Guided-wave electro-optic beam deflector using domain reversal in LiTaO/sub 3/

Chen, Qibiao; Chiu, Yi; Lambeth, D.N.; Schlesinger, T. E.; Stancil, Daniel D.

doi:10.1109/50.317528

Cited by 50 publications

(3 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To improve the scanning speed of mechanical deflectors, researchers have begun exploring high-speed non-mechanical deflectors. Non-mechanical beam deflectors use the liquid crystal birefringence effect, acousto-optic effect, and electro-optic effect, − among others, to achieve beam deflection by changing the refractive index of transparent media. Non-mechanical beam deflectors can be further categorized into liquid crystal-phased array deflectors, acousto-optical deflectors, electro-optical deflectors, and others.…”

Section: Introductionmentioning

confidence: 99%

Improving the Electro-Optical Deflection Performance of KTN Crystals Based on the Temperature Compensation Effect

Chen,

Zhao,

et al. 2023

Crystal Growth & Design

View full text Add to dashboard Cite

The laser deflector is a crucial device used to change the direction of light beam propagation in various fields, including lithography, lidar, and scanning. In this paper, we conduct a systematic study of two KTa (1−x) Nb x O 3 (KTN) crystals that use different physical deflection mechanisms. We analyze their dielectric properties, entropy, domain structure, and deflection performance. We also address the drawback of the small deflection angle of the compositional gradient KTN deflector crystal by proposing a new temperature-compensated temperature control strategy to improve its deflection performance. The gradient temperature control mechanism maximizes the dielectric constant in different regions of the KTN crystals, leading to a threefold (10.67 mrad) increase in deflection angle compared to conventional uniform temperature control equipment. This optimized temperature control mechanism can significantly enhance the practical application of KTN crystals, providing a new avenue for achieving a large deflection angle beam deflector.

show abstract

Section: Introductionmentioning

confidence: 99%

Improving the Electro-Optical Deflection Performance of KTN Crystals Based on the Temperature Compensation Effect

Chen,

Zhao,

et al. 2023

Crystal Growth & Design

View full text Add to dashboard Cite

show abstract

“…The proposed all-solid-state beam deflection system which use the light beam deflection system to take the place of the mechanism of electron beam deflection system. Through this innovation, we develop the theory of all-optical solid-state scanner engineering design study, in order to be able to break through the bottleneck of traditional electron beam deflection system, realize the deflection to a wide optical spectrum in a small space, instead of the conventional scanner's complicate system [3,4] . This all-optical solid-state scanner puts forward new ideas to the super fast diagnosis technology, which can greatly improve the streak camera and other technical equipment for super fast phenomenon observed performance.…”

Section: Introductionmentioning

confidence: 99%

Research of a New All-Optical Solid-State Scanner Based on GaAs

Fan

et al. 2013

AMR

View full text Add to dashboard Cite

Design an all-optical solid-state scanner chip, which can realize high speed light deflection in a very small space, instead of electron beam deflection scan image converter tube and opto-mechanical scanner, cancel the complicated mechanical components, use the all-optical scanning to realize the super fast phenomenon observation. The beam deflection system is based on semiconductor optical waveguide core layer carrier induced refractive index change effect to realize, its development work is mainly divided into semiconductor optical waveguide and saw prisms two parts. And through the experiment, we measured deflection angle of the scanner chip to 1053nm signal light.

show abstract

“…4 Recently there have been several nonmechanical beam-steering devices developed by different research groups. [5][6][7][8][9][10][11] With its low driving voltage and mature ͑low-cost͒ fabrication technology, liquid-crystal ͑LC͒ technology seems to be an excellent candidate for beam-steering devices. The effort in the development of LC beam deflectors can be traced back to the early 1970's.…”

Section: Introductionmentioning

confidence: 99%