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

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Integrated optics
Ferroelectric materials
Imaging techniques
Crystals
Kinetics
Frequency doublers
Point defects
Light polarization
Optical microscopy
Lenses
Nucleation
Electric fields
Chemical analysis
Temperature

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering
  • Electrical and Electronic Engineering

Cite this

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, .
Gopalan, Venkatraman ; Mitchell, Terence E. ; Sickatus, Kurt E. / 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, .1 p.
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Gopalan, V, Mitchell, TE & Sickatus, KE 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, 5/3/98 - 5/8/98.

Real-time imaging of kinetics of 180° domains in ferroelectric LiTaO3 crystals for integrated optics. / Gopalan, Venkatraman; Mitchell, Terence E.; Sickatus, Kurt E.

1998. Paper presented at Proceedings of the 1998 Conference on Lasers and Electro-Optics, CLEO, San Francisco, CA, USA, .

Research output: Contribution to conferencePaper

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AB - 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.

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