Phase aspects of (broadband) stimulated Raman scattering

Offerhaus, Herman L.; Garbacik, E.T.; Rhijn, A.C.W. van; Fussell, A.L.; Herek, Jennifer Lynn

doi:10.1515/revac.2011.122

Cited by 4 publications

(3 citation statements)

References 29 publications

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“…BD‐RIKE, by the combination of the QE‐QD and QE‐HD modes, allows to reconstruct the full vibrational response, including the vibrational phase. The additional phase information is very powerful, as different components in a mixture might have comparable vibrational amplitude but different vibrational phases at a given frequency. This is the case, for example, when the probe frequency sits in the middle between two resonances: the vibrational responses will have comparable amplitudes but a phase shift by ≈π.…”

Section: Resultsmentioning

confidence: 99%

Raman‐induced Kerr effect microscopy with balanced detection

Molotokaité

Kumar

Manzoni

et al. 2013

J Raman Spectroscopy

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We present a new coherent Raman scattering technique, which we call balanced-detection Raman-induced Kerr effect. The technique relies on a balanced detection architecture, inspired to that applied for electro-optic sampling in the terahertz domain, which allows one to sensitively measure the Raman-induced Kerr effect-induced polarization rotation of the Stokes field. Balanced detection allows for an intrinsic rejection of laser noise, thus making possible to approach shot-noise limited conditions even when using fiber laser sources and relatively low modulation frequencies. Balanced-detection Raman-induced Kerr effect removes both linear and nonlinear background, provides self-heterodyne amplification of the nonlinear Raman signal, and scales linearly the sample concentration. Furthermore, by properly changing the detection conditions, it allows the reconstruction of the full complex vibrational response, both in amplitude and phase, greatly increasing chemical selectivity in single-color excitation

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Section: Resultsmentioning

confidence: 99%

Raman‐induced Kerr effect microscopy with balanced detection

Molotokaité

Kumar

Manzoni

et al. 2013

J Raman Spectroscopy

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“…When the photon energy difference resonates with molecular vibration energy, the radiation field by the imaginary part of the third-order nonlinear polarization interferes destructively with the pump field and constructively with the Stokes field, respectively (Figure 2A). 28 That is, the SRS effect causes intensity modulation of the pump and Stokes beams (Figure 2B). In order to observe the SRS effect, therefore, the intensity of either the pump or Stokes beams is modulated, and the counterpart is lock-in detected.…”

Section: Mesoscale Structural Analysis Based On Stimulated Raman Effectmentioning

confidence: 99%

Theoretical description for nonlinear dynamic light scattering based on stimulated Raman effect (NLDLS‐SRS)

Seto

Kobayashi

Tokunaga

2023

J Raman Spectroscopy

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Dynamic light scattering (DLS) is a method to analyze the diffusion constant and mesostructure of colloidal systems based on refractive index fluctuations. For example, DLS evaluates particle size distribution, particle drift velocity, and the typical length of the cooperative diffusion in gels. However, DLS inherently lacks chemical sensitivity since it detects the spatial Fourier component of the refractive index at the scattering vector (q). This work theoretically demonstrates the feasibility of nonlinear dynamic light scattering (NLDLS) of stimulated Raman effect that reflects molecular vibration. Specifically, we show that by interfering with two pump beams (in the pump‐probe method terminology), it is possible to extract the spatial Fourier component of the imaginary part of the third‐order nonlinear susceptibility. Here, the phase modulation of either of the two beams is effective for mode‐selective detection of the Fourier component. The difference in the wavevectors of these beams corresponds to q in DLS. The result is the same as DLS in mesostructural sensitivity but has a molecular vibration selectivity. The proposed assay in the present paper enables qualitative and chemical‐structure analysis of the colloidal systems without labeling and size differentiation in a mesopic regime.

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“…Spectral tailoring of the excitation pulses in both amplitude and phase to optimally drive the CRS response of one particular compound, while coherently suppressing the response from others, has proven a useful strategy. 49,81,82 This method takes advantage of a single photodetector, which enables data acquisition that is currently many orders of magnitude faster than what can be achieved with array-based detectors. Multifrequency CRS microscopy can, thus, be performed at the high acquisition speeds that have popularized the singlefrequency approach.…”

Section: Spectral Imagingmentioning

confidence: 99%

Biological imaging with coherent Raman scattering microscopy: a tutorial

et al. 2014

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Coherent Raman scattering (CRS) microscopy is gaining acceptance as a valuable addition to the imaging toolset of biological researchers. Optimal use of this label-free imaging technique benefits from a basic understanding of the physical principles and technical merits of the CRS microscope. This tutorial offers qualitative explanations of the principles behind CRS microscopy and provides information about the applicability of this nonlinear optical imaging approach for biological research.

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Phase aspects of (broadband) stimulated Raman scattering

Abstract: The phase of the molecular response can be exploited to improve selectivity without sacrifi cing speed in both narrowband and broadband coherent anti-Stokes Raman scattering (CARS) microscopy, both of which will be considered in this review of the work that was performed in our group.

Cited by 4 publications

References 29 publications

Raman‐induced Kerr effect microscopy with balanced detection

Raman‐induced Kerr effect microscopy with balanced detection

Theoretical description for nonlinear dynamic light scattering based on stimulated Raman effect (NLDLS‐SRS)

Biological imaging with coherent Raman scattering microscopy: a tutorial

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