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Multiplexed broadband beam steering system utilizing high speed MEMS mirrors.

Caleb Knoernschild¹, Changsoon Kim, Felix P Lu

¹Fitzpatrick Institute for Photonics, Electrical and Computer Engineering Department, Duke University, Durham, NC 27708, USA. caleb.k@duke.edu

|April 29, 2009

Summary

This study introduces a micro-electromechanical systems (MEMS) beam steering system for high-speed, multi-wavelength laser control. The technology enables rapid reconfiguration of multiple laser beams, ideal for fast laser multiplexing applications.

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Area of Science:

Optoelectronics
Micro-electromechanical systems (MEMS)
Photonics

Background:

Traditional beam steering systems face limitations in speed and wavelength flexibility.
The demand for rapid manipulation of multiple optical beams across various wavelengths is increasing in scientific and industrial applications.

Purpose of the Study:

To develop and demonstrate a high-speed beam steering system utilizing MEMS technology.
To achieve simultaneous steering of multiple laser beams over a broad wavelength range.

Main Methods:

Implementation of high-speed micromirrors with broadband metallic coatings.
Demonstration of independent beam reconfiguration on a 5x5 array.
Utilizing optical system simulations to assess scalability.

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Main Results:

Successful reconfiguration of two independent laser beams at 780 nm and 635 nm.
Achieved a settling time of 4 microseconds for beam steering.
Demonstrated simultaneous steering of multiple beams across a wide wavelength range.

Conclusions:

The developed MEMS beam steering system offers high speed and broad wavelength flexibility.
The system is a versatile tool for applications requiring fast laser multiplexing.
Simulations indicate the system's scalability for future advancements.