentioning

confidence: 99%

Nonlinear optical signals and spectroscopy with quantum light

2016

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Conventional nonlinear spectroscopy uses classical light to detect matter properties through the variation of its response with frequencies or time delays. Quantum light opens up new avenues for spectroscopy by utilizing parameters of the quantum state of light as novel control knobs and through the variation of photon statistics by coupling to matter. We present an intuitive diagrammatic approach for calculating ultrafast spectroscopy signals induced by quantum light, focusing on applications involving entangled photons with nonclassical bandwidth properties -known as "time-energy entanglement". Nonlinear optical signals induced by quantized light fields are expressed using time ordered multipoint correlation functions of superoperators in the joint field plus matter phase space. These are distinct from Glauber's photon counting formalism which use normally ordered products of ordinary operators in the field space. One notable advantage for spectroscopy applications is that entangled photon pairs are not subjected to the classical Fourier limitations on the joint temporal and spectral resolution. After a brief survey of properties of entangled photon pairs relevant to their spectroscopic applications, different optical signals, and photon counting setups are discussed and illustrated for simple multi-level model systems.

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Section: Spectral Diffusionmentioning

confidence: 99%

Nonlinear optical signals and spectroscopy with quantum light

2016

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“…The accurate measurement of the amplitude and phase profiles of ultrafast optical signals is critical for a wide range of applications [4], ranging from metrology to coherent optical telecommunications [1][2][3]. Interferometry is broadly used in optics to measure the phase and amplitude of the electric field [4,12].…”

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confidence: 99%

Sub-picosecond phase-sensitive optical pulse characterization on a chip

et al. 2011

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“…Considering that the charge carrier or exciton dynamics in nanomaterials evolves on a very short timescale, typically ranging from tens of femtoseconds to a few nanoseconds [8] , one needs to resort to ultrafast optical means [11][12][13][14] to 'visualize' the dynamic processes of interest. In this respect, time-resolved femtosecond pump-probe spectroscopy has become one of the most extensively adopted techniques since the advent of ultrafast laser systems that produce pulses with femtosecond duration in the early 1990s.…”

Section: Introductionmentioning

confidence: 99%

Probing the ultrafast dynamics in nanomaterial complex systems by femtosecond transient absorption spectroscopy

Zhang

Luo

2016

High Pow Laser Sci Eng

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Over the past decade the integration of ultrafast spectroscopy with nanoscience has greatly propelled the development of nanoscience, as the key information gleaned from the mechanistic studies with the assistance of ultrafast spectroscopy enables a deeper understanding of the structure-function interplay and various interactions involved in the nanosystems. This mini-review presents an overview of the recent advances achieved in our ultrafast spectroscopy laboratory that address the ultrafast dynamics and related mechanisms in several representative nanomaterial complex systems by means of femtosecond time-resolved transient absorption spectroscopy. We attempt to convey instructive, consistent information regarding the important processes, pathways, dynamics, and interactions involved in the nanomaterial complex systems, most of which exhibit excellent performance in photocatalysis.

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Characterization of ultrashort electromagnetic pulses

Cited by 369 publications

References 337 publications

Nonlinear optical signals and spectroscopy with quantum light

Nonlinear optical signals and spectroscopy with quantum light

Sub-picosecond phase-sensitive optical pulse characterization on a chip

Probing the ultrafast dynamics in nanomaterial complex systems by femtosecond transient absorption spectroscopy

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