Measurement of the intensity and phase of ultraweak, ultrashort laser pulses: erratum

Fittinghoff, D. N.; Bowie, Jason; Sweetser, John N.; Jennings, Richard T.; Krumbügel, Marco A.; DeLong, Kenneth W.; Trebino, Rick

doi:10.1364/ol.21.001313

Cited by 13 publications

(3 citation statements)

References 12 publications

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“…Fourier transform spectral interferometry − (FTSI) is a well-developed method for measuring the spectrum and spectral phase of 4WM signals. FTSI relies on spectral interference between the signal field and a reference field (separated in time by several pulse durations), therefore requiring frequency resolution at the detector several times that needed to merely resolve the spectral features in the signal field .…”

mentioning

confidence: 99%

Enhanced-Resolution Single-Shot 2DFT Spectroscopy by Spatial Spectral Interferometry

Spencer

Spokoyny

Harel

2015

J. Phys. Chem. Lett.

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We demonstrate use of spatial interference for the complete electric field reconstruction of two-dimensional (2D) coherent spectroscopic signals generated through four-wave mixing (4WM) in a single laser shot. Until now, the amplitude and phase characterization of 4WM signals has relied primarily on Fourier transform spectral interferometry (FTSI), which limits the measurement's sensitivity and resolution. We show that spatial spectral interferometry (SSI) is a generalized approach to 4WM signal detection that eliminates these inherent limitations of FTSI without introducing additional experimental complexity. SSI is used to measure the 2D photon echo spectra of two systems with dramatically different line widths, the coupled D line transitions in rubidium vapor and the energy-transfer dynamics in the light-harvesting protein LH2.

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mentioning

confidence: 99%

Enhanced-Resolution Single-Shot 2DFT Spectroscopy by Spatial Spectral Interferometry

Spencer

Spokoyny

Harel

2015

J. Phys. Chem. Lett.

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“…At the output both pulses are recombined collinearly in a spectrometer (0.1 nm resolution, Ocean Optics HR2000+ series). The combination of the SHG-FROG, to measure the reference phase, and the spectral interferometry (SI), to retrieve the shaped phase, has been denominated as temporal analysis by dispersing a pair of light electric fields (TADPOLE) [9]. The main advantage of this technique, in addition to its good sensitivity, is that the reference phase needs to be measured just once if we assume that our femtosecond laser system (Coherent MIRA 900) remains stable during the experiment.…”

Section: Methodsmentioning

confidence: 99%

High speed femtosecond pulse characterization based on spectral interferometry

Castro-Olvera¹

2013

Opt. Pura Apl.

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“…Like the FROG (frequency resolved optical gating [14]) and SPIDER (spectral phase interferometry for direct electric-field recovery) [15], the STRUT is a measurement technique that allows recovery of the phase and amplitude of laser pulses. The STRUT signal arises from sum-frequency generation between the shaped pulse and a narrow band reference (derived from spectrally filtering a piece of the pulse).…”

Section: Propagation Of Complex Laser Pulses In Optically Dense Mediamentioning

confidence: 99%

Propagation of Complex Laser Pulses in Optically Dense Media

et al. 1999

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Ultrafast laser pulses with complex envelopes (amplitude and frequency modulated) are used to excite an optically dense column of rubidium vapor. Pulse reshaping, stimulated emission dynamics, and residual electronic excitation in the Rb vapor are all shown to depend strongly on the laser pulse shape. Pulses that produce adiabatic passage in the optically thin limit exhibit more complex behavior in optically thick samples, including an unexpected dependence on the sign of the frequency sweep. Numerical solutions of the Maxwell-Bloch equations are shown to account for our results.[S0031-9007(99)09123-1] PACS numbers: 42.62.Fi, 32.70.Jz, 42.65.Re In recent years, it has become apparent that optical pulse shaping alters excitation dynamics in atomic and molecular systems [1,2]. Some similar effects have been known for decades both in nuclear magnetic resonance and in magnetic resonance imaging, where the technology to tailor radiofrequency pulses has been used routinely for several decades [3]. For the case of laser-matter interactions, however, the combination of optical density and wave packet dynamics also leads to completely new physical phenomena, which are just beginning to be explored as the technology for optical pulse shaping matures [4].Here, we use pulse shaping technology to make complex phase-and amplitude-modulated picosecond laser pulses with sufficient intensity to leave the linear-response regimes, and we apply such pulses to optically dense samples of Rb vapor. In the absence of optical density effects, the pulse shapes we apply [field envelope proportional to sech͑at͒ ͑11mi͒ , or equivalently a sech pulse envelope with a tanh frequency sweep] are predicted to give complete, bandwidth limited inversion [5]. For an optically dense sample, however, we report different dynamics that depend upon the input pulse shape. These results may be of practical importance in preparing spinpolarized noble gases, the only reagents commercially prepared today using laser systems [6].The coupled Maxwell-Bloch (MB) equations describe both the evolution of a material system and the reshaping of the laser pulses as they propagate through an optically dense medium [7]. This system of equations combines Maxwell's wave equation with Bloch's quantum-mechanical description of the field-matter interaction and are writtenHere, E͑ z , t͒ is the electric field, which is a function of three spatial coordinates, represented by the vector z , and of time, g͑D͒ is the inhomogeneous line shape at resonance offset D, p͑ z , t, D 0 ͒ is the polarization, T 2 and T 1 are the coherence and population lifetimes, respectively, and w͑ z , t, D 0 ͒ is the population difference. We used recursive algorithms developed in [8,9] to solve the MB equations numerically.The hyperbolic secant pulse with a hyperbolic tangent frequency sweep (sech) mentioned above is an analytical solution to the Bloch equations [5] and has received a great deal of attention [5,7,8] due to its success at inducing complete bandwidth limited inversions in material sy...

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Measurement of the intensity and phase of ultraweak, ultrashort laser pulses: erratum

Cited by 13 publications

References 12 publications

Enhanced-Resolution Single-Shot 2DFT Spectroscopy by Spatial Spectral Interferometry

Enhanced-Resolution Single-Shot 2DFT Spectroscopy by Spatial Spectral Interferometry

High speed femtosecond pulse characterization based on spectral interferometry

Propagation of Complex Laser Pulses in Optically Dense Media

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