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1-D ELECTRO-OPTIC BEAM STEERING DEVICE.

Wei-Chih Wang¹, Chi Leung Tsui

¹Department of Mechanical Engineering, University of Washington, Seattle, WA, 98195, USA.

Sensors and Actuators. A, Physical

|December 27, 2011

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This study introduces a novel 1D beam steering device using electro-optic prisms, eliminating mechanical parts for improved performance. The device achieves significant beam deflection angles and a narrow collimated beam diameter.

Area of Science:

Optics and Photonics
Materials Science

Background:

Traditional scanning devices face limitations due to mechanical components, including fatigue and low operating frequencies.
There is a need for compact, robust beam steering solutions in various optical applications.

Purpose of the Study:

To design and fabricate a 1D beam steering device utilizing planar electro-optic thermal-plastic prisms and a collimator lens array.
To demonstrate a beam steering solution free from mechanical limitations, offering a small system footprint.

Main Methods:

The device employs planar electro-optic thermal-plastic prisms for beam deflection.
A collimator lens array is integrated to ensure beam quality.
The design eliminates moving parts to enhance reliability and operating frequency.

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Main Results:

A maximum deflection angle of 5.6° was achieved with a single-stage prism.
A cascaded three-stage prism design resulted in a maximum deflection angle of 29.2°.
The integrated lens array produced a collimated beam with a 4µm diameter.

Conclusions:

The proposed electro-optic beam steering device overcomes mechanical limitations of conventional scanners.
The compact and robust design shows potential for advanced optical systems requiring precise beam manipulation.