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Kovacs effect enhanced broadband large field of view electro-optic modulators in nanodisordered KTN crystals

  • Yun Ching Chang
  • , Chao Wang
  • , Shizhuo Yin
  • , Robert C. Hoffman
  • , Andrew G. Mott

Research output: Contribution to journalArticlepeer-review

Abstract

The unique physical effect-Kovacs effect is explored to enhance the performance of EO modulators by employing the non-thermal equilibrium state nanodisordered KTN crystals created by super-cooling process, which can have a significant 3.5 fold increase in quadratic electro-optic coefficient. This enables to reduce the switching half wave voltage (almost by half) so that a broadband (~GHz range) and large field of view (+/-30 deg) electro-optic modulator can be realized with much lowered driving power, which can be very useful for a variety of applications: laser Q-switches, laser pulse shaping, high speed optical shutters and modulating retro reflectors.

Original languageEnglish (US)
Pages (from-to)17760-17768
Number of pages9
JournalOptics Express
Volume21
Issue number15
DOIs
StatePublished - Jul 29 2013

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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