Real-time imaging of kinetics of 180° domains in ferroelectric LiTaO3 crystals for integrated optics

Venkatraman Gopalan, Terence E. Mitchell, Kurt E. Sickatus

Research output: Contribution to conferencePaper

Abstract

A real-time video of nucleating and growing 180° domains at room temperature in ferroelectric LiTaO3 crystals under an external electric field was recorded using nondestructive polarized light microscopy technique. The kinetics of the first reversal of a virgin crystal was studied. The switching time, sideways wall velocity and nucleation rate of 180° domains all show an exponential behavior. It is also shown that point defects play a critical role in the switching kinetics of 180° domains in LiTaO3. Hence, chemically patterning the crystal composition provides the best means of microengineering ferroelectric 180° domains in LiTaO3 for integrated optical applications such as electrooptical scanners, lenses, and quasi-phase matched frequency doublers.

Original languageEnglish (US)
Number of pages1
StatePublished - Jan 1 1998
EventProceedings of the 1998 Conference on Lasers and Electro-Optics, CLEO - San Francisco, CA, USA
Duration: May 3 1998May 8 1998

Other

OtherProceedings of the 1998 Conference on Lasers and Electro-Optics, CLEO
CitySan Francisco, CA, USA
Period5/3/985/8/98

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering
  • Electrical and Electronic Engineering

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    Gopalan, V., Mitchell, T. E., & Sickatus, K. E. (1998). Real-time imaging of kinetics of 180° domains in ferroelectric LiTaO3 crystals for integrated optics. Paper presented at Proceedings of the 1998 Conference on Lasers and Electro-Optics, CLEO, San Francisco, CA, USA, .