Dispersive Fourier transformation femtosecond stimulated Raman scattering

Dobner, Sven; Fallnich, Carsten

doi:10.1007/s00340-016-6555-0

Cited by 13 publications

(9 citation statements)

References 23 publications

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“…Recently, Saltarelli et al . and Dobner et al . applied the PTS approach to the detection of broadband SRS spectra.…”

Section: Broadband Srs Techniquesmentioning

confidence: 99%

“…With its unique capability to measure single-shot spectra at high repetition rates, PTS has found application in the detection of rare events, such as optical rogue waves, [229] and in the study of fast dynamical processes, such as the onset of the mode-locking regime from random intracavity power fluctuations. [230] Recently, Saltarelli et al [231] and Dobner et al [232] applied the PTS approach to the detection of broadband SRS spectra. The concept of PTS-SRS is quite simple: a narrowband pump and a broadband Stokes pulse are combined and sent to the sample, the pump is modulated at high frequency and the Stokes spectra after the sample are detected on a single-shot basis by the PTS technique.…”

Section: Photonic Time Stretch Srsmentioning

confidence: 99%

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Broadband Coherent Raman Scattering Microscopy

Polli

Kumar

Valensise

et al. 2018

Laser & Photonics Reviews

113

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Spontaneous Raman (SR) microscopy allows label-free chemically specific imaging based on the vibrational response of molecules; however, due to the low Raman scattering cross section, it is intrinsically slow. Coherent Raman scattering (CRS) techniques, by coherently exciting all the vibrational oscillators in the focal volume, increase signal levels by several orders of magnitude. In its single-frequency version, CRS microscopy has reached very high imaging speeds, up to the video rate; however, it provides an information which is not sufficient to distinguish spectrally overlapped chemical species within complex heterogeneous systems, such as cells and tissues. Broadband CRS combines the acquisition speed of CRS with the information content of SR, but it is technically very demanding. This paper reviews the current state of the art in broadband CRS microscopy, both in the coherent anti-Stokes Raman scattering (CARS) and the stimulated Raman scattering (SRS) versions. Different technical solutions for broadband CARS and SRS, working both in the frequency and in the time domains, are compared and their merits and drawbacks assessed.2

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“…Recently, Saltarelli et al . and Dobner et al . applied the PTS approach to the detection of broadband SRS spectra.…”

Section: Broadband Srs Techniquesmentioning

confidence: 99%

Section: Photonic Time Stretch Srsmentioning

confidence: 99%

Broadband Coherent Raman Scattering Microscopy

Polli

Kumar

Valensise

et al. 2018

Laser & Photonics Reviews

113

View full text Add to dashboard Cite

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“…Dobner and Fallnich recently demonstrated dispersive Fourier transformation FSRS as a method to overcome the inherent time limitations of common spectrometers used in FSRS experiments. 109 Dispersive Fourier transformation is a method used to acquire a spectrum of one laser pulse by temporally dispersing the signal, thereby allowing each frequency component to be resolved by a single fast photodiode. 110 Their method allowed the collection of one Raman spectrum in 2 μs with 20 averages achieving SNR comparable with a CCD reading.…”

Section: Additional Directions For Fsrs Data Acquisitionmentioning

confidence: 99%

Mastering Femtosecond Stimulated Raman Spectroscopy: A Practical Guide

Lynch,

Das,

Alam

et al. 2023

ACS Phys. Chem Au

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Femtosecond stimulated Raman spectroscopy (FSRS) is a powerful nonlinear spectroscopic technique that probes changes in molecular and material structure with high temporal and spectral resolution. With proper spectral interpretation, this is equivalent to mapping out reactive pathways on highly anharmonic excited-state potential energy surfaces with femtosecond to picosecond time resolution. FSRS has been used to examine structural dynamics in a wide range of samples, including photoactive proteins, photovoltaic materials, plasmonic nanostructures, polymers, and a range of others, with experiments performed in multiple groups around the world. As the FSRS technique grows in popularity and is increasingly implemented in user facilities, there is a need for a widespread understanding of the methodology and best practices. In this review, we present a practical guide to FSRS, including discussions of instrumentation, as well as data acquisition and analysis. First, we describe common methods of generating the three pulses required for FSRS: the probe, Raman pump, and actinic pump, including a discussion of the parameters to consider when selecting a beam generation method. We then outline approaches for effective and efficient FSRS data acquisition. We discuss common data analysis techniques for FSRS, as well as more advanced analyses aimed at extracting small signals on a large background. We conclude with a discussion of some of the new directions for FSRS research, including spectromicroscopy. Overall, this review provides researchers with a practical handbook for FSRS as a technique with the aim of encouraging many scientists and engineers to use it in their research.

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“…The blonde hair was chosen as the melanin pigments inside the hair are known to show a strong parasitic signal induced by TPA [ 28 ]. The on-resonance SRS image probed at the resonance of the oil at 1625

[ 41 ] ( Fig. 3(a) ) shows a strong resonant signal from the cinnamomum cassia oil as well as a strong signal arising from melanin pigments in the outer regions of the hair.…”

Section: Fm Srs Imagingmentioning

confidence: 99%

Frequency modulation stimulated Raman scattering scheme for real-time background correction with a single light source

Wallmeier¹,

Würthwein²,

Lemberger³

et al. 2022

Biomed. Opt. Express

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A frequency modulation (FM) scheme for stimulated Raman scattering (SRS) is presented with a single fiber-based light source. Pulse-to-pulse wavelength-switching allows real-time subtraction of parasitic signals leaving only the resonant SRS signal with a noise reduction of up to 30 % compared to digital subtraction schemes, leading effectively to a contrast improvement by a factor of up to 8.3. The wide tuning range of the light source from 1500 cm−1 to 3000 cm−1 and the possibility to separately adjust the resonant and the nonresonant wavenumber for every specimen allow to investigate a variety of samples with high contrast and high signal-to-noise ratio, e. g., for medical diagnostics.

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Dispersive Fourier transformation femtosecond stimulated Raman scattering

Cited by 13 publications

References 23 publications

Broadband Coherent Raman Scattering Microscopy

Broadband Coherent Raman Scattering Microscopy

Mastering Femtosecond Stimulated Raman Spectroscopy: A Practical Guide

Frequency modulation stimulated Raman scattering scheme for real-time background correction with a single light source

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