Simultaneous amplitude modulation and wavelength conversion in a monolithic periodically-poled lithium niobate

Y. C. Huang, K. W. Chang, A. C. Chiang, T. C. Lin, B. C. Wong, Y. H. Chen

Research output: Contribution to journalConference articlepeer-review


We report simultaneous frequency conversion and amplitude modulation in an optical second harmonic generator by electro-optically controlling the relative phase between the 1064-nm fundamental and the 532-nm second harmonic fields in a dispersion crystal section between two periodically poled lithium niobate (PPLN) sections. Theoretical derivation and experimental demonstration were carried out for two novel crystal configurations, including a linear cascaded configuration in which a 1-cm dispersion section is sandwiched between two 2-cm PPLN sections, and a folding-crystal configuration in which the mixing waves traverse twice in a 2-cm PPLN section through total internal reflections in a 1.5 cm dispersion section. Due to the coherence enhancement in the constructive phase between the two SHG fields in the two PPLN sections, we measured a 30% increase in conversion efficiency compared to a continuous 4-cm PPLN under the same condition. The measured half-wave voltage for the amplitude modulation is 1.1 volt × d(μm) / ld (cm), where d is the separation of the electrodes and ld is the length of the electrodes.

Original languageEnglish
Pages (from-to)1-8
Number of pages8
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - 2002
EventNonlinear Materials: Growth, Characterization, Devices, and Applications - San Jose, CA, United States
Duration: 21 Jan 200221 Jan 2002


  • Amplitude modulation
  • PPLN


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