High spectral resolution multiplex CARS spectroscopy using chirped pulses

Knutsen, Kelly P.; Johnson, Justin C.; Miller, A.; Petersen, Poul B.; Saykally, Richard J.

doi:10.1016/j.cplett.2004.02.049

Cited by 91 publications

(56 citation statements)

References 17 publications

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“…We note that our approach here is similar to that reported in Ref. [29]. However, the latter differs from ours as we used the chirped Stokes pulse whilst the chirped pulse was used as the pump and the probe in Ref.…”

Section: Two-colour Cars: Without Dispersion Compensationmentioning

confidence: 45%

“…However, the latter differs from ours as we used the chirped Stokes pulse whilst the chirped pulse was used as the pump and the probe in Ref. [29]. Although the use of chirped Stokes pulse means that the CARS spectra never get multiplexed for a given delay in a strict sense, the effect of the delay on the Stokes wavelengths can be made negligible across the bandwidth required for obtaining a single resonance spectrum.…”

Section: Two-colour Cars: Without Dispersion Compensationmentioning

confidence: 96%

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Two‐beam multiplexed CARS based on a broadband oscillator

Furusawa

Hayazawa

Kawata

2010

J Raman Spectroscopy

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A two-beam multiplexed coherent anti-Stokes Raman scattering (CARS) microscopy setup is demonstrated by using a broadband (BB) Ti : sapphire oscillator without using any specialty fibres. A well-defined spectral structure of the source leads to a delaysensitive CARS measurement in two-colour CARS and also provides an efficient means of obtaining three-colour CARS signals combined with the dispersion compensation of the BB pulse. Our result implies that the background suppression is limited by the onset of the spurious signals caused by the different CARS process, qualitatively differing from what is typically observed in the CARS microscopy.

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Section: Two-colour Cars: Without Dispersion Compensationmentioning

confidence: 45%

Section: Two-colour Cars: Without Dispersion Compensationmentioning

confidence: 96%

Two‐beam multiplexed CARS based on a broadband oscillator

Furusawa

Hayazawa

Kawata

2010

J Raman Spectroscopy

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“…21 Saykally et al have recently reported a method of using a compressor and an OPS to produce chirped pulses to detect Raman modes with 5 cm −1 resolution. 22 In their latest efforts, Silberberg et al have recently devised a CARS experiment using just one chirped pulse from which three photons were used to drive the nonlinear process. 23 In their experiment, a spatial light modulator ͑SLM͒ was employed, which is usually used to generate a series of short pulses.…”

Section: Introductionmentioning

confidence: 99%

Coherent anti-Stokes Raman scattering microscopy with spectrally tailored ultrafast pulses

Porter

Fang

Guo

2005

Review of Scientific Instruments

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We report a coherenti-Stokes Raman scattering (CARS) microscopy method using tailored ultrafast pulses from a broadband chirped-pulse-amplification Ti: Sapphire laser. Three input waves were obtained at the pulse compressing stage. An air-spaced etalon was used to generate the narrow band waves (2ω1), and a hard aperture mask was used to produce the broadband wave (ω2). Spectral resolution as high as 7cm−1 can be achieved with the etalon, and the temporal resolution was ∼1 picosecond. Two-dimensional (2D) time-resolved vibrational CARS spectrographs covering 820–1500cm−1 were obtained from opaque and transparent thin films.

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“…To avoid introducing foreign substances into biological tissues, exogenous properties such as Ramanactive vibrations can be used. Coherent anti-Stokes Raman Scattering (CARS) microscopy [16][17][18][19][20][21][22][23] scans a tightly focused beam through tissue to produce a nonlinear Raman effect in a confined region. Incoherently detected CARS is unable to distinguish between photons emitted at various points inside the focal region, so the focal region must be small to achieve high resolution.…”

Section: Introductionmentioning

confidence: 99%