Squeezing in traveling-wave second-harmonic generation

Ruo Ding Li, Prem Kumar

Research output: Contribution to journalArticlepeer-review

29 Scopus citations


We have analyzed squeezing of the fundamental field by means of traveling-wave, type-II phase-matched, second-harmonic generation, taking into account depletion of the fundamental field and phase mismatch between the fundamental and the harmonic fields. For the phase-matched case we show that the generated squeezing is S = 1 − γ, where γ is the harmonic conversion efficiency. In the case of a large phase-mismatch we have identified a new mechanism that generates squeezing. It is the nonlinear phase shift of the fundamental field that is due to the cascaded χ(2) nonlinearity.

Original languageEnglish (US)
Pages (from-to)1961-1963
Number of pages3
JournalOptics Letters
Issue number22
StatePublished - Nov 15 1993

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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