Excitation profiles of the coherent anti-Stokes resonance Raman spectrum of β-carotene

Carreira, L. A.; Maguire, T. C.; Malloy, Thomas B.

doi:10.1063/1.434261

Cited by 80 publications

(12 citation statements)

References 18 publications

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“…Therefore, considerable effort has been devoted to biophysical studies of such systems [12][13][14][15]. An intriguing contribution is the work of Carreira et al on the EP of the coherent anti-Stokes resonance Raman spectrum of beta-carotene [16]. A time-resolved resonance Raman (TR3) approach was successfully used in a number of works on excited-state characterization of beta-carotene [17,18] and lycopene [19].…”

Section: Carotenoidsmentioning

confidence: 98%

Achievements in resonance Raman spectroscopy

Efremov

Ariese

Gooijer

2008

Analytica Chimica Acta

249

102

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Section: Carotenoidsmentioning

confidence: 98%

Achievements in resonance Raman spectroscopy

Efremov

Ariese

Gooijer

2008

Analytica Chimica Acta

249

102

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“…Hence the interest in using the electronic resonance enhancement of the CARS susceptibility, from which gains of 10' to 108 should follow for the detectivity. Resonance CARS has been studied [6,7] and then observed, first in liquids, then in gases [8][9][10][11][12][13]. In gases, resonanceenhanced CARS is extremely difficult to observe.…”

Section: Introduction -Coherent Anti-stokes Ramanmentioning

confidence: 99%

Resonance-enhanced coherent anti-Stokes Raman scattering in C2

Attal

Débarre

Müller‐Dethlefs

et al. 1983

Rev. Phys. Appl. (Paris)

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2014 Des spectres de Diffusion Raman Anti-Stokes Cohérente (DRASC) à la résonance électronique ont été obtenus sur le radical C2 formé dans une décharge microonde et dans une flamme de chalumeau oxy-acétylénique. La résonance électronique a été obtenue en accordant les lasers dans le système de Swan. Des spectres d'émission de C2 sur la bande de Swan avaient au préalable été enregistrés par spectroscopie à transformée de Fourier et interprétés; ceci a permis de déterminer les conditions optimales d'enregistrement des spectres DRASC, puis d'interpréter ces derniers sans ambiguïté. Des simulations numériques ont été calculées; ces simulations prennent en compte l'effet des populations des états vibrationnels supérieurs et de l'élargissement Doppler; elles sont en bon accord avec les spectres expérimentaux. Les densités de C2 observées sont voisines de 5 x 1011 cm-3 dans la décharge et 1013 cm-3 dans la flamme. Le seuil de détection est 1010 cm-3 avec notre instrument. Abstract 2014 We have obtained resonance-enhanced Coherent Anti-Stokes Raman Scattering (CARS) spectra of the C2 radical formed in a microwave discharge and in an acetylene welding torch. Electronic resonance enhancement was obtained in the Swan system. In order to prepare this work, Swan band emission spectra of C2 had been recorded and assigned using Fourier-transform spectroscopy; this enabled us to determine the optimal conditions for the CARS spectroscopy and to assign the CARS spectra unambiguously. Numerical simulations were performed, with due account for the effects of upper vibrational state populations and for Doppler broadening; the agreement with experimental spectra is fair. We deduce from the spectra C2 densities of about 5 x 1011 cm-3 in the discharge and 1013 cm-3 in the flame. The detection sensitivity is of the order of 1010 cm-3 for our system.

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“…An observation of anti-Stokes coherent scattering from some biological molecules has been reported (Nitsh and Kifer, 1977;Carriera et al, 1977Carriera et al, , 1978. The extremely high sensitivity of the method was seen in studies of carotene, which allowed an observation of carotene concentrations as low as 10-8 M.…”

Section: (4)mentioning

confidence: 98%

Laser Applications in Medicine and Biology

Wolbarsht¹

1989

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A Continuation Order Plan is available for this series. A continuation order will bring delivery of each new volume immediately upon publication. Volumes are billed only upon actual shipment.v PREFACE The diversity of the chapters presented in this volume illustrates not only the many applications of lasers, but also the fact that, in many cases, these are not new uses of lasers, but rather improvements of laser techniques already widely accepted in both research and clinical situations. Biological reactions to some special aspects of laser exposure continue to show new effects, which have implications for the ever-present topic of laser safety. Such biological reactions are included in fields of research which depend on properties of electromagnetic radiation exposure only possible with lasers, for example, the short pulses necessary for the temperature-jump experiments reviewed by Reiss:Speciality lasers, such as the transverse excitation atmospheric (TEA) or excimer lasers, add new wavelengths and pulse domains to those already available for biological application. A description of these new types of lasers by Osgood is included to indicate new possibilities for future use and to avoid limiting our coverage to well-developed present-day applications.Hillenkamp and Kaufmann describe a microprobe mass spectrograph for analysis of the minute amounts of material evaporated by a laser pulse. The analytical possibilities of this instrument are far-reaching, and some of the various results are described to illustrate the power of their method, as well as to show the types of problems that are suitable for it.The initial steps in photosynthesis have become the subject of intensive investigation. High-speed laser techniques have assisted in unlocking some of the puzzles of the energy transduction involved, and the present review by Rubin shows both the current state of the art and the possibilities for future experiments.Much of the clinical work using lasers remains in ophthalmology, the first specialty to accept any type of laser exposure as a standard therapy. In addition to its use in the treatment of an ever-increasing number of retinal vii viii Preface problems, laser coagulation has become the standard treatment for glaucoma, for the lens capsule cutting necessitated by the complications of lens implant surgery, and bids fair to proceed even further as lasers are applied to vitreous surgery. The analyses of bioeffects of laser exposures in the eye by Ham and Mueller, and by Allen and Pohlhamus, give some of the scientific background for those applications that have already proven successful and indicate the bases for future clinical applications of lasers in oph thalmology.Each clinical acceptance of a laser instrument broadens the experience of all in the general medical field with regard to laser use. Also, the increasingly larger number of clinicians involved in research on laser surgery adds even more to the diversity of laboratory projects that will in turn become the basis for techniques that in the future...

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Excitation profiles of the coherent anti-Stokes resonance Raman spectrum of β-carotene

Cited by 80 publications

References 18 publications

Achievements in resonance Raman spectroscopy

Achievements in resonance Raman spectroscopy

Resonance-enhanced coherent anti-Stokes Raman scattering in C2

Laser Applications in Medicine and Biology

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