Investigation of adaptive laser pulse shaping by direct estimation of group delay profile

Yang, Dan; Sprünken, Daan P.; Rhijn, A.C.W. van; Savolainen, Janne; Chen, Ting Lee; Offerhaus, Herman L.; Herek, Jennifer Lynn; Jafarpour, Aliakbar

doi:10.1016/j.optcom.2011.02.075

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Broadband Phase Shaped Cars and Srs1

Effect Of Noise1

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Cited by 2 publications

(2 citation statements)

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“…We have used an evolutionary optimization routine to fi nd these optimal phase shapes , Yang et al 2011. To avoid ending up with a fully non-resonant optimization we do not use the absolute signal strength as a measure of the fi tness.…”

Section: Broadband Phase Shaped Cars and Srsmentioning

confidence: 99%

Phase aspects of (broadband) stimulated Raman scattering

Offerhaus

Garbacik

Rhijn

et al. 2012

Reviews in Analytical Chemistry

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Section: Broadband Phase Shaped Cars and Srsmentioning

confidence: 99%

Phase aspects of (broadband) stimulated Raman scattering

Offerhaus

Garbacik

Rhijn

et al. 2012

Reviews in Analytical Chemistry

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“…11 therein). With a given level and type of hardware noise, alternative formulations, such as delay-based pulse shaping, 26 are expected to provide some (software-based) noise robustness and maintain reasonably high contrast ratios.…”

Section: Effect Of Noisementioning

confidence: 99%

Coherent control of vibrational transitions: Discriminating molecules in mixtures

et al. 2011

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Identifying complex molecules often entails detection of multiple vibrational resonances, especially in the case of mixtures. Phase shaping of broadband pump and probe pulses allows for the coherent superposition of several resonances, such that specific molecules can be detected directly and with high selectivity. Our particular implementation of coherent anti-Stokes Raman scattering (CARS) spectroscopy and imaging employs broadband pump and probe fields in combination with a narrowband Stokes field. We describe our approach for combining spectral phase shaping and closed-loop optimization strategies to perform chemically-selective microscopy. To predict the optimal excitation profile we employ evolutionary algorithms that use the vibrational phase responses of five distinct molecules with overlapping resonances and investigate the effect of phase instability on the optimization. We have recently shown that modified polynomials and orthogonal rational functions can give rise to improved contours for CARS fitness landscapes. Now, by considering the landscapes associated with different basis sets, we introduce two figures of merit to quantitatively rank basis functions in terms of their "appropriateness" for modeling nonlinear phase-shaped processes.

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Investigation of adaptive laser pulse shaping by direct estimation of group delay profile

Cited by 2 publications

References 33 publications

Phase aspects of (broadband) stimulated Raman scattering

Phase aspects of (broadband) stimulated Raman scattering

Coherent control of vibrational transitions: Discriminating molecules in mixtures

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