Effects of Dispersion and Focusing on the Production of Optical Harmonics

Maker, P. D.; Terhune, R. W.; Nisenoff, M.; Savage, C. M.

doi:10.1103/physrevlett.8.21

Cited by 1,206 publications

(469 citation statements)

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“…In particular the quadratic power dependence of KDP UV-output on the pump laser input power was checked carefully. In our experiments normalization against the UV-signal of a KDP crystal was more reliable than the usual procedure of normalization against the peak of a Maker fringe pattern [15]. From fig.…”

Section: Resultsmentioning

confidence: 89%

Double-resonant second harmonic generation from surface coverages of nile-blue A

Marowsky

Gierulski

Dick

1985

Optics Communications

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Second harmonic emission from a dye covered quartz surface has been observed in total internal reflection. Coverages with the dye nile-blue A yielded an increase in second harmonic output by several orders of magnitude as compared to coverages with rhodamine 6G. In the latter case only the harmonic light is at resonance with the S o-s 2 transition of the adsorbed dye molecules, whereas for nile-blue A both, the fundamental and the harmonic frequency, are at resonance with the respective singlet transitions.

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Section: Resultsmentioning

confidence: 89%

Double-resonant second harmonic generation from surface coverages of nile-blue A

Marowsky

Gierulski

Dick

1985

Optics Communications

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“…At the single-atom level, the modulation has been attributed to the QPI between the short and long paths due to their different intensity-dependent dipole phases [32]. While on the macroscopic aspect, the transient phase matching due to the variation of ∆k with time can also lead to oscillation of HHG yield, which is also called temporal Marker fringes [33,45,46]. To disentangle these two physical mechanisms, we perform the simulations of harmonic emission based on both the single-atom and macroscopic phase-matching responses.…”

Section: Fig 7: (Color Online)mentioning

confidence: 99%

Spectrally resolved spatiotemporal features of quantum paths in high-order-harmonic generation

Lan

Zhang

et al. 2015

Phys. Rev. A

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We experimentally disentangle the contributions of different quantum paths in high-order harmonic generation (HHG) from the spectrally and spatially resolved harmonic spectra. By adjusting the laser intensity and focusing position, we simultaneously observe the spectrum splitting, frequency shift and intensity-dependent modulation of harmonic yields both for the short and long paths. Based on the simulations, we discriminate the physical mechanisms of the intensity-dependent modulation of HHG due to the quantum path interference and macroscopic interference effects. Moreover, it is shown that the atomic dipole phases of different quantum paths are encoded in the frequency shift. In turn, it enables us to retrieve the atomic dipole phases and the temporal chirps of different quantum paths from the measured harmonic spectra. This result gives an informative mapping of spatiotemporal and spectral features of quantum paths in HHG.

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“…Since its inception in the early 1960s the study of nonlinear frequency conversion has focused on improving the efficiency of the process in transparent materials [1][2][3][4][5][6]. Nonlinear conversion rates depend on factors such as phase and group velocity mismatch, and peak pump intensity.…”

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confidence: 99%

Inhibition of Linear Absorption in Opaque Materials Using Phase-Locked Harmonic Generation

et al. 2008

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We theoretically predict and experimentally demonstrate inhibition of linear absorption for phase and group velocity mismatched second and third harmonic generation in strongly absorbing materials, GaAs in particular, at frequencies above the absorption edge. A 100-fs pump pulse tuned to 1300nm generates 650nm and 435nm second and third harmonic pulses that propagate across a 450μm-thick GaAs substrate without being absorbed. We attribute this to a phaselocking mechanism that causes the pump to trap the harmonics and to impress them with its dispersive properties.

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Effects of Dispersion and Focusing on the Production of Optical Harmonics

Abstract: Recently Franken et al. ' demonstrated the gen-

Cited by 1,206 publications

References 1 publication

Double-resonant second harmonic generation from surface coverages of nile-blue A

Double-resonant second harmonic generation from surface coverages of nile-blue A

Spectrally resolved spatiotemporal features of quantum paths in high-order-harmonic generation

Inhibition of Linear Absorption in Opaque Materials Using Phase-Locked Harmonic Generation

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