Pulse-duration dependence of the isotopic effect in simple molecular ions driven by strong laser fields

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Abstract

In this paper we discuss isotopic effects in simple molecular ions subjected to strong laser fields. We show that the intensity of the emitted spectra strongly depends upon both the nuclear mass of the molecular ions and the laser pulse duration. In particular, for short pulse duration [up to 8 optical cycles (o.c.)], we confirm the trend described in the most studied case in which the high-order harmonic generation is more efficient for heavierisotopes; in contrast, an interesting physical phenomenon is predicted for pulses longer than 16 o.c. characterized by an inverse effect in which lighter molecular species are responsible for higher-order harmonic emission.
Lingua originaleEnglish
pagine (da-a)053421-1-053421-5
Numero di pagine5
RivistaPHYSICAL REVIEW A
Volume83
Stato di pubblicazionePublished - 2011

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molecular ions
pulse duration
cycles
lasers
harmonic generations
trends
harmonics
pulses

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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title = "Pulse-duration dependence of the isotopic effect in simple molecular ions driven by strong laser fields",
abstract = "In this paper we discuss isotopic effects in simple molecular ions subjected to strong laser fields. We show that the intensity of the emitted spectra strongly depends upon both the nuclear mass of the molecular ions and the laser pulse duration. In particular, for short pulse duration [up to 8 optical cycles (o.c.)], we confirm the trend described in the most studied case in which the high-order harmonic generation is more efficient for heavierisotopes; in contrast, an interesting physical phenomenon is predicted for pulses longer than 16 o.c. characterized by an inverse effect in which lighter molecular species are responsible for higher-order harmonic emission.",
keywords = "Molecular physics, laser-matter interaction, short pulses",
author = "Persico, {Francesco Saverio} and Giuseppe Castiglia and Corso, {Pietro Paolo} and Emilio Fiordilino",
year = "2011",
language = "English",
volume = "83",
pages = "053421--1--053421--5",
journal = "PHYSICAL REVIEW A",
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TY - JOUR

T1 - Pulse-duration dependence of the isotopic effect in simple molecular ions driven by strong laser fields

AU - Persico, Francesco Saverio

AU - Castiglia, Giuseppe

AU - Corso, Pietro Paolo

AU - Fiordilino, Emilio

PY - 2011

Y1 - 2011

N2 - In this paper we discuss isotopic effects in simple molecular ions subjected to strong laser fields. We show that the intensity of the emitted spectra strongly depends upon both the nuclear mass of the molecular ions and the laser pulse duration. In particular, for short pulse duration [up to 8 optical cycles (o.c.)], we confirm the trend described in the most studied case in which the high-order harmonic generation is more efficient for heavierisotopes; in contrast, an interesting physical phenomenon is predicted for pulses longer than 16 o.c. characterized by an inverse effect in which lighter molecular species are responsible for higher-order harmonic emission.

AB - In this paper we discuss isotopic effects in simple molecular ions subjected to strong laser fields. We show that the intensity of the emitted spectra strongly depends upon both the nuclear mass of the molecular ions and the laser pulse duration. In particular, for short pulse duration [up to 8 optical cycles (o.c.)], we confirm the trend described in the most studied case in which the high-order harmonic generation is more efficient for heavierisotopes; in contrast, an interesting physical phenomenon is predicted for pulses longer than 16 o.c. characterized by an inverse effect in which lighter molecular species are responsible for higher-order harmonic emission.

KW - Molecular physics

KW - laser-matter interaction

KW - short pulses

UR - http://hdl.handle.net/10447/56511

M3 - Article

VL - 83

SP - 053421-1-053421-5

JO - PHYSICAL REVIEW A

JF - PHYSICAL REVIEW A

SN - 1050-2947

ER -