The role of nonlinear optical absorption in narrow-band difference-frequency terahertz-wave generation

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Abstract

We present a general analysis of the influence of nonlinear optical absorption on terahertz generation via optical difference frequency generation, when reaching for the quantum conversion efficiency limit. By casting the equations governing the process in a suitably normalized form, including either two-photon- or three-photon-absorption terms, we have been able to plot universal charts for phase matched optical-to-terahertz conversion for different values of the nonlinear absorption coefficients. We apply our analysis to some experiments reported to date, in order to understand to what extent multiphoton absorption could have played a role and also to predict the maximum achievable conversion efficiency at higher peak pump intensities.
Lingua originaleEnglish
pagine (da-a)222-227
Numero di pagine6
RivistaJOURNAL OF THE OPTICAL SOCIETY OF AMERICA. B, OPTICAL PHYSICS
Volume27
Stato di pubblicazionePublished - 2010

All Science Journal Classification (ASJC) codes

  • Statistical and Nonlinear Physics
  • Atomic and Molecular Physics, and Optics

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