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

doi:10.1364/OE.21.017760

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

Electrical Engineering

Research output: Contribution to journal › Article › peer-review

59 Scopus citations

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 language	English (US)
Pages (from-to)	17760-17768
Number of pages	9
Journal	Optics Express
Volume	21
Issue number	15
DOIs	https://doi.org/10.1364/OE.21.017760
State	Published - Jul 29 2013

All Science Journal Classification (ASJC) codes

Atomic and Molecular Physics, and Optics

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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.",

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AU - Hoffman, Robert C.

AU - Mott, Andrew G.

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

Abstract

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