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

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 en...

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Bibliographic Details
Published inOptics express Vol. 21; no. 15; pp. 17760 - 17768
Main Authors Chang, Yun-Ching, Wang, Chao, Yin, Shizhuo, Hoffman, Robert C, Mott, Andrew G
Format Journal Article
LanguageEnglish
Published United States 29.07.2013
Subjects
Computer Simulation
Computer-Aided Design
Equipment Design
Equipment Failure Analysis
Lasers
Lenses
Light
Micro-Electrical-Mechanical Systems - instrumentation
Models, Theoretical
Refractometry - instrumentation
Scattering, Radiation
Surface Plasmon Resonance - instrumentation
Telecommunications - instrumentation
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Summary: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.
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ISSN:1094-4087
1094-4087
DOI:10.1364/oe.21.017760